Any thunderstorm which produces hail that reaches the ground is known as a hailstorm. Hailstorm is a form of solid precipitation.
Topic: Definition, Causes, Distribution, Impacts, Prevention.
Prepared by Md. Nasim Fardous Zim
https://www.cda.org.bd
An avalanche is a mass of snow sliding down a mountain. There are different types including surface avalanches which involve layers of snow with different properties sliding over each other, and full depth avalanches where the entire snow cover from the ground up slides. Avalanches are caused by various environmental factors including heavy snowfall, steep slopes, vibration, warm temperatures and layers of snow and ice building up. They can damage life, property and infrastructure and cause flash flooding, but are also a natural part of mountain ecosystems. Understanding avalanche patterns and avoiding likely start zones are important for preventing danger.
Hailstorms occur when strong thunderstorm updrafts carry water droplets above the freezing level, where they freeze into hailstones. Hailstones grow larger as additional water freezes onto them until they become too heavy to be supported by the updraft and fall to the ground. Hail has the potential to severely damage crops, plants, buildings, vehicles, and can even cause injury or death. Mitigation efforts include educating people on sheltering safely during hailstorms, issuing warnings, and designing buildings to withstand hail impacts in prone regions.
Cyclones are areas of closed, circular fluid motion rotating in the same direction as the Earth. They are known by different names depending on their location. There are three main types of cyclones: tropical cyclones, polar cyclones, and mesocyclones. Cyclones derive their names through a systematic procedure. They form due to differences in air pressure and temperature. The primary hazards of cyclones are strong winds, heavy rainfall, and storm surge, which can cause flooding and other impacts. Mitigation efforts include securing property, listening for warnings, and evacuating if instructed.
The document discusses thunderstorms and provides safety information. It defines a thunderstorm and explains that they require moisture, unstable air, and lift. Lightning is caused by the buildup of positive and negative charges, while thunder comes from lightning setting off sound waves. The document advises that if thunder roars to go indoors, as being outside is dangerous during a storm. It also provides tips for indoor safety during a thunderstorm and what to do if someone is struck by lightning.
Thunderstorms are storms that produce lightning and thunder. They form from single or clusters of cumulonimbus clouds and can affect small or large areas. There are different types of thunderstorms including air-mass and severe thunderstorms. Thunderstorms go through various stages of development from cumulus to mature to dissipating. Microbursts are strong localized downdrafts under thunderstorms that can cause damage. Lightning forms due to separation of charges within thunderclouds and can be dangerous, so safety precautions should be taken during storms.
This document discusses avalanches and defines them as rapid flows of snow down sloping surfaces that are triggered in starting zones and form gravity currents. It describes how avalanches occur due to factors like temperature differences between snow layers, evaporation of lower layers, and loss of grip. The anatomy of an avalanche includes the starting zone where snow can fracture and slide, the track path down the slope, and the runout zone where snow comes to a stop. Formation involves terrain angle and slope, snowpack structure with weak layers below slabs, and weather conditions like temperature rises or storms. Types include loose snow, slab, powder, and wet snow avalanches. Effects range from positive like habitat to negative like damage and
Thunderstorms are formed by cumulonimbus clouds and are characterized by lightning and thunder. They develop when certain atmospheric conditions are met, such as unstable lapse rates and sufficient water vapor. Thunderstorms can be triggered by different mechanisms like surface heating, frontal lifting, orographic lifting, and convergence. There are different types of thunderstorms including single cell, multicell, and supercells. Thunderstorms pose various hazards to aviation like turbulence, icing, hail, wind shear, lightning, tornadoes, and microbursts. Pilots can detect and avoid thunderstorms using weather radar and visual sighting, and recommended distances of avoidance depend on aircraft altitude.
Floods can occur when heavy rainfall or snowmelt causes river channels or low-lying areas to become submerged. They are the most common natural disaster worldwide and can be exacerbated by human activities like urbanization. Major river basins in India that experience frequent flooding include the Ganga, Brahmaputra, and rivers in peninsular and northwestern regions. Floods can damage property, infrastructure, and agriculture, while also increasing health risks. Mitigation strategies aim to reduce vulnerability through mapping of flood-prone areas, land use controls, engineered structures, and flood management programs.
An avalanche is a mass of snow sliding down a mountain. There are different types including surface avalanches which involve layers of snow with different properties sliding over each other, and full depth avalanches where the entire snow cover from the ground up slides. Avalanches are caused by various environmental factors including heavy snowfall, steep slopes, vibration, warm temperatures and layers of snow and ice building up. They can damage life, property and infrastructure and cause flash flooding, but are also a natural part of mountain ecosystems. Understanding avalanche patterns and avoiding likely start zones are important for preventing danger.
Hailstorms occur when strong thunderstorm updrafts carry water droplets above the freezing level, where they freeze into hailstones. Hailstones grow larger as additional water freezes onto them until they become too heavy to be supported by the updraft and fall to the ground. Hail has the potential to severely damage crops, plants, buildings, vehicles, and can even cause injury or death. Mitigation efforts include educating people on sheltering safely during hailstorms, issuing warnings, and designing buildings to withstand hail impacts in prone regions.
Cyclones are areas of closed, circular fluid motion rotating in the same direction as the Earth. They are known by different names depending on their location. There are three main types of cyclones: tropical cyclones, polar cyclones, and mesocyclones. Cyclones derive their names through a systematic procedure. They form due to differences in air pressure and temperature. The primary hazards of cyclones are strong winds, heavy rainfall, and storm surge, which can cause flooding and other impacts. Mitigation efforts include securing property, listening for warnings, and evacuating if instructed.
The document discusses thunderstorms and provides safety information. It defines a thunderstorm and explains that they require moisture, unstable air, and lift. Lightning is caused by the buildup of positive and negative charges, while thunder comes from lightning setting off sound waves. The document advises that if thunder roars to go indoors, as being outside is dangerous during a storm. It also provides tips for indoor safety during a thunderstorm and what to do if someone is struck by lightning.
