1 / 56

Hurricanes

Hurricanes. Conditions Required for Formation. Warm, Humid Air (mT air mass) form over tropical oceans Warm Water; 80 F Mainly form in the Fall; off the coast of Africa. Why do Hurricanes travel from east to west?. None at the Equator!.

conan
Download Presentation

Hurricanes

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Hurricanes

  2. Conditions Required for Formation • Warm, Humid Air (mT air mass) • form over tropical oceans • Warm Water; 80 F • Mainly form in the Fall; off the coast of Africa

  3. Why do Hurricanes travel from east to west? None at the Equator!

  4. The Stages of a Hurricane(based on changes in wind speed) • Tropical Depression (L pressure system) 2. Tropical Storm- gets a name (39-74 mph) 3. Hurricane (over 74 mph)

  5. The Saffir-Simpson Hurricane Damage Scale

  6. Also Known as… • Typhoons in the western Pacific • Cyclones in Australia/Indian ocean • Hurricanes in the Atlantic

  7. 2011 Atlantic hurricane season

  8. Timeline of 2011 hurricanes

  9. Irene; cat 4 Aug. 20-2855 dead; 10 billion $ damage

  10. Katia- Aug. 25- Sept. 10; cat.4

  11. Hurricane Ophelia Sept.. 2011 cat. 4

  12. Parts of a hurricane • eye - 20-50 • light winds • Air sinking • clear/broken clouds • eye wall • very strong winds • ring of intense thunderstorms

  13. Parts of a hurricane (cont.) • Spiral Rain bands- heavy rain; wind

  14. Cross section of a hurricane Eye Wall

  15. Do Hurricanes affect Detroit? • Just rain

  16. Hurricane Damage!

  17. Hurricane Damage • due to wind and water • rains can cause flooding and mud slides • Most deaths are due to the storm surge

  18. Gulf Shores, AL (after Hurricane Ivan 2004)

  19. Power of Wind

  20. Andrew 1992

  21.                                                                   Ivan 2004

  22. Iris 1991

  23. STORM SURGE OCEAN WATER SUCKED UPWARD

  24. Katrina’s storm surge

  25. Factors Affecting Storm Surge • shape of the coastline • the magnitude of the hurricane http://www.comet.ucar.edu/nsflab/web/hurricane/313.htm

  26. What to do if a hurricane warning is issued? LEAVE THE AREA

  27. Hurricane forecasting • Satellites are most useful in detecting where hurricanes are • To predict direction they will go… • Fronts • Water temp. • Wind directions • Still fickle!

  28. Hurricane Dissolving • storm passes over cooler waters OR • storm makes landfall Once the warm water is gone so is the hurricane!

  29. What Determines What is the Worst Hurricane? Winds ?? Deaths ?? Cost ??

  30. Most Powerful Atlantic Hurricanes

  31. Wilma- Oct. 2005lowest recorded pressure= 26.04” Wilma 2005

  32. Deadliest Atlantic Hurricanes

  33. Galveston 1900-deadliest natural disaster in U.S. history

  34. Costliest Atlantic HurricanesKatrina- estimated $80 billion

  35. Andrew 1992

  36. Cost of hurricane damage is increasing because…. • More people are moving to hurricane prone areas!

  37. Hurricane Andrew The Urban Storm 15 deaths $26 billion in damage Hurricane Mitch The Rural Storm 11,000 deaths very little monetary damage So, Which is Worse?

  38. Hurricane Katrina 2005

  39. Levees broke • Added to flooding • New O. below sea level!

More Related