1. Always originate over tropical oceans
2. Measured on the Saffir-Simpson scale (category 1-5). They are classified on their maximum sustained winds.
3. Named are in alphebetical order each season, alternating male/female. Q, U, X, Y, and Z are not used. After W, we use the Greek alphebet.
4. names of devistating hurricanes are retired and never used again (like Katrina, Andrew, etc.)
5. 66% of all hurricanes occur in the northern hemisphere.
6. Hurricanes never originate within 5 degrees of the equator
7. Hurricanes move in a counter-clockwise rotation in the northern hemisphere, and clockwise in the souther hemisphere
8. The western Pacific in the northern hemisphere produces the largest number hurricanes (though they are called typhoons there)
9. Surface temperature of the ocean must be 80 degrees or more for a hurricane to form, and remain that warm for about 200 feet deep.
10. Winds are strongest to the right of the storms direction of motion.
----a few more just because-----
11. Hurricanes can last up to 20 days.
12. Hurricanes lose strength, and will continue to lose strength once they have moved inland.
13. They eye is the center of the storm, and it is a nearly cloud free area, especially in well developed hurricanes.
14. Hurricanes rarely originate north or south of 25 degrees latitude because the ocean is too cold.
15. Tropical storms are considered hurricanes when their wind speeds hit 64 knots or more.
2007-03-16 06:54:31
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answer #1
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answered by Anonymous
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They are born when we have two or more storms collied with each other! They turn counter clockwise in the north hemisphere! They have a low pressure center! They rise some times 1.5 miles above the ground! The temperature drops! High speed winds up to 190 mph. They "feed up" from the see warm waters! They are catastrophic! They kill people! They are bringing life to isolated islands as well (seeds, insects)!
2007-03-16 05:52:03
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answer #2
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answered by filip 4
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- The four basic categories of tropical weather events are tropical disturbance, tropical depression, tropical storm and hurricane.
- A tropical disturbance is an organized tropical weather system that maintains its identity for more than 24 hours.
- Tropical depressions have maximum sustained wind speeds of 38 mph or less — stronger tropical storms have maximum sustained wind speeds from 39 to 73 mph.
- When wind speeds reach 74 mph or more, the storm is upgraded to a hurricane.
- Hurricanes are further categorized on a scale of increasing intensity known as the Saffir-Simpson Hurricane Scale, which ranks hurricane strength in Categories 1 to 5.
- A Category 1 hurricane (winds from 74 to 95 mph) will mainly cause damage to trees and unanchored structures like mobile homes. Low-lying coastal roads can become flooded and some boats may be torn from moorings.
- In a Category 2 hurricane (winds from 96 to 110 mph), some trees will be blown down. Mobile homes, roofs, piers and signs may sustain considerable damage, but no major damage to buildings will be experienced. Marinas and coastal roads will be flooded.
- Hurricane Ivan, which struck coastal Alabama in 2004, was a Category 3 storm (winds from 111 to 130 mph). In these hurricanes, mobile homes and buildings near the coast can be destroyed by winds or battering waves. Serious flooding can block roads up to eight miles inland or more. Evacuation may be required near shorelines.
- In a Category 4 hurricane, like August's Hurricane Katrina, wind speeds range from 131 to 155 mph. Large trees are blown down, beaches suffer major erosion, and roofs, windows and doors are often blown off structures. Escape routes can be cut by floodwaters three to five hours before the hurricane center arrives. Massive evacuations of residences within two miles of shore may be required.
- The most extreme category of hurricane is Category 5, where winds exceed 156 mph. Hurricane Andrew, which destroyed large swaths of Miami and south Florida in 1992, was a Category 5 hurricane.
2007-03-16 05:49:19
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answer #3
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answered by Kelly B 2
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1-They can be 500 miles across
2- Central point int he center is called an eye
3- center of the eye is calm
4- The swirl starts because of the spinning of the earth
5- They usually start at the equator
6- They usually start around 64 MPH and can get up to hundreds of MPH
7- There are about 45 of them a year
8- They travel EASTWARD
9- They cause sea surges
10- They can not spin clockwise.
2007-03-16 05:46:28
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answer #4
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answered by Karen 3
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anyone notice that Karen gave 5 out of 10 incorrect answers?
WIll serve the asker right if she used that for homework instead of doing it herself......
2007-03-17 13:25:40
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answer #5
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answered by yankee_sailor 7
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You dont need facts you need advice, if its a category 3 or higher, drive to a different state NOW!!!!!!! Remember katrina???
2007-03-16 05:42:17
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answer #6
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answered by bmccaffrey2583 2
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they rotate counter clock wise
2007-03-16 05:39:34
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answer #7
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answered by nd721 3
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They are violent.
2007-03-16 05:39:40
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answer #8
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answered by Your Mom 5
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for school?
2007-03-16 05:38:43
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answer #9
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answered by Anonymous
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