Thunderstorms are storms that produce lightning and thunder. They form from single or clusters of cumulonimbus clouds and can affect small or large areas. There are different types of thunderstorms including air-mass and severe thunderstorms. Thunderstorms go through various stages of development from cumulus to mature to dissipating. Microbursts are strong localized downdrafts under thunderstorms that can cause damage. Lightning forms due to separation of charges within thunderclouds and can be dangerous, so safety precautions should be taken during storms.
This document discusses avalanches and defines them as rapid flows of snow down sloping surfaces that are triggered in starting zones and form gravity currents. It describes how avalanches occur due to factors like temperature differences between snow layers, evaporation of lower layers, and loss of grip. The anatomy of an avalanche includes the starting zone where snow can fracture and slide, the track path down the slope, and the runout zone where snow comes to a stop. Formation involves terrain angle and slope, snowpack structure with weak layers below slabs, and weather conditions like temperature rises or storms. Types include loose snow, slab, powder, and wet snow avalanches. Effects range from positive like habitat to negative like damage and
Thunderstorms are formed by cumulonimbus clouds and are characterized by lightning and thunder. They develop when certain atmospheric conditions are met, such as unstable lapse rates and sufficient water vapor. Thunderstorms can be triggered by different mechanisms like surface heating, frontal lifting, orographic lifting, and convergence. There are different types of thunderstorms including single cell, multicell, and supercells. Thunderstorms pose various hazards to aviation like turbulence, icing, hail, wind shear, lightning, tornadoes, and microbursts. Pilots can detect and avoid thunderstorms using weather radar and visual sighting, and recommended distances of avoidance depend on aircraft altitude.
Floods can occur when heavy rainfall or snowmelt causes river channels or low-lying areas to become submerged. They are the most common natural disaster worldwide and can be exacerbated by human activities like urbanization. Major river basins in India that experience frequent flooding include the Ganga, Brahmaputra, and rivers in peninsular and northwestern regions. Floods can damage property, infrastructure, and agriculture, while also increasing health risks. Mitigation strategies aim to reduce vulnerability through mapping of flood-prone areas, land use controls, engineered structures, and flood management programs.
A document tackling about the basis of Thunderstorms:
-What is Thunderstorm?
-How do the Thunderstorms form?
-What is the difference between thunder and lightning?
Between a water spout and a tornado?
-What are the types of Lightning? of a Thunderstorm?
-What are some signs of an approaching thunderstorm?
-What are some precautionary measures to do before and during a thunderstorm?
-Case of Thunderstorms in the Philippines and on Planes
about the formation and causes and impacts of the cyclone formation in the earth. and cyclone formed in the INDIA region whole about the briefly explained about cyclone
Drought is a period of below-average precipitation that results in water shortages. It can last for months or years and significantly impact ecosystems, agriculture, and local economies. Drought is caused by factors like low precipitation, dry seasons, climate change, and human activities like overfarming and deforestation. Some areas that are particularly prone to drought include Ethiopia, Eritrea, and Somalia in the Horn of Africa. Common consequences of drought are reduced crop yields, dust storms, famine, wildlife migration, and conflicts over scarce resources. Drought preparedness plans focus on prediction, monitoring, impact assessment, and response.
Floods are a common natural disaster in India that occur when bodies of water overflow their normal boundaries due to heavy rainfall or snow/ice melt. There are several types of floods including flash floods caused by intense rainfall in mountainous areas, river floods along large rivers, coastal floods due to storm surges and tsunamis, and urban floods when rainfall cannot be absorbed in urban areas. Floods can damage property and infrastructure, spread disease, and disrupt communities but may also provide benefits by recharging groundwater or increasing soil fertility. Prevention methods include coastal defenses, town planning, retaining walls, dams, and increasing vegetation cover. States frequently affected by floods in India include West Bengal, Odisha, Andhra Pradesh,
This document summarizes various coastal hazards. It categorizes hazards as either rapid-onset (e.g. coastal flooding from storm surge or tsunamis) or slow-onset (e.g. coastal erosion, land subsidence, or saltwater intrusion). Rapid-onset hazards are caused by sudden events like earthquakes generating tsunamis or storms producing storm surge, while slow-onset hazards occur gradually over time from erosion, sinking land, or encroaching seawater. The document also discusses how human activities like dams, seawalls, and jetties can disrupt sediment flows and influence coastal changes. Mitigation measures proposed include protective infrastructure, emergency response improvements, and climate information services.
A PowerPoint about storm surges and how it affects the weather. A brief case study about storm surges in the North Sea and Bangladesh are also included.
Snow avalanches occur when layers of snow on steep slopes fail and slide rapidly downhill. They are triggered by natural factors like weather and terrain, but human activity is responsible for triggering 95% of avalanches that bury people. Avalanches can be classified by their type of snow, failure mechanism, size, and other morphological characteristics. Proper safety equipment, terrain selection, and group management are important for avoiding avalanche danger.
Drought is defined as a prolonged period of abnormally low rainfall that negatively impacts living conditions and agriculture. It is difficult to determine the exact onset and end of a drought. Drought can be caused by improper rainfall distribution over time and space, as well as an imbalance between precipitation and water usage. There are different types of drought including meteorological, hydrological, agricultural, and socio-economic droughts that have increasingly severe impacts on weather, water resources, crop yields, and the economy. While drought is a natural phenomenon, its effects are exacerbated in developing countries by issues like overpopulation, deforestation, and unsustainable water usage.
