Hurricane power point tag 17


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Learning about hurricanes

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Hurricane power point tag 17

  1. 1. UNDERSTANDING HURRICANESBy Linda Cannon Peoples
  2. 2. Overview• This module will help you to understand about hurricanes. You will:• Define what hurricanes are• Look at physical forces and the damage• Effects on humans• And, examine an overview of preparation.• Finally, you will learn from a brief self-test.• Enjoy your learning and welcome!
  3. 3. Menu• Hurricanes defined• Hurricane physical disasters• Effects on humans• Hurricane preparation• Self test
  4. 4. Hurricanes DefinedA tropical cyclone classifications:Tropical depression max winds > 38 mphTropical storm winds 39-73mphHurricane: An intense tropical weather system of strong thunderstorms with a well-defined surface circulation and maximum sustained winds of 74 mph or higherSeason: June 1-November Previous Menu Next
  5. 5. Hurricanes defined KatrinaPrevious Menu Next
  6. 6. Hurricanes definedSaffir-Simpson Scale & ExampleTS 39-73 mph Alberto 1995CAT 1 74-95 mph Irene 1999CAT 2 96-110 mph George 1998 ClassificationCAT 3 111-130 mph Opal 1995 CategoriesCAT 4 131-155 mph Donna 1960CAT 5 155+ mph Labor Day 1935 Previous Menu Next
  7. 7. Hurricanes defined World locations according to category Previous Menu Next
  8. 8. Hurricanes defined The birth of a hurricane Begin as tropical storms over warm moist waters Moisture rises heated air is twisted in the atmosphere Winds circle counterclockwise north of equator, clockwise south of the equator. The peaceful center is called the eye. Around the center winds move 74-200+ miles an hour Moving over waters 79 degrees F causes hurricanes to grow. Over land and cooler waters hurricanes lose power. Near Philippines and China sea hurricanes are Previous Menu Next
  9. 9. Hurricanes defined Locations of typhoons vs. hurricanes Previous Menu Next
  10. 10. Hurricane physical disastersStorm Surge: is water that is pushed toward the shore by the force of the winds swirling around the storm. This advancing surge combines with the normal tides to create the hurricane storm tide, which can increase the mean water level 15 ft. or more.Http:// Previous Menu Next
  11. 11. Hurricane physical disastersStorm surges cause greatest potential loss of life 9 of 10 victims Previous Menu Next
  12. 12. Hurricane physical disasterswww.hurricane_katrina_flooding.jpg Previous Menu Next
  13. 13. Hurricane physical disastersIn the last 30 years, inland flooding has beenresponsible for more than half the deathsassociated with tropical storms in the UnitedStates Previous Menu Next
  14. 14. Hurricane physical disasters• Hurricanes can produce tornadoes• Tornados most likely to occur in the right-front quadrant of the hurricane• May also be found embedded in the rain bands• Tornado watch/warnings issued in addition to hurricane Previous Menu Next
  15. 15. Hurricane physical Previous Menu Next
  16. 16. Hurricane physical disastersDestroys:Poorly constructed buildingsMobile homes High Winds!Creates flying missiles Previous Menu Next
  17. 17. Hurricane physical disasters / Image 1: Hurricane Andrew. 2: Close-up of 1 x 4 board driven through the trunk of a royal palm (NOAA) Previous Menu Next
  18. 18. Hurricane physical disasters Previous Menu Next
  19. 19. Hurricane physical disastersCounter clock wise winds Previous Menu Next
  20. 20. Effects on humansStress ResponsesAnxiety DisordersCoping by Helping OthersFear Previous Menu Next
  21. 21. Effects on HumansChildren are affected every where “We are really sad and hope this makes you feel better, said student Jackie Cantor”. Previous Menu Next
  22. 22. Effects on humansDissociation (feeling unreal, outside self)Re-experiencing, nightmares, flashbacksAvoidance/substance abuseEmotional numbingHyper-arousalSevere anxiety and or depressionLoss of hope self worth motivation purpose(National Center for PTSD 2003). Previous Menu Next
  23. 23. Effects on humans Anxiety Disorders Post Trauma, A Comparison of Symptoms Onset Disorder Onset Post EventAcute Catastrophic Stress Disorder Few hours to days(ACSD)Worry, insomnia, heightened startleresponse, difficulty concentrating andcoping with workAcute Stress disorder (ASD) Four weeks or moreNightmares, flashbacks, hypervigilance, avoidance, loss of interest,intrusive thoughts. Previous Menu Next
  24. 24. Effects on humansPost traumatic stress Three months to yearsdisorder (PTSD)Symptoms present for at *Adapted from: APA (2000)least one month: Re- The Diagnostic andexperiencing trauma, by Statistical Manual of Mentalnightmare, flashback, Disorders, IV-Ravoidance, sleepdisturbance, irritability, poorconcentration, startlereaction, regressive behavior. Previous Menu Next
  25. 25. Effects on humans Stress related events (North et al 2000)Previous Menu Next
  26. 26. Effects on humans Previous Menu
  27. 27. Effects on humans Jim, refuses to Previous Next Menu
  28. 28. Hurricane preparation What can you do to prepare? Action Checklist Stay or Leave?• Leave if:• Local authorities recommend/mandate• Live on coastline or off shore• Live in a floodplain/near river• Live in a mobile Previous Menu Next
  29. 29. Hurricane preparation• Pre-plan evacuation route/meeting place• Have disaster supplies on hand• Make arrangements for pets• Instruct family members• Protect windows• Develop an emergency communication plan. Previous Menu Next
  30. 30. Hurricane preparation Example Good Plan  Example Poor Plan/No plan Alabama DOT  New Orleans Evacuation Route ID  Eleventh hour decisions Reversing lanes  Poor/no sheltering Emergency vehicle access  Poor co-ordination Manpower  Vertical evacuation Traffic control  No Red Cross Sequence of events  Lane reversal late Public info/sheltering  Public info late/confusion  http://abcnews.go.cwire/US/a p20040919606 Previous Menu Next
  31. 31. Preparation Essential Hurricane Ivan: Category 4 Extended 520 miles Winds up to 160 mph If hit New Orleans: Under 20 feet of water Chemical pollution 1.2 million people live in Metro New Orleans Red Cross will not enter New Orleans May cease to exist Previous Menu Next
  32. 32. Self TestRead the following multiple choice carefully.Choose only one correct answerGood Luck! Menu Begin Test
  33. 33. Question 1Some of the physical damages of hurricanes are: A. Storm surges B. Flooding C. Damaging winds D. All of the above
  34. 34. NextQuestion
  35. 35. TryAgainPlease
  36. 36. Question 2For hurricanes to form they need:A. Cool and dry watersB. Warm moist watersC. Winter like weatherD. Nothing special, they are random.
  37. 37. TryAgain!
  38. 38. Question 3An effect on humans after a hurricane can be: A. Nothing, humans cope fine. B. Post Traumatic Stress Disorder C. Schizophrenia D. Night-blindness
  39. 39. Rock On to Question 4
  40. 40. Go Back!
  41. 41. Question 4What is most important to prepare for ahurricane? A. Duck and hide B. Pre-plan, communicate with family, listen to warnings C. Ride it out D. Wait until you see the hurricane’s eye.
  42. 42. Go to More Fun Links
  43. 43. WrongLevels! On Many So Go Back Now!
  44. 44. Interesting Links• ural-disasters/hurricane-profile/••• ONE MORE SLIDE!
  45. 45. Congrats! You have finished this module!!