Hurricanes

1. Hurricanes by Ronnie Pelton And Josh Aalders

2. Three Day Record This is a three day record of The one hurricane over top of South Florida heading east To west.

3. Hurricane Floyd Hurricane Floyd was a Category 3 storm that brought intense rains and record flooding to the eastern United States and Canada. Nearly 90 percent of the fatalities associated with this storm were drownings due to inland flooding.

4. How it effects us. Buildings can be constructed to be hurricane-resistant by implementing such practices as tying down rafters and including strong metal shutters to cover windows and doors in the event of a hurricane.

5. Hurricane Dennis

6. How A Hurricane Forms? Hurricanes form in tropical regions where there is warm water ( 27 degrees Celsius), moist air and converging equatorial winds. Most Atlantic hurricanes begin off the west coast of Africa, starting as thunderstorms that move out over the warm, tropical ocean waters. A thunderstorm becomes a hurricane in three stages: *Tropical depression - swirling clouds and rain with wind speeds of less than 38 mph *Tropical storm - wind speeds of 39 to 73 mph *Hurricane - wind speeds greater than 74 mph

7. How A Hurricane Forms - Continuous evaporation-condensation of the water cycle in the warm, humid ocean air - Patterns of wind shown by **converging winds at the surface and strong, close-to-same speed winds at higher altitudes - A difference in air pressure between the surface and high altitude ** "Converging winds" are winds moving in different directions that run into each other. Converging winds at the surface collide and push warm, moist air upward. This rising air reinforces the air that is already rising from the surface, so the circulation and wind speeds of the storm increase.

8. Stage One-ThunderStorms Thunderstorms can be created by most generally convectional precipitation. It can take several hours to several days for a thunderstorm to develop into a hurricane. Although the whole process of hurricane formation is not entirely understood.

9. Stage Two-Tropical Storms Once a normal thunderstorm has intensified to the point where its maximum average winds are between (39-73 mph), it becomes a tropical storm. It is at this time that it is given a name. During this time, the storm itself becomes more organized and begins to become more circular in shape.

10. Stage Three-Hurricane As surface pressures continue to drop, a tropical storm becomes a hurricane when sustained wind speeds reach (74 mph). A rotation develops around the central core.

11. Parts of a Hurricane After a hurricane forms, it has three main parts: - Eye- the low pressure, calm center of circulation - Eye wall - area around the eye with the fastest, most violent winds - Rain bands - bands of thunderstorms circulating outward from the eye that are part of the evaporation/condensation cycle that feeds the storm

12. Hurricane Season Every year between June 1 and November 30 (commonly called hurricane season), hurricanes threaten the eastern and gulf coasts of the United States, Mexico, Central America and the Caribbean.

13. Why They Occur Tropical cyclones are greatly intensified low pressure cells that spend most of their lives over the oceans. In the Atlantic Ocean, they are called hurricanes. In the Pacific Ocean, they are usually referred to as typhoons.

14. Classes of Hurricanes Class #1-64-82kts Class #2-83-95kts Class #3-96-113kts Class #4-114-134kts Class #5-135kts plus

15. On average, less than two hurricanes per year reach the eastern seaboard Of North America from the western coast of Africa. However, several more usually come close enough to the coast to cause at least some damage. In the western North Atlantic Ocean, an average of nine hurricanes occur each year. The eastern North Pacific Ocean has an average of four to five more tropical cyclones per year than the western North Atlantic. Average

16. Year 1996 RED-Hurricane YELLOW-T,Storm GREEN-T,Depression

17. Insurance $  The hurricane premium for a $200,000 Canadian beach home has soared from $316 in 1995 to $1,876now. In July, it's scheduled to climb to $2,300.

18. In Case Of Hurricane Prepare a personal evacuation plan. Identify ahead of time where you could go if you are told to evacuate. Choose several places--a friend's home in another town, a motel, or a shelter.

19. How They Die Hurricane aftermath

20. Destruction Cost Damage Cost

21. Pressure Gradient High-pressure air in the upper atmosphere (above 30,000 ft / 9,000 m) over the storm's center also removes heat from the rising air, further driving the air cycle and the hurricane's growth. As high-pressure air is sucked into the low-pressure center of the storm, wind speeds increase.

22. House Safety Buildings can be constructed to be hurricane-resistant by implementing such practices as tying down rafters and including strong metal shutters to cover windows and doors in the event of a hurricane. Individuals can prepare for hurricanes by stocking appropriate materials such as food, water, batteries, etc., or evacuating if a hurricane is expected to directly "hit" their community.

23. History Hurricanes have been around sense the beginning of time because there’s always a high and low pressure cell that collide and create a hurricane.

24. Hurricane History this hurricane caused 46 deaths and $100 million in damage in the United States, the worst effects occurred at sea where it wreaked havoc on World War II shipping.

25. Population Effects The graphs show population change for the period 1900-2000 (if available) versus hurricane strikes (1900-2002).

26. Hurricane Terms Tropical Depression An organized system of clouds and thunderstorms with a defined circulation and top sustained winds of less than 39 miles-per-hour. Tropical Storm An organized system of strong storms with a defined circulation and top sustained winds of between 39 - 74 mph. Tropical Storm Watch Tropical storm conditions are possible in the specified area of the watch within 36 hours. Tropical Storm Warning Tropical storm conditions are expected in the affected area within 24-hours.

27. Hurricane Terms Hurricane An intense tropical weather system with a well-defined circulation and a sustained wind speed of 74 mph or higher. Hurricane Watch Hurricane conditions are possible within the specified area within 36 hours. At this point, take immediate action to protect your family and property. Hurricane Warning Hurricane conditions are expected in the specified area within 24 hours. Storm Surge A rapidly rising dome of seawater up to 20 feet high that arrives with a hurricane. Evacuation zones are identified according to their susceptibility to this occurrence

28. What Happens When Hurricanes Occur ? When hurricanes occur they can devastate coastal regions and ruin fields ,house’s,crops and lives, If you don’t have INSURANCE. When a hurricane rips through a community or village , lives can also be lost.

29. Bibliography http://home.att.net/~typhoon1/index.html http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hurr/stages/home.rxml http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hurr/home.rxml http://cimss.ssec.wisc.edu/tropic/tropic.html http://www.aoml.noaa.gov/hrd/weather_sub/faq.html http://encarta.msn.com/encnet/refpages/RefArticle.aspx?refid=761565992 http://www.naturalhazards.org/investigate/hurricanes/index.html http://www.miami.com/mld/miami/2698591.htm http://www.fpl.com/storm/contents/storm_terms.shtml http://www.srh.noaa.gov/jan/hrcn4.html