This document discusses tsunamis, which are giant waves caused by earthquakes or volcanic eruptions under the sea. Tsunamis can cause massive damage and loss of life by destroying homes and infrastructure. While impossible to prevent, their effects can be minimized through preparation measures like building in safe areas, establishing evacuation routes, and early warning systems. The document outlines dos and don'ts for before, during, and after a tsunami and emphasizes the importance of quickly evacuating coastal areas if a tsunami is detected or warned.
This document discusses cyclones and provides information about the group members, categories of cyclones based on wind speed, causes and formation of cyclones, effects of cyclones including damage, casualties, crops and infrastructure, preparedness and response, and structural mitigation measures. It notes that the group members are studying cyclones and provides their names and IDs. It also outlines 5 categories of cyclones based on increasing wind speeds and the associated damage levels.
Precipitation occurs when moisture in the atmosphere condenses and falls to the surface. The main types of precipitation are rain, snow, hail, fog, dew, mist, glaze, rime, sleet. Precipitation is measured using rain gauges, snow gauges, radars, and satellites. Rain gauges include non-recording and recording types like tipping bucket, weighing, and float gauges. Recording gauges provide rainfall duration and intensity data in addition to total amounts.
Cyclones are rapidly rotating storm systems that form over warm tropical oceans. They are known as hurricanes in the Atlantic/Northeast Pacific, typhoons in the Northwest Pacific, and tropical cyclones in the South Pacific/Indian Ocean. Cyclones form through the rising of warm, moist air which causes an area of low pressure and draws in surrounding higher pressure air, fueling the storm system through heat release. They can cause extensive damage upon making landfall through strong winds, storm surge, heavy rain, and tornadoes.
The term precipitation is also used to refer all forms of falling moisture viz., rainfall, snowfall, sleet, hail etc. Rainfall occurs in the form of a pattern. Atmospheric Precipitation is a wonderful process for the whole globe to use. This module explains it in general.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over low pressure systems and can exist on scales from mesocyclones to extra tropical cyclones. Cyclones develop in tropical regions like northern Australia and Southeast Asia between the months of summer, requiring sea surface temperatures of at least 26°C. Cyclones are responsible for loss of life and property damage within 100km of their centers, mainly through strong winds, heavy rainfall, storm surges and tornadoes.
The document discusses the Earth's climate system and factors that can cause climate change. It defines climate as the long-term atmospheric conditions of an area, whereas weather refers to short-term conditions. Climate change occurs when factors like greenhouse gases, solar variability, volcanic eruptions, and human activities disrupt the global energy balance. The climate system includes interactions between the atmosphere, oceans, ice sheets, and land that influence heat distribution.
This document discusses tropical cyclones, including their definition, areas affected in India, past cyclones that have impacted India, effects of cyclones, preventative measures, forecasting techniques, warning systems, and a case study on Cyclone Vardah that struck Chennai in 2016. It provides details on tropical cyclones such as their formation from warm moist air rising and condensing, different names used in various regions, and clockwise/counterclockwise wind patterns in each hemisphere. Maps show cyclone-prone zones in India and lists past cyclones with details like lowest pressure and wind speeds. Effects on buildings and infrastructure are described along with preventative construction methods and the Indian cyclone forecasting and warning systems. The
A severe storm struck parts of Bangladesh and eastern India on April 13, 2010 lasting around 90 minutes with winds estimated between 120-160 km/hr. Over 91,000 homes were destroyed in India and thousands more in Bangladesh. The storm caused widespread damage to crops, livestock, trees and infrastructure across both countries. Local governments worked to provide relief in the form of food, cash, and building materials to help rebuild damaged homes and infrastructure.
Fronts occur where two different air masses meet but do not mix. There are four main types of fronts: cold fronts, warm fronts, stationary fronts, and occluded fronts. Cold fronts move quickly and bring cooler, drier air behind them, often causing rain and storms. Warm fronts move more slowly and bring cloudy skies and light rain before warmer, more humid air moves in. Stationary fronts occur when neither air mass can push the other, resulting in prolonged wet weather. Occluded fronts form when a warm air mass gets trapped between two cold fronts.
Drought is an extended period of deficient water supply caused by significantly below average precipitation. It can impact ecosystems, agriculture, and local economies. Some plant species have adaptations like reduced leaves or waxy coatings to tolerate drought. Past droughts in India have led to major famines and tens of millions of deaths in the 18th-20th centuries. Indian agriculture depends heavily on the summer monsoon, and monsoon failures can result in water shortages and below average crop yields in drought-prone regions.
This document discusses various types of weather hazards including hurricanes, tornadoes, thunderstorms, hail, winds, winter weather, droughts, floods, frost, and tropical cyclones. It provides details on the causes and impacts of each hazard, particularly how they affect agriculture through damage to crops, livestock, and infrastructure. Specific historic droughts, floods, and cyclones in India are also outlined that have resulted in widespread deaths and destruction.
Modification of weather hazards: weather modification for agriculture; scient...Abhilash Singh Chauhan
Modification of weather hazards: weather modification for agriculture; scientific
advances in artificial rain making, hail suppression, dissipation of fog and stratus clouds,
modification of severe storms and electric behavior of clouds.
A document tackling about the basis of Thunderstorms:
-What is Thunderstorm?
-How do the Thunderstorms form?
-What is the difference between thunder and lightning?
Between a water spout and a tornado?
-What are the types of Lightning? of a Thunderstorm?
-What are some signs of an approaching thunderstorm?
-What are some precautionary measures to do before and during a thunderstorm?
-Case of Thunderstorms in the Philippines and on Planes
about the formation and causes and impacts of the cyclone formation in the earth. and cyclone formed in the INDIA region whole about the briefly explained about cyclone
Drought is a period of below-average precipitation that results in water shortages. It can last for months or years and significantly impact ecosystems, agriculture, and local economies. Drought is caused by factors like low precipitation, dry seasons, climate change, and human activities like overfarming and deforestation. Some areas that are particularly prone to drought include Ethiopia, Eritrea, and Somalia in the Horn of Africa. Common consequences of drought are reduced crop yields, dust storms, famine, wildlife migration, and conflicts over scarce resources. Drought preparedness plans focus on prediction, monitoring, impact assessment, and response.
