Strong outflow from a severe thunderstorm spread south across the Lower Florida Keys. Two severe thunderstorm wind gusts were measured at Cudjoe Key.
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS KEY wrote it up.
Strong outflow from a severe thunderstorm spread south across the Lower Florida Keys. Two severe thunderstorm wind gusts were measured at Cudjoe Key.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Key West, FL wrote its last area forecast discussion before the first event at Apr 11, 1:50 AM EST, 25 minutes earlier.
AREA FORECAST DISCUSSION FOR THE FLORIDA KEYS NATIONAL WEATHER SERVICE KEY WEST FL 250 AM EDT WED APR 11 2007 .DISCUSSION... .CURRENTLY... OUTFLOW BOUNDARY FROM EARLIER CONVECTION OVER SOUTH FLORIDA IS HOLDING TOGETHER...AND IS ANALYZED IN A GENERALIZED ORIENTATION FROM THE NORTHERN KEYS THROUGH FLORIDA BAY...TO THE WATERS JUST NORTH OF THE LOWER KEYS...AND THEN FURTHER SOUTHWEST TO THE WATERS WEST OF KEY WEST. A NUMBER OF MARINE WARNINGS/STATEMENTS HAVE BEEN ISSUED OVER THE PAST FEW HOURS FOR THE WATERS NORTH OF THE KEYS. SEVERE WARNING FOR LOWER AND MIDDLE KEYS JUST RECENTLY RELEASED. .FORECASTS... A ZONE UPDATE WAS SENT EARLIER THIS MORNING TO SIGNIFICANTLY INCREASE THE RAIN PROBABILITY AND STRONG THUNDERSTORM CHANCE FOR THE REMAINDER OF THE OVERNIGHT PERIOD. FORECAST CONCENTRATION IS CONFINED TO THE SHORT TERM...AND THE ONLY ADJUSTMENTS FROM THE PREVIOUS ZONE ISSUANCES WILL BE REFINED RAIN CHANCES...THUNDERSTORM EXPECTATIONS AND WIND POTENTIAL OVER THE NEXT SEVERAL HOURS. PRELIMINARY THINKING IS TO HAVE HIGH CHANCE/LIKELY SHOWER POPS AND CHANCE TSTMS THROUGH THE EARLY MORNING HOURS...AND THEN DROP THE GRIDS BACK TO CHANCE SHOWERS/ISOLD TSTMS FROM MID-MORNING ONWARD. ANY OTHER ADJUSTMENTS FROM PREVIOUS GRIDS...TEMPS/WIND GUSTS/WAVE HEIGHTS/ETC...WILL BE AS A RESULT OF THESE SHORT TERM CONVECTIVE CONCERNS. && .MARINE... BOATERS SHOULD KEEP TUNED TO THE LATEST STATEMENTS AND ANY ADDITIONAL WARNINGS CONCERNING STRONG THUNDERSTORMS EARLY THIS MORNING IN ALL WATERS SURROUNDING THE KEYS. BEYOND THE SHORT TERM CONCERNS...MAINLY THE EARLY TO MID-MORNING HOURS OF TODAY...NO ADVISORY OR CAUTIONARY STATEMENTS ARE EXPECTED THROUGH THE BALANCE OF THE FORECAST. EXPECT GENTLE TO MODERATE...MAINLY SOUTH OR SOUTHEASTERLY...BREEZES THROUGH SUNDAY. && .AVIATION... THIS MORNING...A SHORT WAVE TROUGH IN COMBINATION WITH A SURFACE FRONTAL BOUNDARY WILL CONTINUE TO MIGRATE EASTWARD ACROSS THE FLORIDA KEYS. SCATTERED TO NUMEROUS SHOWERS AND SCATTERED STRONG THUNDERSTORM THROUGH ABOUT 10Z ACROSS MUCH OF THE ROUTE. SOME STORMS COULD BE SEVERE. THEREAFTER...MORE STRATIFORM-TYPE AREAS OF LIGHT TO MODERATE RAINFALL. PILOTS...THERE ARE ACTIVE AIRMETS AND SIGMETS IN PLACE ALONG THE KMIA-KEYW TWEB ROUTE. && .PRELIMINARY POINT TEMPS/POPS... KEY WEST 82 75 82 76 / 70 40 30 20 MARATHON 84 74 84 76 / 70 40 30 20 && .KEY WATCHES/WARNINGS/ADVISORIES...NONE. && PUBLIC/MARINE/FIRE/DIGITAL.......MR AVIATION/NOWCASTS................DAF CONVECTIVE WARNINGS/STATEMENTS...BS/SD
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE KEY WEST FL 445 PM EDT TUE APR 10 2007 FLZ076-077-078-GMZ031-032-033-052-053-054-072-073-074-075-111000- MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS- FLORIDA BAY-GULF SIDE OF THE LOWER KEYS OUT 20 NM- GULF WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM OUT- OCEAN REEF TO CRAIG KEY OUT 20 NM- CRAIG KEY TO THE WEST END OF THE 7 MILE BRIDGE OUT 20 NM- WEST END OF THE 7 MILE BRIDGE TO KEY WEST OUT 20 NM- OCEAN REEF TO CRAIG KEY 20 TO 60 NM OUT- CRAIG KEY TO THE WEST END OF THE 7 MILE BRIDGE 20 TO 60 NM OUT- WEST END OF THE 7 MILE BRIDGE TO KEY WEST 20 TO 60 NM