Numerous showers and thunderstorms developed over the Straits of Florida in a moist, unstable, confluent and deep southerly flow. The showers, thunderstorms and associated outflow boundaries spread rapidly north across the Florida Keys bringing and isolated severe wind gust to the southeast corner of Key West.
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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.
Numerous showers and thunderstorms developed over the Straits of Florida in a moist, unstable, confluent and deep southerly flow. The showers, thunderstorms and associated outflow boundaries spread rapidly north across the Florida Keys bringing and isolated severe wind gust to the southeast corner of Key West.
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 Jun 10, 1:47 PM EST, 6 hours earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE KEY WEST FL 247 PM EDT WED JUN 10 2015 .DISCUSSION...A DEEP LAYER SUBTROPICAL ANTICYCLONE REMAINS CENTERED OVER THE SOUTHEASTERN BAHAMAS. SKIMMING THE TOP LAYERS OF THIS RIDGE IS A TROUGH IN THE UPPER LEVELS...ITS AXIS SLICING THROUGH THE EASTERN GULF OF MEXICO. THE CURRENT VWP FROM THE KBYX RADAR SAMPLES A DEEP...SLIGHTLY VEERING PROFILE. RECENT GOES-BASED SATELLITE SOUNDINGS INDICATE SOME WARMING WITHIN THE LOWER LEVELS COMPARED TO THIS MORNING'S RAOB OBSERVATION. THE MEAN ANTICYCLONE HAS PROBABLY REACHED SOME OF ITS AXIS WESTWARD FROM THE BAHAMAS. AS SUCH...SHOWER ACTIVITY HAS WANED DUE TO INHIBITION OF VERTICAL DEVELOPMENT. THE AREA OBSERVING STATIONS DETECT MODERATE SOUTHEAST BREEZES. TEMPERATURES ARE IN THE MID TO UPPER 80S AND SKIES ARE MOSTLY HIGH CLOUDS. .SHORT TERM (TONIGHT THROUGH FRIDAY NIGHT)...THE ANTICYCLONE WILL BUILD NORTHWESTWARD TONIGHT THROUGH FRIDAY NIGHT...CULMINATING IN A SURFACE RIDGE AXIS WHICH WILL EXTEND WESTWARD INTO THE SOUTHEASTERN UNITED STATES. EAST- SOUTHEAST BREEZES WILL FRESHEN THURSDAY AFTERNOON...RESULTING IN MAINLY BREEZY CONDITIONS THURSDAY NIGHT THROUGH FRIDAY NIGHT. UNDULATIONS IN MOISTURE AND WIND SPEED WILL RESULT IN OCCASIONAL SWATHS OF SHOWERS ALONG CONVERGENT FRONTS. RAIN CHANCES HAVE BEEN CAPPED AT 30 PERCENT THROUGH THE SHORT TERM...ASIDE FROM 40 PERCENT TONIGHT WHICH ACCOUNTS FOR A LITTLE ACTION FROM CUBA. && .LONG TERM (SATURDAY THROUGH WEDNESDAY)...THE NORTHERN REACHES OF AN INVERTED TROUGH MAY INFLUENCE THE FLORIDA KEYS THIS WEEKEND...AT LEAST ACCORDING TO ONE OF THE GLOBAL MODELS. THIS CREATES A PROBLEM FOR THE WIND FORECAST. IF THERE IS NO TROUGH IN THE EASTERLIES...BREEZES WILL SLACKEN APPRECIABLY AND STEADILY THROUGH THE LONG TERM. IF THERE IS A TROUGH...THE GRADIENT WILL REMAIN TIGHT. WE HAVE TRENDED TOWARD CLIMATOLOGY IN THE GRIDDED ELEMENTS TO ACCOUNT FOR THIS UNCERTAINTY. && .MARINE...A WEAK HIGH PRESSURE AREA OVER THE WESTERN NORTH ATLANTIC AND FLORIDA PENINSULA WILL EXPAND AND INTENSIFY TONIGHT THROUGH SATURDAY. THIS WILL RESULT IN FRESHENING EAST TO SOUTHEAST BREEZES ACROSS FLORIDA KEYS COASTAL WATERS...ESPECIALLY THURSDAY AFTERNOON THROUGH FRIDAY NIGHT. BREEZES WILL GRADUALLY SLACKEN SATURDAY THROUGH MONDAY. && .AVIATION...THUS FAR INTO THE AFTERNOON...UPSTREAM CONVECTIVE ACTIVITY FROM EITHER KEY WEST OR MARATHON HAS BEEN MINIMAL. ISOLATED TO SCATTERED SHOWERS ARE POSSIBLE ESPECIALLY ALONG LOW LEVEL BOUNDARIES THIS EVENING AND OVERNIGHT. BUT AT THIS TIME...WILL CONTINUE TO ADVERTISE VFR CONDITIONS AT BOTH TERMINALS DUE TO CURRENT SATELLITE AND RADAR TRENDS. EXPECT SOUTHEAST WINDS CLOSE TO 10 KNOTS...POSSIBLY AS HIGH AS 10 TO 15 KNOTS LATER