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Tropical Cyclones Chapter 11

Tropical Cyclones Chapter 11. Meteorology 1010 Professor Bunds Utah Valley University. Tropical Cyclone Naming, Paths and Seasons. typhoons. hurricanes. cyclones. Paths of All Tropical Cyclones 1985 - 2005. Hurricane Air Flow. Upper Level Hurricane Air Flow. Hurricane Rankings.

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Tropical Cyclones Chapter 11

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  1. Tropical CyclonesChapter 11 Meteorology 1010 Professor Bunds Utah Valley University

  2. Tropical Cyclone Naming, Paths and Seasons typhoons hurricanes cyclones

  3. Paths of All Tropical Cyclones 1985 - 2005

  4. Hurricane Air Flow

  5. Upper Level Hurricane Air Flow

  6. Hurricane Rankings

  7. Hurricane Formation • Powered largely by warm water • Hurricanes are most common late summer to fall – ‘hurricane season’ • Varies by region • Weaken over land • Usually weaken as they approach coastline also • Form near but not over equator, given proper conditions (next slide)

  8. Ingredients for Hurricane Formation • Warm water – at least 80oF • Relatively cool air at altitude • Relatively moist air at moderate altitude (3 miles up) • At least 300 miles from the equator • Little wind shear between surface and upper air (6 miles up) • Divergence aloft • A trigger – e.g., big thunderstorms

  9. Hurricane Hazards • Storm Surge • On average, the biggest threat to life and property • Winds • Flooding from extreme precipitation • Can cause major problems far inland

  10. Galveston Hurricane, 1900> 10,000 fatalities,worst natural disaster in U.S. history

  11. Storm Surge

  12. Tropical Cyclone Winds & Storm Surge

  13. Hurricane Ike Storm SurgeSeptember 2008

  14. Hurricane Ivan 10 am Friday Link to visible loop

  15. Hurricane Ivan 10 am Friday Link to visible loop

  16. Hurricane Ivan 1:45pm Thursday

  17. Hurricane Ivan 1:45pm Thursday link to infrared loop

  18. Hurricane Ivan 9:45pm Friday link to infrared loop

  19. Hurricane Ivan 9:45pm Friday link to infrared loop

  20. Link to visible loop Link to IR loop

  21. Ivan, 9.15.04 11:15 am EDT

  22. Ivan, 9.15.04 10:45 am EDT

  23. Mississippi Delta

  24. Mississippi River Delta Active Lobe ~ 500 years old Mississippi ‘wants’ to follow course of Atchafalaya River

  25. Ivan, 9.17.04 4:15 pm EDT

  26. Hurricane Ike Storm SurgeSeptember 2008

  27. Path of hurrican and locations of tidal gauges that recorded storm surge, as shown on following slides

  28. This and following photos are of Galveston, TX, and nearby areas

  29. Houston, TX

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