Natural disasters can be categorized as meteorological, geological, or hydrological based on their cause. Meteorological disasters include hurricanes, typhoons, cyclones, tornadoes, and are caused by atmospheric conditions; they typically involve strong winds and rain. Geological disasters are earthquakes and volcanic eruptions caused by movements of tectonic plates deep below the Earth's surface. Hydrological disasters refer to tsunamis and floods caused by water, such as tsunamis triggered by undersea earthquakes or severe rainstorms causing floods. The document provides examples of different types of natural disasters, how and where they typically occur.

1. Natural Disasters
Presented by: Faisal Naseer, Sanaullah Khan

2. ● Definition.
● Categories of natural disasters.
● Places of occurrence.
● Similarities & Differences.
Outline:

3. What is a Natural Disaster?
•
• A natural disaster is an event
caused by natural forces of nature
that has a large effect on the human
population.

4. Meteorological
Natural disasters of the atmosphere

5. Types of Meteorological
Disasters
• Hurricane, Typhoon, Cyclones.
• Tornadoes.
• Characteristics: Hard rain, flooding,
high winds.
• Duration: 8 – 24 hours of full force

6. Cyclone, Typhoon,
Tornado, Hurricane…
What’s the difference??

7. Cyclone, Typhoon,
Hurricane
• Define: A tropical storm that forms over an
ocean
• The difference is WHERE they form
• Cyclone: Asia, South of the Equator
• Typhoon: Asia, North of the Equator
• Hurricane: Atlantic Ocean & East Coast of
North America

8. Tropical Storm Map

9. Test Your Knowledge
• Write these down:
• What wind storm occurs in these countries:
• United States:
• Australia:
• India:
• Japan:
• Canada:

10. Wait, what’s a Tornado??
Isn’t that the same??

11. Tornado
A Tornado forms over
land.
Also called a Twister
Most Of them occurs in
“Tornado Alley” in the
USA

12. Tornadoes Occurrence
Worldwide
Areas Worldwide which experience the highest chance of seeing
tornados. shaded orange.

13. Tornado Alley
“Tornado Alley” is the area
where Tornados form the
most.
It includes the states of:
Texas, Oklahoma, Kansas,
Nebraska, and South
Dakota

14. How and why do they occur?
The middle states are
located between the warm
air of the Gulf of Mexico and
the cold air of the Pacific
Ocean from Canada.

15. Tornados vs. Hurricanes
Tornado Hurricanes

16. Geological
Disasters
Natural disasters of the
land

17. Earthquake?
What’s that??

18. Earthquakes
A sudden shaking of the ground as
a result of movements of the
earth’s tectonic plates

19. How do they happen?
• The earth’s surface rests on moving
sheets of crust called tectonic
plates
• These plates move VERY slowly

20. How do they happen?
• When the plates collide, they create
mountains
• When the plates separate, they form
volcanoes.

21. Hydrological Disasters
Natural disasters of the water

22. Types of Meteorological
Disasters•
• Tsunami.
A long, high sea wave caused by an earthquake or other disturbance.
• Floods.
An overflow of water beyond its normal limits, especially over what is
normally dry.

23. How do They Occur
TSUNAMI
FLOODS

24. Where do Tsunami Occur

25. Where do Floods occur

26. Let’s see what they can
do.

27. video

28. Statistics
● In 2012, there were 905 natural catastrophes worldwide.
● 93% of which were weather-related disasters.
● 45% were meteorological (storms)
● 36% were hydrological (floods)
● 12% were climatological (heat waves, cold waves,
droughts, wildfires)
● 7 % were geophysical events (earthquakes and volcanic
eruptions).
● Between 1980 and 2011 geophysical events accounted
for 14% of all natural catastrophes.