Floods are a common natural disaster in India that occur when bodies of water overflow their normal boundaries due to heavy rainfall or snow/ice melt. There are several types of floods including flash floods caused by intense rainfall in mountainous areas, river floods along large rivers, coastal floods due to storm surges and tsunamis, and urban floods when rainfall cannot be absorbed in urban areas. Floods can damage property and infrastructure, spread disease, and disrupt communities but may also provide benefits by recharging groundwater or increasing soil fertility. Prevention methods include coastal defenses, town planning, retaining walls, dams, and increasing vegetation cover. States frequently affected by floods in India include West Bengal, Odisha, Andhra Pradesh,
This document summarizes various coastal hazards. It categorizes hazards as either rapid-onset (e.g. coastal flooding from storm surge or tsunamis) or slow-onset (e.g. coastal erosion, land subsidence, or saltwater intrusion). Rapid-onset hazards are caused by sudden events like earthquakes generating tsunamis or storms producing storm surge, while slow-onset hazards occur gradually over time from erosion, sinking land, or encroaching seawater. The document also discusses how human activities like dams, seawalls, and jetties can disrupt sediment flows and influence coastal changes. Mitigation measures proposed include protective infrastructure, emergency response improvements, and climate information services.
A PowerPoint about storm surges and how it affects the weather. A brief case study about storm surges in the North Sea and Bangladesh are also included.
Snow avalanches occur when layers of snow on steep slopes fail and slide rapidly downhill. They are triggered by natural factors like weather and terrain, but human activity is responsible for triggering 95% of avalanches that bury people. Avalanches can be classified by their type of snow, failure mechanism, size, and other morphological characteristics. Proper safety equipment, terrain selection, and group management are important for avoiding avalanche danger.
Drought is defined as a prolonged period of abnormally low rainfall that negatively impacts living conditions and agriculture. It is difficult to determine the exact onset and end of a drought. Drought can be caused by improper rainfall distribution over time and space, as well as an imbalance between precipitation and water usage. There are different types of drought including meteorological, hydrological, agricultural, and socio-economic droughts that have increasingly severe impacts on weather, water resources, crop yields, and the economy. While drought is a natural phenomenon, its effects are exacerbated in developing countries by issues like overpopulation, deforestation, and unsustainable water usage.
This document discusses tsunamis, which are giant waves caused by earthquakes or volcanic eruptions under the sea. Tsunamis can cause massive damage and loss of life by destroying homes and infrastructure. While impossible to prevent, their effects can be minimized through preparation measures like building in safe areas, establishing evacuation routes, and early warning systems. The document outlines dos and don'ts for before, during, and after a tsunami and emphasizes the importance of quickly evacuating coastal areas if a tsunami is detected or warned.
This document discusses cyclones and provides information about the group members, categories of cyclones based on wind speed, causes and formation of cyclones, effects of cyclones including damage, casualties, crops and infrastructure, preparedness and response, and structural mitigation measures. It notes that the group members are studying cyclones and provides their names and IDs. It also outlines 5 categories of cyclones based on increasing wind speeds and the associated damage levels.
Precipitation occurs when moisture in the atmosphere condenses and falls to the surface. The main types of precipitation are rain, snow, hail, fog, dew, mist, glaze, rime, sleet. Precipitation is measured using rain gauges, snow gauges, radars, and satellites. Rain gauges include non-recording and recording types like tipping bucket, weighing, and float gauges. Recording gauges provide rainfall duration and intensity data in addition to total amounts.
Cyclones are rapidly rotating storm systems that form over warm tropical oceans. They are known as hurricanes in the Atlantic/Northeast Pacific, typhoons in the Northwest Pacific, and tropical cyclones in the South Pacific/Indian Ocean. Cyclones form through the rising of warm, moist air which causes an area of low pressure and draws in surrounding higher pressure air, fueling the storm system through heat release. They can cause extensive damage upon making landfall through strong winds, storm surge, heavy rain, and tornadoes.
The term precipitation is also used to refer all forms of falling moisture viz., rainfall, snowfall, sleet, hail etc. Rainfall occurs in the form of a pattern. Atmospheric Precipitation is a wonderful process for the whole globe to use. This module explains it in general.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over low pressure systems and can exist on scales from mesocyclones to extra tropical cyclones. Cyclones develop in tropical regions like northern Australia and Southeast Asia between the months of summer, requiring sea surface temperatures of at least 26°C. Cyclones are responsible for loss of life and property damage within 100km of their centers, mainly through strong winds, heavy rainfall, storm surges and tornadoes.
The document discusses the Earth's climate system and factors that can cause climate change. It defines climate as the long-term atmospheric conditions of an area, whereas weather refers to short-term conditions. Climate change occurs when factors like greenhouse gases, solar variability, volcanic eruptions, and human activities disrupt the global energy balance. The climate system includes interactions between the atmosphere, oceans, ice sheets, and land that influence heat distribution.
This document discusses tropical cyclones, including their definition, areas affected in India, past cyclones that have impacted India, effects of cyclones, preventative measures, forecasting techniques, warning systems, and a case study on Cyclone Vardah that struck Chennai in 2016. It provides details on tropical cyclones such as their formation from warm moist air rising and condensing, different names used in various regions, and clockwise/counterclockwise wind patterns in each hemisphere. Maps show cyclone-prone zones in India and lists past cyclones with details like lowest pressure and wind speeds. Effects on buildings and infrastructure are described along with preventative construction methods and the Indian cyclone forecasting and warning systems. The
A severe storm struck parts of Bangladesh and eastern India on April 13, 2010 lasting around 90 minutes with winds estimated between 120-160 km/hr. Over 91,000 homes were destroyed in India and thousands more in Bangladesh. The storm caused widespread damage to crops, livestock, trees and infrastructure across both countries. Local governments worked to provide relief in the form of food, cash, and building materials to help rebuild damaged homes and infrastructure.
