Hurricanes “ Now when neither sun nor stars appeared for many days, and no small tempest beat on us, all hope that we would be saved was finally given up.” Acts 27:20 (Read all of Acts 27 for a story of a storm at sea.)
Weather Patterns <ul><li>Scientists keep records every year and have noticed that thunderstorms and tornadoes are more likely to occur in the spring and summer. Why? </li></ul><ul><li>Air temperature is hotter in the spring and summer </li></ul><ul><li>Humidity rises </li></ul><ul><li>Cold fonts collide with warm fronts </li></ul>Hurricanes also follow patterns. Hurricane season starts in June and ends in November. Most hurricanes happen in August, September and October.
What is a hurricane? <ul><li>A hurricane, also known as a tropical cyclone, is a huge violent tropical storm that usually forms near the coast of Africa in the tropical waters of the Atlantic Ocean. Sometimes they form in warm waters of the Gulf of Mexico. </li></ul><ul><li>It can be up to 600 miles across and have strong </li></ul><ul><li>winds spiraling (rotating) at speeds of 75 to 200 mph. </li></ul><ul><li>Each hurricane usually lasts for over a week, </li></ul><ul><li>moving 10-20 miles per hour over the open ocean. </li></ul>Hurricanes are called TYPHOONS on the other side of the world. FUN FACT:
How hurricanes form <ul><li>Hurricanes start out as thunderstorms. As the winds strengthen, a tropical depression forms. </li></ul><ul><li>Hurricanes gather heat and energy as the clouds pass over the warm ocean waters (>80 degrees). </li></ul><ul><li>Evaporation from the seawater increases their power. As they grow in strength, they become known as tropical storms. </li></ul>Hurricanes never form near the equator. FUN FACT: This is a satellite image of Hurricane Katrina that hit New Orleans in September 2005.
Hurricane winds <ul><li>A wall of hurricanes winds rotate in a counter-clockwise direction around an "eye." The center of the storm or "eye" is the calmest part. It has only light winds and fair weather. It looks like the center hole in a doughnut. </li></ul><ul><li>When they come onto land, the heavy rain, strong winds and large waves can damage buildings, trees and cars. </li></ul>
Saffir-Simpson Scale <ul><li>Meteorologists rate hurricanes according to their wind speeds. The higher the wind speeds, the higher the category, the more severe damage the hurricane will cause. </li></ul><ul><li>Read here for more specifics. </li></ul>Catastrophic > 18 ft > 155 5 Extreme 13-18 ft 131-155 4 Extensive 9-12 ft 111-130 3 Moderate 6-8 ft 96-110 2 Minimal 4-5 ft 74-95 1 Damage Storm Surge Sustained Winds (MPH) Category
Hurricane Hunters <ul><li>We know how strong a hurricane is because of the brave "hurricane hunters" who work for the National Oceanic and Atmospheric Administration (NOAA). </li></ul><ul><li>They fly special planes through a hurricane. Each mission lasts about ten hours, with the crews passing four to six times through the storm. </li></ul><ul><li>The planes carry radar, sophisticated computers, and weather instruments that determine characteristics such as temperature, air pressure, wind speed, and wind direction inside the hurricane. </li></ul><ul><li>By mission's end, NOAA can warn everyone in the hurricane's path in plenty of time for people to evacuate the coastlines. </li></ul>
Storm Surge <ul><li>Storm surges are frequently the most devastating element of a hurricane. </li></ul><ul><li>As a hurricane’s winds spiral around and around the storm, they push water into a mound at the storm’s center. This mound of water becomes dangerous when the storm reaches land because it causes flooding along the coast. </li></ul><ul><li>The water piles up, unable to escape anywhere but on land as the storm carries it landward. A hurricane will cause more storm surge in areas where the ocean floor slopes gradually. This causes major flooding. </li></ul><ul><li>Wind, waves, and sea-level rise all contribute to storm-surge damage. </li></ul>
Weakening hurricanes <ul><li>Hurricanes weaken when they touch land because they no longer have the warm ocean waters to make them stronger. </li></ul><ul><li>Even after a hurricane passes over land, winds may have already done their damage, but the storm surge will continue to flood and destroy property, including people’s homes. </li></ul><ul><li>When a hurricane is predicted to make landfall, we need to pray for all the people who will be affected. God is in control over all storms—even hurricanes! </li></ul>Matthew 8:26 shows us that God controls the winds and the seas: “ He said to them, ‘Why are you fearful, O you of little faith?’ Then He arose and rebuked the winds and the sea, and there was a great calm.”
Naming Hurricanes The World Meteorological Organization names hurricanes, rotating between men and women’s names. There's 6 different name lists that alternate each year. If a hurricane does significant damage, its name is retired and replaced with another. No hurricane names begin with the letters q,u,x,y or z. FUN FACT: Alberto Beryl Chris Debby Ernesto Florence Gordon Helene Isaac Joyce Kirk Leslie Michael Nadine Oscar Patty Rafael Sandy Tony Valerie William Arlene Bret Cindy Dennis Emily Franklin Gert Harvey Irene Jose Katrina Lee Maria Nate Ophelia Philippe Rita Stan Tammy Vince Wilma Alex Bonnie Charley Danielle Earl Frances Gaston Hermine Ivan Jeanne Karl Lisa Matthew Nicole Otto Paula Richard Shary Tomas Virginie Walter Ana Bill Claudette Danny Erika Fabian Grace Henri Isabel Juan Kate Larry Mindy Nicholas Odette Peter Rose Sam Teresa Victor Wanda Arthur Bertha Cristobal Dolly Edouard Fay Gustav Hanna Isidore Josephine Kyle Lili Marco Nana Omar Paloma Rene Sally Teddy Vicky Wilfred Andrea Barry Chantal Dean Erin Felix Gabrielle Humberto Ingrid Jerry Karen Lorenzo Melissa Noel Olga Pablo Rebekah Sebastien Tanya Van Wendy 2012 2011 2010 2009 2008 2007
Watch a hurricane Satellite images and video are from Hurricane Wilma, a category 5 storm that devastated southern Florida in 2005.
Are hurricanes in the ocean now? <ul><li>Click here to find out! </li></ul>Most information was taken from Christian Kids Explore Earth and Space by Stephanie Redmond and http://www.weatherwizkids.com/hurricane1.htm