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The History, Structure, Development, and Destruction Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm
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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
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In which direction does a hurricane rotate? COUNTERCLOCKWISE Is the barometric pressure inside the hurricane high or low? LOW
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June 1 st through November 31st
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Provides weather information, such as data from satellites Responsible for issuing watches and warnings to the media and general public
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What is the difference between a Hurricane Watch and a Hurricane Warning? Watch – Tropical storm poses a threat to coastal areas with 36 hours Warning - Tropical storm conditions are expected in a coastal area within 24 hours
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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
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Heat Energy evaporating from the ocean surface Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hyd/evap.rxml
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Source: http://hurricanes.noaa.gov/prepare/structure.htm
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TTropical Disturbance Group of thunderstorms in the tropics that are present for at least 24 hours TTropical Wave lack of circulation, winds <25 mph and every direction TTropical Depression closed circulation but disorganized, winds at least 25 mph
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Tropical Storm Shower and thunderstorm moves over closed circulation, winds greater than 39 mph Hurricane Eye is developed, winds > 74 mph
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Source: http://ww2010.atmos.uiuc.edu/(Gh)/guides/mtr/hurr/stages/home.rxml
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Wind Speed Barometric Pressure
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Saffir-Simpson Scale CategoryMax Wind Speed (mph) Min. Surface Pressure (mb) Storm Surge m (ft) 174-96> 9801-1.7 (3-5) 297-111979-9651.8-2.6 (6-8) 3112-131964-9452.7-3.8 (9-12) 4132-155944-9203.9-5.6 (13-18) 5> 155< 920> 5.7 (>19) Source: http://kids.earth.nasa.gov/archive/hurricane/saffir-simpson.html
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Winds Flooding Storm Surge
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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
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Strong vertical winds Cold water Movement over land Friction Lack of moisture
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1. Hurricane Andrew – 1992 2. Hurricane Hugo – 1989 3. Hurricane Fran – 1996 4. Hurricane Opal – 1995 5. Hurricane Frederic - 1979
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DDamage is a result of development TThere are more developed areas and possessions than in the past Source: http://www.nhc.noaa.gov/1992andrew.html
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1. Galveston – 1900 2. Southeast Florida – 1928 3. Florida Keys – 1919 4. New England – 1938 5. Florida Keys – 1935
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Lack of instrumentation to predict and track storms People were not warned of the incoming danger Source: http://www.1900storm.com/photographs/photo10.html Results of the Galveston Hurricane
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ArthurHannaOmar BerthaIsidorePaloma CristobalJosephineRene DollyKyleSally EdouardLiliTeddy FayMarcoVicky GustavNanaWilfred Source: http://www.hurricanewarning.net/coordinates.html
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Damage to your house from wind? Damage from flooding? Destroyed vacation house? Damage to family members’ homes?
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http://cindi.usgs.gov/cindi/hazard/event/floyd/ncflood/mediums/img023.jpg Final Water Level Flooding of Tar River as result of Hurricanes Dennis and Floyd Dockside Tar River Estates
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Extensive Flooding Extended Power outages Flood Related Deaths Property Damage US 264 Bridge Source: http://cindi.usgs.gov/cindi /hazard/event/floyd/ncflood/ mediums/img022.jpg
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Source: http://www.guc.com/about/floyd.htm
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LListen to warnings TTake all warnings seriously FFollow evacuations PPrepare Food and Water for extensive power outages
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Source: http://www.dc.peachnet.edu/~pgore/students/w97/matheson/hpage.htm THE END
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