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Tornados

Tornados . Nature’s Deadliest Weapon. TORNADO WATCH - Tornadoes are possible in your area. Stay tuned to the radio or television news. TORNADO WARNING - A tornado is either on the ground or has been detected by Doppler radar. Seek shelter immediately!. What is a tornado.

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Tornados

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  1. Tornados Nature’s Deadliest Weapon

  2. TORNADO WATCH - Tornadoes are possible in your area. Stay tuned to the radio or television news.TORNADO WARNING - A tornado is either on the ground or has been detected by Doppler radar. Seek shelter immediately!

  3. What is a tornado • A tornado is a violent rotating column of air • It goes from a thunderstorm to the ground. • They are very dangerous. • www.americaslibrary.gov/es/ks/es_ks_tornado_1...

  4. What can they do? • They can destroy large buildings, uproot trees and hurl vehicles hundreds of yards. • They can also drive straw into trees. • Damage paths can be in excess of one mile wide to 50 miles long. • www.thunderstorm.co.nz/Greymouth%20Tornado.htm

  5. How do tornadoes form? • Most tornadoes form from thunderstorms. • You need warm, moist air from the Gulf of Mexico and cool, dry air from Canada. When these two air masses meet, they create instability in the atmosphere. • www.weatherwizkids.com/tornado.htm

  6. When do tornadoes happen? • Tornadoes can happen at any time of the year and at any time of the day. • In the south, tornado season is from March through May. • In the north, tornado season is during the summer. • Tornadoes are most likely to occur between 3 p.m. and 9 p.m.

  7. Where do tornadoes happen?http://www.nssl.noaa.gov/primer/tornado/images/tor_alley_lg.gif • The central part of the United States, is where more than 500 tornadoes occur every year. It is commonly known as "Tornado Alley".

  8. What are the different types of tornadoes? • Waterspout • Dust Devil • Gustnadoes • Supercell Tornadoes • Landspouts

  9. Waterspout • Rotating wind that forms a tunnel over water. • Sometimes moves to land. • Winds up to 200 mph • Can reach up to 10,000 feet • www.jao.com/africa/zaire-up/pic05.html

  10. Dust Devil • Swirls of hot air that move upward. • Commonly found in the desert • Top wind speeds up to 60 mph • media.graytvinc.com/images/dust+devil.jpg

  11. Gustnadoes • Weak funnels that are not connected to clouds • Often come with thudnerstorms • Can be mistaken for tornadoes because of debris • www.harkphoto.com/05262002.html

  12. Supercell Tornado • Largest and most dangerous tornado • Spin under rotating storms • Winds up to 300 mph • Can be up to a mile wide • Can last for several hours • media.graytvinc.com/images/supercell+tornado.jpg

  13. Landspouts • Form on land under cumulus clouds • Winds up to 140 mph • Last from 10-15 minutes • media.graytvinc.com/images/landspout.jpg

  14. Fujita Scale of Tornadoes • F0: 40-72 mph, Branches broken off trees; minor roof damage • F1: 73-112, Trees snapped; mobile home pushed off foundations; roofs damaged • F2: 113-157 mph, Mobile homes demolished; trees uprooted; strong built homes unroofed • F3: 158-206 mph, Trains overturned; cars lifted off the ground; strong built homes have outside walls blown away • F4: 207-260 mph, Houses leveled leaving piles of debris; cars thrown 300 yards or more in the air • F5: 261-318 mph, Strongly built homes completely blown away; automobile-sized missiles generated

  15. Before a Tornado • Have a disaster plan ready • Make sure everyone knows where to go • Prepare a disaster supply kit: Include a first aid kit, canned food, a can opener, bottled water, battery-operated radio, flashlight, protective clothing and written instructions on how to turn off electricity, gas, and water.

  16. During Tornado • Go to a basement or an interior room like a bathroom. Make sure there are no windows. • Get under a sturdy piece of furniture like a table or a desk. • If you live in a mobile home, get out. • Never try to outrun a tornado in your car. Leave it immediately.

  17. After Tornado • Stay indoors until it is safe to come out. • Check for injured or trapped people, without putting yourself in danger. • Watch out for downed power lines. • Use a flashlight to inspect your home.

  18. At School • Students should go to the basement. Schools without basements should use interior rooms and hallways on the lowest floor away from windows. • Crouch down on your knees and protect your head with your arms.

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