Fronts occur where two different air masses meet but do not mix. There are four main types of fronts: cold fronts, warm fronts, stationary fronts, and occluded fronts. Cold fronts move quickly and bring cooler, drier air behind them, often causing rain and storms. Warm fronts move more slowly and bring cloudy skies and light rain before warmer, more humid air moves in. Stationary fronts occur when neither air mass can push the other, resulting in prolonged wet weather. Occluded fronts form when a warm air mass gets trapped between two cold fronts.
Drought is an extended period of deficient water supply caused by significantly below average precipitation. It can impact ecosystems, agriculture, and local economies. Some plant species have adaptations like reduced leaves or waxy coatings to tolerate drought. Past droughts in India have led to major famines and tens of millions of deaths in the 18th-20th centuries. Indian agriculture depends heavily on the summer monsoon, and monsoon failures can result in water shortages and below average crop yields in drought-prone regions.
This document discusses various types of weather hazards including hurricanes, tornadoes, thunderstorms, hail, winds, winter weather, droughts, floods, frost, and tropical cyclones. It provides details on the causes and impacts of each hazard, particularly how they affect agriculture through damage to crops, livestock, and infrastructure. Specific historic droughts, floods, and cyclones in India are also outlined that have resulted in widespread deaths and destruction.
Modification of weather hazards: weather modification for agriculture; scient...Abhilash Singh Chauhan
Modification of weather hazards: weather modification for agriculture; scientific
advances in artificial rain making, hail suppression, dissipation of fog and stratus clouds,
modification of severe storms and electric behavior of clouds.
Floods are natural occurrences where an area of land that is normally dry becomes submerged by water. There are different types of floods including river flooding from overflowing streams or rivers, flash flooding caused by heavy sudden rainfall, coastal flooding from storm surges and rising sea levels, urban flooding in cities with poor drainage, and sewer flooding from blocked drains. To protect from floods, it is important to avoid building in floodplains, construct barriers to stop floodwater, and listen to warnings to evacuate. Major floods that have impacted India include the 2005 Mumbai floods that killed over 1,000 people and the 2018 Kerala floods that killed over 400.
flash_ during disaster flood situation lojke floodflooding.pptSomu Somu
Flash floods are the #1 weather-related killer in the United States. They can occur rapidly within 6 hours of rainfall in normally dry areas with no visible streams. Flash floods are caused by intense rainfall overwhelming the soil's ability to absorb water, which causes rapid runoff that can sweep away cars, buildings and trees. To stay safe, people should head for higher ground immediately if flash flooding is warned and never attempt to cross flooded roads.
This document discusses flooding and flood management. It begins with an abstract and then defines flooding, describing the main causes as heavy rain, river overflow, strong winds, dam breaks, and snow/ice melt. It outlines three main types of floods: flash floods, rapid onset floods, and slow onset floods. The effects of flooding are outlined as economic impacts, environmental impacts, and impacts to people and animals. The document provides guidance on actions to take before, during, and after floods and describes various flood prevention methods. It then presents a case study on the severe flooding that occurred in Chennai, India in 2015 when the city received over 290mm of rain in one day.
Weather is the condition of the Earth’s atmosphere at a certain place and time.
The elements of weather:
Temperature
Humidity
Precipitation
Air
Pressure
Wind
Visibility
Hail forms in cumulonimbus clouds as rain drops rise and freeze into ice pellets. These pellets grow larger as they are lifted up and down in the clouds, freezing more water onto their surfaces. Large hailstones can fall with great force and cause damage to crops, buildings, vehicles and even livestock. While forecasts can provide some warning, hailstorms are difficult to predict and protective measures like covering crops may help reduce losses when hail threatens. Hail poses a danger and causes harm through its physical impacts during storms.
Storms occur when a low pressure system develops surrounded by high pressure areas, creating strong winds and storm clouds. There are 13 main types of storms including thunderstorms, blizzards, hail storms, and tornadoes. While storms can have negative impacts through flooding, fires, and wind damage, they also benefit the environment by watering plants, burying carbon in oceans, and allowing for faster plant growth.
Cyclones are areas of closed, circular winds rotating clockwise in the Southern Hemisphere and counterclockwise in the Northern Hemisphere around centers of low atmospheric pressure. They form over warm ocean waters and rely on favorable wind patterns, gaining energy from the ocean. Cyclones can cause heavy rain, strong winds, storm surges, and tornadoes, resulting in impacts like flooding, erosion, mudslides and damage to lives and property. The 1999 Odisha cyclone was the strongest ever recorded in the North Indian Ocean with winds of 160 mph, killing about 10,000 people in India.
Cyclones are areas of closed, circular winds rotating in the same direction as the Earth. They form over warm ocean waters and rely on favorable wind patterns. The main effects of cyclones include heavy rain, strong winds, storm surges, and tornadoes. Their intensity and location determine the level of destruction. Tornadoes are violently rotating columns of air that extend from the ground to a thunderstorm cloud. They can reach over 300 mph but usually last only a few minutes on the ground. The 1999 Odisha cyclone was the strongest ever recorded in the North Indian Ocean, with winds of 160 mph at its peak. It caused over 10,000 deaths and catastrophic damage in India.
Severe weather such as thunderstorms, tornadoes, hurricanes, and blizzards can endanger people and cause property damage. Thunderstorms produce heavy rain, lightning, thunder, and sometimes hail. Tornadoes are violent whirling winds that can destroy buildings. Hurricanes are powerful storms that form over warm oceans and can demolish structures. Blizzards occur in winter when winds blow heavy snow, reducing visibility. It is important to take safety precautions like sheltering indoors during storms and listening for watches and warnings.
