A surface trough moving across South Florida along with a strong shortwave trough caused severe thunderstorms to affect Miami-Dade County on the morning of April 12th. Wind gusts of 45 to 55 mph were recorded at several locations from Kendall to Cutler Bay and Key Biscayne, with one report of 60 mph winds in the Perrine/Palmetto Bay area.
Every event with a place to put it. Tap one for its entry below.
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 MFL wrote it up.
A surface trough moving across South Florida along with a strong shortwave trough caused severe thunderstorms to affect Miami-Dade County on the morning of April 12th. Wind gusts of 45 to 55 mph were recorded at several locations from Kendall to Cutler Bay and Key Biscayne, with one report of 60 mph winds in the Perrine/Palmetto Bay area.
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 Miami, FL wrote its last area forecast discussion before the first event at Apr 12, 7:46 AM EST, 2 hours 14 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 846 AM EDT THU APR 12 2007 .UPDATE...INCREASED POPS AND SKY COVER THIS FOR THIS MORNING ACROSS SOUTH FLORIDA AND FOR THE COASTAL WATERS SINCE THE SQUALL LINE IS STILL PUSHING ACROSS THE AREA AND DOESNT APPEAR TO BE WEAKENING TOO MUCH. FOR THIS AFTERNOON WITH THE EXTRA SKY COVER AND PRECIP TWEAKED TEMPS DOWN A FEW DEGREES BUT STILL BASICLY IN THE SAME CATEGORY. ALSO FOR THIS AFTERNOON, MODEL GUIDANCE GENERALLY DOES NOT HAVE THAT GOOD OF A HOLD ON THE CURRENT SITUATION WITH THE SQUALL LINE SO GUIDANCE MAY BE OFF ON TRENDING TOWARD SEA BREEZE CONVECTION ALONG THE EAST COAST THIS AFTERNOON, BUT ON THE OTHER HAND, RAIN FROM THE SQUALL LINE MAY STILL BE LINGERING ACROSS THE SOUTHERN TIP OF FLORIDA INTO THE AFTERNOON SO KEPT POPS AS IS FOR THIS AFTERNOON / EARLY EVENING. AFTER THIS EVENING THE REST OF THE FORECAST LOOKS ON TARGET AND NO OTHER CHANGES WERE MADE. && .PREV DISCUSSION... /ISSUED 346 AM EDT THU APR 12 2007/ DISCUSSION...STRONG SHORTWAVE MOVING THROUGH THE GREAT LAKES REGION WITH ASSOCIATED SFC TROUGH ACROSS CENT FLA. THIS GENERATED AN MCS THAT MOVED ACROSS CENT FLA DURING THE NIGHT WITH CONTINUED CONVECTION ALONG THE TROUGH AXIS OVER THE EASTERN GOFMEX. ALL OF THIS WILL MOVE TO S FLA TODAY AND WITH SW STEERING FLOW AHEAD OF THE TROUGH THIS WILL SET THE STAGE FOR ABUNDANT CONVECTIVE ACTIVITY ESPECIALLY ALONG THE E CST. IN ADDITION, GPS SATELLITE PWAT ESTIMATES OVER 1.75 INCHES OVER THE SE GULF AND FCST SOUNDINGS INDICATED THIS AIRMASS OVER S FLA BY 18Z. THIS WELL ABOVE APRIL NORMS AND SO WILL ALSO ADD WORDING OF LOCALLY HEAVY RAINFALL TO THE SE ZONES. THE MCS ALSO SENT OUT AN OUTFLOW BOUNDARY THAT MOVED S OF LAKE OKEE AND THIS WILL BE ANOTHER FOCUSING MECHANISM FOR INITIATION OF CONVECTION. THE TROUGH WILL MOVE OFF THE E CST THIS EVENING SO THERE MAY BE SOME LINGERING CONVECTION EARLY IN THE EVENING