IN THE OVERNIGHT PERIOD. && .CLIMATE...ON THIS DATE IN KEYS WEATHER HISTORY...IN 1878...THE HIGH TEMPERATURE IN KEY WEST HIT 94 DEGREES. THIS SET THE DAILY HIGH TEMPERATURE RECORD FOR JUNE 10 IN KEY WEST. TEMPERATURE RECORDS FOR KEY WEST DATE BACK TO 1872. && .PRELIMINARY POINT TEMPS/POPS... KEY WEST 78 86 79 86 / 40 30 30 30 MARATHON 78 89 79 89 / 40 30 30 30 && .KEY WATCHES/WARNINGS/ADVISORIES... FL...NONE. GM...NONE. && PUBLIC/MARINE.........CLR AVIATION/NOWCASTS.....04 DATA COLLECTION.......CHESSER VISIT US ON THE WEB AT WEATHER.GOV/KEY FOLLOW US ON FACEBOOK AND TWITTER AT... WWW.FACEBOOK.COM/NWSKEYWEST WWW.TWITTER.COM/NWSKEYWEST
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE KEY WEST FL 551 AM EDT WED JUN 10 2015 FLZ076>078-GMZ031>035-042>044-052>055-072>075-111000- MONROE UPPER KEYS-MONROE MIDDLE KEYS-MONROE LOWER KEYS- FLORIDA BAY INCLUDING BLACKWATER SOUND, BUTTONWOOD SOUND, AND BARNES SOUND- BAYSIDE AND GULFSIDE FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE- GULF WATERS FROM EAST CAPE SABLE TO CHOKOLOSKEE 20 TO 60 NM OUT AND BEYOND 5 FATHOMS- GULF OF MEXICO INCLUDING DRY TORTUGAS AND REBECCA SHOAL CHANNEL- GULF OF MEXICO FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO 5 FATHOMS- HAWK CHANNEL FROM OCEAN REEF TO CRAIG KEY OUT TO THE REEF- HAWK CHANNEL FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT TO THE REEF- HAWK CHANNEL FROM WEST END OF SEVEN MILE BRIDGE TO HALFMOON SHOAL OUT TO THE REEF- STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY OUT 20 NM- STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE OUT 20 NM- STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF HALFMOON SHOAL OUT 20 NM- STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY TORTUGAS OUT 20 NM- STRAITS OF FLORIDA FROM OCEAN REEF TO CRAIG KEY 20 TO 60 NM OUT- STRAITS OF FLORIDA FROM CRAIG KEY TO WEST END OF SEVEN MILE BRIDGE 20 TO 60 NM OUT- STRAITS OF FLORIDA FROM WEST END OF SEVEN MILE BRIDGE TO SOUTH OF HALFMOON SHOAL 20 TO 60 NM OUT- STRAITS OF FLORIDA FROM HALFMOON SHOAL TO 20 NM WEST OF DRY TORTUGAS 20 TO 60 NM OUT- 551 AM EDT WED JUN 10 2015 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE FLORIDA KEYS AND ADJACENT COASTAL WATERS. .DAY ONE...TODAY AND TONIGHT ISOLATED THUNDERSTORMS ARE EXPECTED TO DEVELOP ACROSS THE FLORIDA KEYS AND ADJACENT COASTAL WATERS TODAY...WITH SCATTERED THUNDERSTORMS TONIGHT. THE PRIMARY THUNDERSTORM HAZARD WILL BE LIGHTNING STRIKES. SECONDARY HAZARDS WILL INCLUDE REDUCED VISIBILITY IN DOWNPOURS AND LOCALLY GUSTY WINDS TO NEAR 30 KNOTS. .DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY SCATTERED THUNDERSTORMS ARE EXPECTED ACROSS THE FLORIDA KEYS AND ADJACENT COASTAL WATERS THURSDAY THROUGH SUNDAY...WITH ISOLATED THUNDERSTORMS THEREAFTER. THE PRIMARY HAZARD WILL BE LIGHTNING. EAST TO SOUTHEAST BREEZES WILL FRESHEN TONIGHT THROUGH FRIDAY...AND SMALL CRAFT ADVISORIES MAY BE REQUIRED FOR SOME ZONES...ESPECIALLY FRIDAY THROUGH SATURDAY. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. KASPER
The Key West radar (KBYX), 9 km away, was scanning. The volume nearest the first event began at 00:47 UTC.
1 thunderstorm wind. Local standard time, as filed.
A wind gust of 51 knots was measured at the Key West International Airport ASOS. No damage was observed throughout the airport property.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Florida in 2015Every state in 2015This day in weather historyWarnings in Florida, June 2015
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: 592071.