The document discusses various types of natural disasters including earthquakes, droughts, cyclones, and global warming. It provides information on what each type of disaster is, their effects, and protective measures that can be taken. For earthquakes, it notes they result from sudden energy release in the Earth's crust and can seriously damage buildings. Protective measures for earthquakes include earthquake-proof construction and taking shelter. Drought is defined as a prolonged period of below average rainfall, and protective measures involve using water efficiently and collecting rainwater. Cyclones are large rotating air masses that cause heavy rainfall and damage infrastructure, and shelters or reinforced housing can help protect from them. Global warming is caused by greenhouse gases and is raising temperatures,
This document provides information about different types of natural disasters including earthquakes, floods, volcanic eruptions, cyclones, and tornados. Pictures are included to illustrate each type of disaster. It discusses the causes and impacts of each disaster type, such as building collapse, fires, and damage to infrastructure from earthquakes or volcanic ash. Statistics are given showing most natural catastrophes in 2012 were weather related, with over $170 billion in total costs. The document concludes with potential ways to prevent impacts of natural disasters like famine.
The document discusses torrential rain and its impacts. It defines torrential rain as an especially heavy amount of rain without a formal definition. Torrential rains can cause flash floods, stream flooding, landslides, and other secondary damages as the ground becomes saturated. The heavy rain can have devastating impacts like flooding that results in deaths, homelessness, damaged infrastructure, and destruction of crops.
The document discusses various types of natural disasters including volcanoes, cyclones, earthquakes, floods, droughts, and tsunamis. It describes the formation and impacts of these disasters. Specifically, it explains that volcanoes form from openings in the planet's surface that allow hot magma to escape. Cyclones form through the interaction of warm and cool air masses that create rotating storm systems. Earthquakes are caused by the sudden release of energy in the Earth's crust that creates seismic waves. Floods occur when bodies of water overflow their usual boundaries. Drought happens during prolonged periods of unusually dry weather. Tsunamis are a series of waves generated by displacement of water, often caused by earthquakes. The
The document discusses different types of weather including wind, lightning, storms, hurricanes, tornadoes, rain, hail and snow. It describes weather as short term changes in the atmosphere compared to climate which refers to typical weather patterns over longer periods. Key causes of different weather mentioned include varying amounts of heat from the sun in different parts of the Earth and warmer air rising. Measurement of weather factors like wind speed, direction, temperature and pressure are also summarized.
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Climate Extreme (extreme weather or climate event) refers to the occurrence of a value of a weather or climate variable above (or below) a threshold value near the upper (or lower) ends of the range of observed values of the variable. Extreme weather and climate events, interacting with exposed and vulnerable human and natural systems, can lead to disasters.
The document discusses various types of extreme weather events including hurricanes, tornadoes, blizzards, floods, and droughts. It provides details on the formation of hurricanes over warm ocean waters and specifics on major hurricanes like Andrew and Katrina. Tornadoes are described as powerful funnel clouds caused by colliding warm and cool air masses. The document also outlines significant blizzards, floods and droughts that have caused major damage and billions of dollars in losses across the United States.
MEANING OF AGRICULTURAL PRACTICES
Industry’s Best Practices
Modern Agricultural Equipment’s
Classification of Agriculture
Eight Important Types of world Agriculture
THE EFFECTS OF AGRICULTURAL PRACTICES ON BIODIVERSITY
Agriculture Management
Characteristics Of Sustainable Agriculture
Agricultural Drought
The document summarizes coastal morphology and the classification of coasts according to plate tectonics. It describes the three primary types of coasts - collision coasts, trailing edge coasts, and marginal sea coasts. Within these types are subclasses like continental collision coasts, island arc collision coasts, neo-trailing edge coasts, amero-trailing edge coasts and more. Each subclass is defined with examples. The document also discusses shore zones, beach features like berms and bars, and coastal landforms like dunes, troughs and ridges. Figures and diagrams provide visual examples.
Lightning is an electrical discharge caused by imbalances between Storm clouds and the ground or within the clouds themselves. (Definition, Types, Causes, Distribution, Prediction)
https://www.cda.org.bd
MEANING OF AGRICULTURAL PRACTICES
Industry’s Best Practices
Modern Agricultural Equipment’s
Classification of Agriculture
Eight Important Types of world Agriculture
THE EFFECTS OF AGRICULTURAL PRACTICES ON BIODIVERSITY
Agriculture Management
Characteristics Of Sustainable Agriculture
Agricultural Drought
https://www.cda.org.bd/
Kinetic studies on malachite green dye adsorption from aqueous solutions by A...Open Access Research Paper
Water polluted by dyestuffs compounds is a global threat to health and the environment; accordingly, we prepared a green novel sorbent chemical and Physical system from an algae, chitosan and chitosan nanoparticle and impregnated with algae with chitosan nanocomposite for the sorption of Malachite green dye from water. The algae with chitosan nanocomposite by a simple method and used as a recyclable and effective adsorbent for the removal of malachite green dye from aqueous solutions. Algae, chitosan, chitosan nanoparticle and algae with chitosan nanocomposite were characterized using different physicochemical methods. The functional groups and chemical compounds found in algae, chitosan, chitosan algae, chitosan nanoparticle, and chitosan nanoparticle with algae were identified using FTIR, SEM, and TGADTA/DTG techniques. The optimal adsorption conditions, different dosages, pH and Temperature the amount of algae with chitosan nanocomposite were determined. At optimized conditions and the batch equilibrium studies more than 99% of the dye was removed. The adsorption process data matched well kinetics showed that the reaction order for dye varied with pseudo-first order and pseudo-second order. Furthermore, the maximum adsorption capacity of the algae with chitosan nanocomposite toward malachite green dye reached as high as 15.5mg/g, respectively. Finally, multiple times reusing of algae with chitosan nanocomposite and removing dye from a real wastewater has made it a promising and attractive option for further practical applications.