BUT ALL MODELS THEN SHOW MUCH DRIER AIR ALOFT MOVING ACROSS THE REGION ON FRIDAY SO WILL HAVE ONLY HAVE SILENT POPS IN THE GRIDS. THE GFS CONTINUES TO SHOW ANOTHER STRONG SHORTWAVE DIGGING INTO THE SE U.S. ON SATURDAY AND SENDING A COLD FRONT THROUGH S FLA ON SUNDAY. THE TIMING OF THE FRONT IS STILL IN QUESTION AS THE GFS FROM RUN TO RUN MOVES IT ACROSS THE REGION EARLY SUNDAY TO LATE SUNDAY. AT ANY RATE, A LINE OF MOISTURE WILL ACCOMPANY THE FRONT AND LOOKS LIKE THERE MAY BE ENOUGH DYNAMICS THAT I HAVE ADDED THE MENTION OF ISOLATED TSRA. MUCH COOLER AND DRIER AIR THEN FOR NEXT WEEK WITH AN EXTENDED SPELL OF NW TO W WINDS AND DEW POINTS ONLY IN THE 50S. AVIATION...VFR CONDITIONS WILL PREVAIL UNDER CLEAR SKIES EARLY THIS MORNING...BUT CLOUDS WILL INCREASE THROUGHOUT THE DAY ALONG WITH SCATTERED CONVECTION BREAKING OUT. KEPT VCSH IN FOR THE MORNING HOURS...AND VCTS FOR THE AFTERNOON ALONG WITH PREVAILING VFR CONDITIONS SINCE AM EXPECTING THIS TO BE THE RULE. HOWEVER...THERE LIKELY WILL BE SHRA/TSRA AROUND THE AREA THIS AFTERNOON ESPECIALLY ALONG THE EAST COAST...BUT DUE TO UNCERTAINTIES IN TIMING OPTED TO KEEP SHRA/TSRA AS VCNTY FOR NOW. MARINE...WINDS WILL BE SW AT LESS THAN 15 KT TODAY AND THEN VEER RAPIDLY TO THE NE AND E ON FRIDAY AS HIGH PRESSURE BUILDS BEHIND THE TROUGH. A COLD FRONT WILL MOVE THROUGH THE S FLA WTRS ON SUNDAY WITH WINDS VEERING TO THE SE AHEAD OF THE FRONT AND THEN NW BEHIND IT. SO SEAS WILL BE LESS THAN 5 FEET THROUGH SUNDAY AND THEN BUILD IN THE GULF STREAM TO 7 FEET EARLY NEXT WEEK. FIRE WEATHER...NO PROBLEMS OR CONCERNS IN THE SHORT TERM. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 88 70 84 71 / 50 30 - - FORT LAUDERDALE 87 71 85 75 / 70 30 - - MIAMI 87 72 86 72 / 70 30 - - NAPLES 85 66 88 69 / 50 20 - - && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && LONG TERM...30/KOB SHORT TERM/AVIATION...57/DG UPDATE...TINGLER
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA NATIONAL WEATHER SERVICE MIAMI FL 1100 AM EDT THU APR 12 2007 FLZ063-066>075-122300- GLADES-HENDRY-PALM BEACH WESTERN-PALM BEACH EASTERN- WESTERN COLLIER-EASTERN COLLIER-WESTERN BROWARD- BROWARD METROPOLITAN-WESTERN DADE-DADE METROPOLITAN- MAINLAND MONROE- 1100 AM EDT THU APR 12 2007 ...A FEW STRONG STORMS POSSIBLE TODAY... ...LOCALLY HEAVY RAINFALL POSSIBLE ATLANTIC COAST IN THE AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY AND TONIGHT THUNDERSTORMS: SCATTERED TO NUMEROUS THUNDERSTORMS ARE FORECAST TO AFFECT MAINLAND SOUTH FLORIDA TODAY. THUNDERSTORMS WILL AFFECT THE GULF COAST DURING THE EARLY MORNING HOURS WITH STORMS DEVELOPING ALONG THE ATLANTIC COAST MID TO LATE MORNING AND INTO THE AFTERNOON. SOME OF THE STORMS COULD BECOME STRONG WITH FREQUENT LIGHTNING, GUSTY WINDS, SMALL HAIL AND VERY HEAVY DOWNPOURS. WIND: THE STRONGEST STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS OF 40 