Storm Surge in the Florida Keys

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Local Storm Surge Considerations: Florida Keys Examining the role of a complex coastline in storm surge evolution Jon Rizzo Warning Coordination Meteorologist National Weather Service – Florida Keys 1315 White Street, Key West, FL 33040 http://weather.gov (305) 295-1316 x223 [email protected] http://weather.gov/keywest 4 Rules Not to Live By… …in the Florida Keys • “The coral reef protects us from damaging storm surge.” • “The storm surge flooding is worst when the winds and weather are the worst .” • “Storm surge only comes from the [ ocean / bay ] side!” Bathymetry of the Florida Keys Coastal Waters (meters) 1935 – The Labor Day Hurricane 1935 “Labor Day” Hurricane Max. Envelope of Water Category 5 – Northwest 15 mph MEOW 1935 Storm Surge • Maximum Water Levels 20 to 25 feet • Calculated Storm Surge plus Wave Set yields 18.7 feet at Lower Matecumbe Key • Shoreline wave height and wave run-up may be significant in very small, intense hurricanes Hurricane Wilma - 2005 KEY WEST, FLORIDA VACA KEY (MARATHON, FLORIDA) Key West Elevation Map Key West Inundation Estimate 3:00 AM EDT Wilma – October 24, 2005 3:00 AM to 5:00 AM EDT Category One Hurricane Force Key West Airport Winds from Key Flooded…phone lines West to Marathon out to weather sensors Storm Tide 4.5 feet inundates south half of “New Town” Key West Key West Inundation Estimate 7:00 to 9:00 AM EDT Wilma – October 24, 2005 7:00 through 9:00 AM EDT Rain ends…and winds now below Tropical Storm Force in Key West… …good weather for photographs? Wilma – October 24, 2005 1100 AM EDT Waters begin to recede in Key West… …but severe flooding from the north shore is occurring 50 miles up the road in Marathon Wilma – October 24, 2005 100 PM EDT Flooding abating in Key West… but U.S. 1 flooded for 21 miles U.S. 1 begins to flood from Marathon to at the Conch Key “18-Mile Stretch” Local Storm Surge Considerations: Florida Keys Examining the role of a complex coastline in storm surge evolution Jon Rizzo Warning Coordination Meteorologist National Weather Service – Florida Keys 1315 White Street, Key West, FL 33040 http://weather.gov (305) 295-1316 x223 [email protected] http://weather.gov/keywest.

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