Improving the viability of probiotics by encapsulation methods for developmen...Open Access Research Paper
The popularity of functional foods among scientists and common people has been increasing day by day. Awareness and modernization make the consumer think better regarding food and nutrition. Now a day’s individual knows very well about the relation between food consumption and disease prevalence. Humans have a diversity of microbes in the gut that together form the gut microflora. Probiotics are the health-promoting live microbial cells improve host health through gut and brain connection and fighting against harmful bacteria. Bifidobacterium and Lactobacillus are the two bacterial genera which are considered to be probiotic. These good bacteria are facing challenges of viability. There are so many factors such as sensitivity to heat, pH, acidity, osmotic effect, mechanical shear, chemical components, freezing and storage time as well which affects the viability of probiotics in the dairy food matrix as well as in the gut. Multiple efforts have been done in the past and ongoing in present for these beneficial microbial population stability until their destination in the gut. One of a useful technique known as microencapsulation makes the probiotic effective in the diversified conditions and maintain these microbe’s community to the optimum level for achieving targeted benefits. Dairy products are found to be an ideal vehicle for probiotic incorporation. It has been seen that the encapsulated microbial cells show higher viability than the free cells in different processing and storage conditions as well as against bile salts in the gut. They make the food functional when incorporated, without affecting the product sensory characteristics.
Evolving Lifecycles with High Resolution Site Characterization (HRSC) and 3-D...Joshua Orris
The incorporation of a 3DCSM and completion of HRSC provided a tool for enhanced, data-driven, decisions to support a change in remediation closure strategies. Currently, an approved pilot study has been obtained to shut-down the remediation systems (ISCO, P&T) and conduct a hydraulic study under non-pumping conditions. A separate micro-biological bench scale treatability study was competed that yielded positive results for an emerging innovative technology. As a result, a field pilot study has commenced with results expected in nine-twelve months. With the results of the hydraulic study, field pilot studies and an updated risk assessment leading site monitoring optimization cost lifecycle savings upwards of $15MM towards an alternatively evolved best available technology remediation closure strategy.
Recycling and Disposal on SWM Raymond Einyu pptxRayLetai1
Increasing urbanization, rural–urban migration, rising standards of living, and rapid development associated with population growth have resulted in increased solid waste generation by industrial, domestic and other activities in Nairobi City. It has been noted in other contexts too that increasing population, changing consumption patterns, economic development, changing income, urbanization and industrialization all contribute to the increased generation of waste.
With the increasing urban population in Kenya, which is estimated to be growing at a rate higher than that of the country’s general population, waste generation and management is already a major challenge. The industrialization and urbanization process in the country, dominated by one major city – Nairobi, which has around four times the population of the next largest urban centre (Mombasa) – has witnessed an exponential increase in the generation of solid waste. It is projected that by 2030, about 50 per cent of the Kenyan population will be urban.
Aim:
A healthy, safe, secure and sustainable solid waste management system fit for a world – class city.
Improve and protect the public health of Nairobi residents and visitors.
Ecological health, diversity and productivity and maximize resource recovery through the participatory approach.
Goals:
Build awareness and capacity for source separation as essential components of sustainable waste management.
Build new environmentally sound infrastructure and systems for safe disposal of residual waste and replacing current dumpsites which should be commissioned.
Current solid waste management situation:
The status.
Solid waste generation rate is at 2240 tones / day
collection efficiently is at about 50%.
Actors i.e. city authorities, CBO’s , private firms and self-disposal
Current SWM Situation in Nairobi City:
Solid waste generation – collection – dumping
Good Practices:
• Separation – recycling – marketing.
• Open dumpsite dandora dump site through public education on source separation of waste, of which the situation can be reversed.
• Nairobi is one of the C40 cities in this respect , various actors in the solid waste management space have adopted a variety of technologies to reduce short lived climate pollutants including source separation , recycling , marketing of the recycled products.
• Through the network, it should expect to benefit from expertise of the different actors in the network in terms of applicable technologies and practices in reducing the short-lived climate pollutants.
Good practices:
Despite the dismal collection of solid waste in Nairobi city, there are practices and activities of informal actors (CBOs, CBO-SACCOs and yard shop operators) and other formal industrial actors on solid waste collection, recycling and waste reduction.
Practices and activities of these actor groups are viewed as innovations with the potential to change the way solid waste is handled.
CHALLENGES:
• Resource Allocation.
Optimizing Post Remediation Groundwater Performance with Enhanced Microbiolog...Joshua Orris
Results of geophysics and pneumatic injection pilot tests during 2003 – 2007 yielded significant positive results for injection delivery design and contaminant mass treatment, resulting in permanent shut-down of an existing groundwater Pump & Treat system.
Accessible source areas were subsequently removed (2011) by soil excavation and treated with the placement of Emulsified Vegetable Oil EVO and zero-valent iron ZVI to accelerate treatment of impacted groundwater in overburden and weathered fractured bedrock. Post pilot test and post remediation groundwater monitoring has included analyses of CVOCs, organic fatty acids, dissolved gases and QuantArray® -Chlor to quantify key microorganisms (e.g., Dehalococcoides, Dehalobacter, etc.) and functional genes (e.g., vinyl chloride reductase, methane monooxygenase, etc.) to assess potential for reductive dechlorination and aerobic cometabolism of CVOCs.
In 2022, the first commercial application of MetaArray™ was performed at the site. MetaArray™ utilizes statistical analysis, such as principal component analysis and multivariate analysis to provide evidence that reductive dechlorination is active or even that it is slowing. This creates actionable data allowing users to save money by making important site management decisions earlier.