TO 50 MPH. HAIL: SMALL HAIL IS POSSIBLE IN THE STRONGEST STORMS TODAY. FLOODING: AN UNSEASONABLY HIGH AMOUNT OF MOISTURE IN THE ATMOSPHERE TODAY WILL LEAD TO THE POTENTIAL FOR LOCALLY HEAVY RAINFALL, ESPECIALLY ACROSS THE PALM BEACH, BROWARD, AND MIAMI-DADE METROPOLITAN AREAS. SEVERAL INCHES OF RAIN COULD FALL IN A SHORT PERIOD OF TIME...POSSIBLY LEADING TO MINOR URBAN FLOODING AT ISOLATED LOCATIONS. .DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY THUNDERSTORMS ARE POSSIBLE ON SUNDAY AS A COLD FRONT MOVES ACROSS THE AREA. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI. PS
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 640 AM EDT THU APR 12 2007 FLZ063-066-069-070-121130- HENDRY FL-GLADES FL-EASTERN COLLIER FL-WESTERN COLLIER FL- 640 AM EDT THU APR 12 2007 ...STRONG STORMS MOVING INTO GLADES...HENDRY...AND COASTAL COLLIER COUNTIES... AT 638 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES WEST OF VENUS TO 20 MILES WEST OF MARCO ISLAND...OR 13 MILES NORTHWEST OF PALMDALE...MOVING EAST AT 20 MPH. THE STRONGEST STORMS WITHIN THE LINE WILL AFFECT PALMDALE AND LA BELLE...BUT OTHER STRONG STORMS WILL MOVE IN FROM OFF THE COAST TO AFFECT AREAS BETWEEN NAPLES AND MARCO ISLAND. GUSTY WINDS TO 40 MPH AND PEA SIZED HAIL HAVE OCCURRED WITHIN THIS LINE OF STORMS AS IT PASSED BY CAPE CORAL. EXPECT FREQUENT LIGHTNING...GUSTY WINDS TO 40 MPH...PEA-SIZED HAIL...AND TORRENTIAL DOWNPOURS. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. GREGORIA
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 820 AM EDT THU APR 12 2007 FLZ070-071-121330- EASTERN COLLIER-WESTERN BROWARD- INCLUDING THE CITIES OF...IMMOKALEE... MICCOSUKEE INDIAN RESERVATION 820 AM EDT THU APR 12 2007 ...STRONG STORMS OVER CENTRAL COLLIER COUNTY... THROUGH 930 AM...A CLUSTER OF STORM STORMS WILL MOVE EAST AT 25 MPH AND DOPPLER RADAR CONTINUES TO INDICATE POSSIBLE WIND GUSTS TO 30 TO 40 MPH OVER ALLIGATOR ALLEY. THIS ACTIVITY WILL MOVE INTO WESTERN BROWARD COUNTY SHORTLY. ALSO EXPECT DANGEROUS LIGHTNING AND BRIEF HEAVY RAINFALL.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 1020 AM EDT THU APR 12 2007 FLZ072>074-121530- BROWARD METROPOLITAN-WESTERN DADE-DADE METROPOLITAN- INCLUDING THE CITIES OF...FORT LAUDERDALE...SHARK VALLEY...MIAMI 1020 AM EDT THU APR 12 2007 ...STRONG THUNDERSTORMS MOVING INTO METRO AREAS OF BROWARD AND MIAMI-DADE COUNTIES... STRONG THUNDERSTORMS WILL MOVE THROUGH BROWARD COUNTY THROUGH 1045 AM AND WILL MOVE THROUGH MIAMI-DADE BY 11 AM. THIS ACTIVITY WILL PRODUCE DANGEROUS LIGHTNING STRIKES, WIND GUSTS TO 35 MPH AND BRIEF VERY HEAVY DOWNPOURS.
The Miami radar (KAMX), 6 km away, was scanning. The volume nearest the first event began at 14:58 UTC.
1 thunderstorm wind. Local standard time, as filed.
Amateur radio antenna tower bent and blown over.
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: 27946.