OUT- KEY WEST TO 20 NM WEST OF DRY TORTUGAS OUT 60 NM...INCLUDING THE FLORIDA KEYS NATIONAL MARINE SANCTUARY- 445 PM EDT TUE APR 10 2007 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS WILL AFFECT THE KEYS...AS WELL AS NEARSHORE AND OFFSHORE WATERS SURROUNDING THE ISLAND CHAIN TONIGHT. THE STRONGEST STORMS WILL PRODUCE WIND GUSTS NEAR 35 KNOTS...DANGEROUS CLOUD TO SURFACE LIGHTNING STRIKES...AND BRIEF...HEAVY RAIN... TEMPORARILY REDUCING THE VISIBILITY TO NEAR ONE MILE. .DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY ISOLATED THUNDERSTORMS WILL AFFECT THE KEYS...AS WELL AS NEARSHORE AND OFFSHORE WATERS SURROUNDING THE ISLAND CHAIN WEDNESDAY AND WEDNESDAY NIGHT. THE STRONGEST STORMS WILL PRODUCE WIND GUSTS NEAR 30 KNOTS...FREQUENT CLOUD TO SURFACE LIGHTNING STRIKES...AND BRIEF...HEAVY RAIN...TEMPORARILY REDUCING THE VISIBILITY TO NEAR TWO MILES. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME THURSDAY THROUGH MONDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. BS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KEY WEST FL 1135 PM EDT TUE APR 10 2007 FLZ076-110430- MONROE UPPER KEYS- 1135 PM EDT TUE APR 10 2007 ...VERY HEAVY SHOWERS AND STRONG THUNDERSTORMS UPPER KEYS... THROUGH 1230 AM...A FAST MOVING BOUNDARY MOVING ACROSS FLORIDA BAY AND THE UPPER KEYS WILL PRODUCE STRONG THUNDERSTORMS ACROSS THE UPPER KEYS FROM TAVERNIER TO OCEAN REEF...INCLUDING THE 18 MILE STRETCH. LOCATIONS HERE WILL RECEIVE TORRENTIAL DOWNPOURS ACCOMPANIED BY VISIBILITY LESS THAN ONE HALF MILE...WIND GUSTS BETWEEN 35 AND 45 MPH...OCCASIONAL YET DEADLY CLOUD TO GROUND LIGHTNING STRIKES...AND THE POSSIBILITY OF SMALL HAIL. USE EXTREME CAUTION DRIVING ON THE OVERSEAS HIGHWAY AND THE 18 MILE STRETCH DUE TO PONDING OF WATER AND POOR VISIBILITY. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM YOUR NATIONAL WEATHER SERVICE. FUTTERMAN
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KEY WEST FL 218 AM EDT WED APR 11 2007 FLZ076-110700- MONROE UPPER KEYS- 218 AM EDT WED APR 11 2007 ...STRONG THUNDERSTORMS TO IMPACT THE UPPER KEYS... THROUGH 300 AM...A CLUSTER OF STRONG THUNDERSTORMS WILL IMPACT THE UPPER KEYS...FROM KEY LARGO TO OCEAN REEF. RESIDENTS IN THE UPPER KEYS SHOULD BE PREPARED FOR WIND GUSTS NEAR 45 MPH...TORRENTIAL DOWNPOURS...AND DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM YOUR NATIONAL WEATHER SERVICE. BS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE KEY WEST FL 255 AM EDT WED APR 11 2007 FLZ076-110800- MONROE UPPER KEYS- 255 AM EDT WED APR 11 2007 ...HEAVY THUNDERSTORMS CONTINUING ACROSS THE UPPER KEYS... THROUGH 400 AM...CLUSTERS OF THUNDERSTORMS WILL CONTINUE TO MOVE ACROSS A GOOD PORTION OF THE UPPER KEYS FROM THE FLORIDA BAY AND THE MAINLAND. RESIDENTS FROM OCEAN REEF TO CRAIG KEY SHOULD BE PREPARED FOR WIND GUSTS NEAR 45 MPH...TORRENTIAL DOWNPOURS...AND DANGEROUS CLOUD TO GROUND LIGHTNING STRIKES WITHIN THESE CLUSTERS OF STORMS. LISTEN FOR LATER STATEMENTS AND POSSIBLE WARNINGS FROM YOUR NATIONAL WEATHER SERVICE. FUTTERMAN
The Key West radar (KBYX), 22 km away, was scanning. The volume nearest the first event began at 07:15 UTC.
2 thunderstorm wind. Local standard time, as filed.
A wind gust of 62 mph was recorded at the U.S. Air Force Aerostat Facility on the north side of Cudjoe Key. Two trees were downed on the grounds of the facility.
A wind gust of 61 mph was measured during a severe thunderstorm at Cudjoe Key, along the south shore of Cudjoe Bay.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2007Every state in 2007This day in weather historyWarnings in Florida, April 2007
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 28985, 28986.