The results of the MetaArray™ analysis’ support vector machine (SVM) identified groundwater monitoring wells with a 80% confidence that were characterized as either Limited for Reductive Decholorination or had a High Reductive Reduction Dechlorination potential. The results of MetaArray™ will be used to further optimize the site’s post remediation monitoring program for monitored natural attenuation.
Climate Change All over the World .pptxsairaanwer024
Climate change refers to significant and lasting changes in the average weather patterns over periods ranging from decades to millions of years. It encompasses both global warming driven by human emissions of greenhouse gases and the resulting large-scale shifts in weather patterns. While climate change is a natural phenomenon, human activities, particularly since the Industrial Revolution, have accelerated its pace and intensity
ENVIRONMENT~ Renewable Energy Sources and their future prospects.tiwarimanvi3129
This presentation is for us to know that how our Environment need Attention for protection of our natural resources which are depleted day by day that's why we need to take time and shift our attention to renewable energy sources instead of non-renewable sources which are better and Eco-friendly for our environment. these renewable energy sources are so helpful for our planet and for every living organism which depends on environment.
Presented by The Global Peatlands Assessment: Mapping, Policy, and Action at GLF Peatlands 2024 - The Global Peatlands Assessment: Mapping, Policy, and Action
Microbial characterisation and identification, and potability of River Kuywa ...Open Access Research Paper
Water contamination is one of the major causes of water borne diseases worldwide. In Kenya, approximately 43% of people lack access to potable water due to human contamination. River Kuywa water is currently experiencing contamination due to human activities. Its water is widely used for domestic, agricultural, industrial and recreational purposes. This study aimed at characterizing bacteria and fungi in river Kuywa water. Water samples were randomly collected from four sites of the river: site A (Matisi), site B (Ngwelo), site C (Nzoia water pump) and site D (Chalicha), during the dry season (January-March 2018) and wet season (April-July 2018) and were transported to Maseno University Microbiology and plant pathology laboratory for analysis. The characterization and identification of bacteria and fungi were carried out using standard microbiological techniques. Nine bacterial genera and three fungi were identified from Kuywa river water. Clostridium spp., Staphylococcus spp., Enterobacter spp., Streptococcus spp., E. coli, Klebsiella spp., Shigella spp., Proteus spp. and Salmonella spp. Fungi were Fusarium oxysporum, Aspergillus flavus complex and Penicillium species. Wet season recorded highest bacterial and fungal counts (6.61-7.66 and 3.83-6.75cfu/ml) respectively. The results indicated that the river Kuywa water is polluted and therefore unsafe for human consumption before treatment. It is therefore recommended that the communities to ensure that they boil water especially for drinking.
Epcon is One of the World's leading Manufacturing Companies.EpconLP
Epcon is One of the World's leading Manufacturing Companies. With over 4000 installations worldwide, EPCON has been pioneering new techniques since 1977 that have become industry standards now. Founded in 1977, Epcon has grown from a one-man operation to a global leader in developing and manufacturing innovative air pollution control technology and industrial heating equipment.
3. Types of Hailstorm
Hailstorm has no types.
PREDICTION
Hailstorm doesn’t have a sufficient prediction system
right now.
7/11/2018 3
4. CAUSES OF
HAILSTORM
Hailstorms form within an unusually unstable air mass, that is, an
air mass in which the temperature falloff with height is much
greater than normal. The unstable air is necessary to produce
large updraft speeds fast enough to keep a developing hailstone
from falling to the ground.
In a hailstorm, small ice particles that form above the freezing
level (which occurs in all thunderstorms) collect either rain water
or cloud water on them, forming a water shell that freezes. The
tilted updraft and downdraft structure of the storm is important in
order for hailstones to grow because they can be 'recycled' several
times, until they either become too large for the updraft to carry
them, or they get caught in a downdraft, and they finally reach the
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5. DISTRIBUTION OF HAILSTORM
Hail occurs most frequently within continental interiors at mid-
latitudes.
Hail is less common in the tropics despite a much higher
frequency of thunderstorms than in the mid-latitudes. Hail in the
tropics occurs mainly at higher elevations.
Hail is also much more common along mountain ranges .
One of the most notorious regions for large hail is the
mountainous area of northern India and Bangladesh ,which
allegedly has more hail-related deaths than anywhere else in the
world and also some of the largest hailstones ever measured.
7/11/2018 5
6. IMPACTS OF HAILSTORM
Most humans are able to seek shelter when a hail storm hits. However, if
someone is unable to run for cover, sizable hail can injure or even kill him.
Hail stones can be as large as a football, and they can hit with the same force
as a 100 mph fastball coming right at someone at the surface.
Hail damage has been known to be harmful to trees, plants, crops and flower
beds. Even small pieces of hail combined with strong winds can be damaging
to vegetation such as lettuce, cabbage and spinach.
After the hail has melted, it has the same effects on the environment as rain
water. Water is one of the best natural resources and melted hail soaks into
the ground and replenishes lakes, rivers, streams and other water reservoirs.
It can also sustain plant, animal and human life. However, too much water can
cause soil erosion and have a crippling effect on homes, trees and the
environment.
Hail can destroy properties such as cars, roof, shingles, siding, gutters,
windows and other items around the home.7/11/2018 6
7. PREVENTION FOR HAILSTORM
Remain indoors during the hail storm to avoid injury.
Hail has caused fatalities in the past, so staying indoors
is important.
Be sure to bring family pets indoors. The deadliest
recorded hailstorm claimed the lives of 1,600
domesticated animals.
Move automobiles into garages or carports.
Stay away from windows that are being struck with hail
to avoid injury.
Do not use electronics. Often hail is part of a severe
storm which likely includes lightning.
The weather conditions that causes hail can also cause
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