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HURRICANES

HURRICANES. The History, Structure, Development, and Destruction. Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm. What is a hurricane?. Violent cyclonic storm that develops in the tropical region Wind speeds are > 74 mph. Source: http://earthobservatory.nasa.gov/

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HURRICANES

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  1. HURRICANES The History, Structure, Development, and Destruction Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm

  2. What is a hurricane? • Violent cyclonic storm that develops in the tropical region • Wind speeds are > 74 mph Source: http://earthobservatory.nasa.gov/ Newsroom/NewImages/images.php3?img_id=680

  3. Rotation and Pressure In which direction does a hurricane rotate? COUNTERCLOCKWISE Is the barometric pressure inside the hurricane high or low? LOW

  4. When is Hurricane Season? June 1st through November 31st

  5. What conditions must be present for a hurricane to develop? • Warm ocean temperatures (>80˚ F) up to 60m deep • Little to no wind shear • Low pressure system at least 5˚ North or South of Equator • Rotation caused by winds Source: http://lwf.ncdc.noaa. gov/oa/reports/fran/fran.html

  6. What is the major source of energy fueling a hurricane? Heat Energy evaporating from the ocean surface Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hyd/evap.rxml

  7. Hurricane Anatomy Source: http://hurricanes.noaa.gov/prepare/structure.htm

  8. Another look at the Structure Source: http://hurricanes.noaa.gov/prepare/structure.htm

  9. Comparison of Terms • Tropical Disturbance Group of thunderstorms in the tropics that are present for at least 24 hours • Tropical Wave lack of circulation, winds <25 mph and every direction • Tropical Depression closed circulation but disorganized, winds at least 25 mph

  10. Comparison of Terms Tropical Storm Shower and thunderstorm moves over closed circulation, winds greater than 39 mph Hurricane Eye is developed, winds > 74 mph

  11. Compare the Following Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hurr/stages/home.rxml

  12. By what two factors is hurricane strength measured? Wind Speed Barometric Pressure

  13. What is the Scale Used to Categorize Hurricanes? Saffir-Simpson Scale Source: http://kids.earth.nasa.gov/archive/hurricane/saffir-simpson.html

  14. What is a storm surge? • Large wall or dome of water that rushes into the coastline as a result of a hurricane making landfall • To the right are the areas affected by high storm surges Souce: http://www.wkrg.com/hurricanecenter/surge/SE.jpg

  15. Hurricane Katrina

  16. Hurricane Katrina-hitting land

  17. Hurricane Katrina

  18. Explain why the deadliest storms were longer ago. • Lack of instrumentation to predict and track storms • People were not warned of the incoming danger Results of the Galveston Hurricane Source: http://www.1900storm.com/photographs/photo10.html

  19. Flooding of Tar River as result of Hurricanes Dennis and Floyd Dockside Tar River Estates Mrs. Parker’s Old House Final Water Level http://cindi.usgs.gov/cindi/hazard/event/floyd/ncflood/mediums/img023.jpg

  20. ArthurBerthaCristobalDollyEdouardFayGustavHannaIkeJosephineKyleLauraArthurBerthaCristobalDollyEdouardFayGustavHannaIkeJosephineKyleLaura MarcoNanaOmarPalomaReneSallyTeddyVickyWilfred 2008 Hurricane Names

  21. Damage to Greenville Source: http://www.guc.com/about/floyd.htm

  22. THE END Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm

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