1. UNDERSTANDING HURRICANESBy Linda Cannon Peoples

2. Overview This module will help you to understand abouthurricanes. 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. Menu Hurricanes defined Hurricane physical disasters Effects on humans Hurricane preparation Self test 4. Hurricanes DefinedA tropical cyclone classifications:Tropical depression max winds > 38 mphTropical storm winds 39-73mphHurricane: An intense tropical weather system of strong thunderstorms with a well-defined surface circulation and maximum sustained winds of 74 mph or higherSeason: June 1-November 30www.floridadisaster.org PreviousMenuNext 5. Hurricanes defined KatrinaPreviousMenu Next 6. Hurricanes definedSaffir-Simpson Scale & ExampleTS 39-73 mph Alberto 1995CAT 1 74-95 mph Irene 1999CAT 2 96-110 mph George 1998 ClassificationCAT 3 111-130 mph Opal 1995CategoriesCAT 4 131-155 mph Donna 1960CAT 5 155+ mph Labor Day 1935http://floridadisaster.org Previous Menu Next 7. Hurricanes definedWorld locations according tocategoryhttp://discovermagazine.com/2007/sep/map-where-do-hurricanes-do-the-most-damage/ Previous Menu Next 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 togrow. Over land and cooler waters hurricanes lose power. Near Philippines and China sea hurricanes arewww.cotf.edu/ete/modules/sevweath/swhowarePreviousMenuNext 9. Hurricanes defined Locations of typhoons vs. hurricaneshttp://spaceplace.nasa.gov/hurricanes/ PreviousMenu Next 10. Hurricane physical disastersStorm 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://floridadisaster.org Previous Menu Next 11. Hurricane physical disastersStorm surges cause greatest potential loss of life 9 of 10victims http://hurricanes.noaa.gov/prepare/surgePreviousMenuNext 12. Hurricane physical disasterswww.hurricane_katrina_flooding.jpgPrevious Menu Next 13. Hurricane physical disastersIn the last 30 years, inland flooding has beenresponsible for more than half the deathsassociated with tropical storms in the UnitedStateshttp://www.floridadisaster.org PreviousMenu Next 14. Hurricane physical disasters Hurricanes can produce tornadoes Tornados most likely to occur in the right-frontquadrant of the hurricane May also be found embedded in the rain bands Tornado watch/warnings issued in addition tohurricane updateswww.floridadisaster.orgwww.hurricanewarning.net/tornados Previous Menu Next 15. Hurricane physical disasterswww.weather.com/outlook/weather-news/news/articles/hurricane-inland-flood-wind-tornadoes_2011-08-10?page=3 PreviousMenuNext 16. Hurricane physical disastersDestroys:Poorly constructed buildingsMobile homesHigh Winds!Creates flying missiles Previous Menu Next 17. Hurricane physical disasters / Image 1: Hurricane Andrew. www.ihc.fiu.edu/about_us/hurricane_hazards.htmImage 2: Close-up of 1 x 4 board driven through the trunk of a royal palm (NOAA) PreviousMenuNext 18. Hurricane physical disastershttp://tamutimes.tamu.edu/files/2011/09/hurricane-winds.jpgPreviousMenuNext 19. Hurricane physical disastersCounter clock wise windshttp://wwwcache.wral.com/asset/weather/hurricanes/2006/10/23/1044515/hurricane_diagram-450x245.jpg PreviousMenuNext 20. Effects on humansStress ResponsesAnxiety DisordersCoping by Helping OthersFear Previous MenuNext 21. Effects on HumansChildren are affected every whereWe are really sad and hope this makes you feel better, said student Jackie Cantor.www.nbc5.com/news5/4914228/detail.html PreviousMenuNext 22. Effects on humansDissociation (feeling unreal, outside self)Re-experiencing, nightmares, flashbacksAvoidance/substance abuseEmotional numbingHyper-arousalSevere anxiety and or depressionLoss of hope self worth motivation purpose(National Center for PTSD 2003).Previous MenuNext 23. Effects on humans Anxiety Disorders Post Trauma, A Comparison of Symptoms Onset Disorder OnsetPost 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.PreviousMenuNext 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. PreviousMenuNext 25. Effects on humans Stress related events (North et al 2000)Previous MenuNext 26. Effects on humans PreviousMenu Nextwww.nola.com/hurricanes/photos 27. Effects on humansJim, refuses to leave.www.nola.com/hurricane/photosPrevious NextMenu 28. Hurricane preparation What can you do to prepare? Action ChecklistStay or Leave?Leave if:Local authorities recommend/mandateLive on coastline or off shoreLive in a floodplain/near riverLive in a mobile homewww.aoml.noaa.gov/general/lib.actionPreviousMenu Next 29. Hurricane preparationPre-plan evacuation route/meeting placeHave disaster supplies on handMake arrangements for petsInstruct family membersProtect windowsDevelop an emergency communication plan.http://life.familyeducation.com/hurricane/emergency/34259.htmlPreviousMenu Next 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 www.dot.state.al http://abcnews.go.cwire/US/ap20040919606Previous Menu Next 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 MetroNew Orleans Red Cross will not enter NewOrleans May cease to existhttp://www.nasa.gov/vision/earth/lookingatearth/Ivan_indid_out.html Previous Menu Next 32. Self TestRead the following multiple choice carefully.Choose only one correct answerGood Luck! MenuBegin Test 33. Question 1Some of the physical damages of hurricanes are: A. Storm surges B. Flooding C. Damaging winds D. All of the above 34. NextQuestion 35. TryAgainPlease 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. TryAgain! 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. Rock On to Question4 40. GoBack!http://tamunews.tamu.edu/wp-content/uploads/2010/10/hurricane-eye.jpg 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 hurricanes eye. 42. Go to More Fun Links 43. WrongLevels!On Many So GoBackNow! 44. Interesting Links http://environment.nationalgeographic.com/environment/natural-disasters/hurricane-profile/ http://www.ncbi.nlm.nih.gov/pmc/articles/PMC2635112/ http://www.nhc.noaa.gov/ http://www.ready.gov/hurricanes ONE MORE SLIDE! 45. Congrats! You have finished this module!!www.hsus.org