An upper level low over the northeastern Gulf of Mexico along with moist southerly flow over South Florida produced afternoon thunderstorms across the region.
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.
An upper level low over the northeastern Gulf of Mexico along with moist southerly flow over South Florida produced afternoon thunderstorms across the region.
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 Sep 21, 2:20 PM EST, 40 minutes earlier.
AREA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 320 PM EDT FRI SEP 21 2007 .DISCUSSION...AT 19Z...NUMEROUS THUNDERSTORMS WITH SOME POSSIBLY STRONG WERE ONGOING ACROSS PALM BEACH AND GLADES AND HENDRY COUNTIES WITH MAINLY SCATTERED ACTIVITY ELSEWHERE. SATELLITE IMAGERY AND SFC OBS SHOW THAT THE SEA BREEZE HAS PUSHED INLAND ON SSE FLOW TOWARDS THE WESTERN PARTS OF THE EAST COAST METRO...AND THE WEST COAST SEA BREEZE HAS PUSHED WELL INLAND OF THE WEST COAST...HOWEVER ANOTHER AREA OF CONVECTION IS POISED OFF THE SW FL COAST AND SHOULD MOVE ONSHORE ACROSS THE COLLIER AND MAINLAND MONROE COAST THROUGH THE EARLY EVENING HOURS. FOR TONIGHT...EXPECT DIURNAL CONVECTIVE ACTIVITY TO DIMINISH OVER THE MAINLAND THIS EVENING AS DAYTIME HEATING AND INSTABILITY IS LOST. FOCUS THEN TURNS TO LARGE AREA OF CONVECTION OVER THE FL STRAITS AND CUBA...AND WATER VAPOR IMAGERY INDICATES THAT THIS CONVECTION IS ASSOCIATED WITH A MID-LEVEL MOISTURE SURGE MOVING NORTH IN BETWEEN THE LARGE UPPER LEVEL CIRCULATION IN THE NORTHERN GULF ASSOCIATED WITH TD 10...AND AN UPPER RIDGE OVER THE NW CARIBBEAN. NOT SURE HOW MUCH OF THIS CONVECTION WILL SURVIVE INTO SOUTH FL TONIGHT...BUT HAVE LEFT SCATTERED POPS FOR ALL AREAS TO ACCOUNT FOR THIS POSSIBILITY. THE AFOREMENTIONED MOISTURE SURGE FROM THE CARIBBEAN WILL ALLOW PWATS TO INCREASE EVEN FURTHER...WITH VALUES OVER 2.15 INCHES INDICATED THROUGH SUNDAY BY BOTH THE NAM AND GFS. SATURDAY IS A LIGHT FLOW DAY THROUGH THE MID LEVELS AS A DEEP-LAYERED RIDGE BUILDS OVER THE MID ATLANTIC STATES...BUT THE EASTERLY FLOW REGIME DOES NOT STRENGTHEN UNTIL LATER IN THE DAY. THEREFORE IT APPEARS THAT WIDESPREAD THUNDERSTORMS ARE LIKELY TOMORROW FROM LATE MORNING THROUGH EARLY EVENING...WITH PERHAPS SLIGHTLY MORE COVERAGE THAN TODAY AS SEA BREEZES SHOULD BE SLOWER TO MOVE INLAND. THE EAST FLOW KICKS IN FOR SUNDAY AND INCREASES IN STRENGTH...BUT WITH LOTS OF MOISTURE LEFT OVER STILL EXPECT AT LEAST SCATTERED MIDDAY ACTIVITY ACROSS THE EAST BEFORE THE SEA BREEZE MOVES INLAND...WITH HIGHEST POPS INTERIOR AND WEST COAST. GFS SLOWLY MOVES THE DEEP-LAYERED RIDGE INTO THE WESTERN ATLANTIC THROUGH MID WEEK...WHICH KEEPS SOUTH FL IN A DEEP EASTERLY/SOUTHEASTERLY FLOW REGIME AND RETURNS US TO A MORE TYPICAL CONVECTIVE PATTERN WITH MORNING/MIDDAY ACTIVITY EAST AND AFTERNOON ACTIVITY MAINLY INTERIOR AND WEST. && .AVIATION...VICINITY TSRA ALL TERMINALS INTO EARLY EVENING AS ACTIVITY REGENERATES ALONG STALLED SEA BREEZE BOUNDARY ACROSS THE WEST METRO AND MOVES NNE...AND OTHER STORMS OVER THE GULF MOVE ONTO THE FL WEST COAST. KEPT VICINITY SHRA GOING ALL NIGHT AS ACTIVITY MAY MOVE UP FROM THE SOUTH AFTER DARK. EXPECT PERIODIC MVFR OR LOWER CONDITIONS WITH BRIEF GUSTY SFC WINDS AT ALL TERMINALS THROUGH EARLY EVENING WITH CONVECTIVE ACTIVITY. && .MARINE...WINDS 10 TO 15 KNOTS GULF AND AROUND 10 KNOTS ATLANTIC WATERS TONIGHT WITH SEAS GENERALLY 2-4 FEET. GULF WINDS AND ALL SEAS DECREASE TO 3 FEET OR LESS AS EASTERLY FLOW REGIME TAKES OVER TOMORROW AND TD 10 PULLS FURTHER AWAY FROM THE AREA. && .FIRE WEATHER...NO CONCERNS AT THIS TIME AS LOW LEVEL MOISTURE REMAINS HIGH. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 78 88 80 88 / 30 70 40 50 FORT LAUDERDALE 80 88 81 90 / 30 60 40 50 MIAMI 79 89 80 90 / 40 60 40 50 NAPLES 75 91 74 92 / 30 70 50 60 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && STRASSBERG
HAZARDOUS WEATHER OUTLOOK FOR SOUTH FLORIDA NATIONAL WEATHER SERVICE MIAMI FL 1118 AM EDT FRI SEP 21 2007 FLZ063-066>075-168-172>174-220315- GLADES-HENDRY-INLAND PALM BEACH-METRO PALM BEACH-COASTAL COLLIER- INLAND COLLIER-INLAND BROWARD-METRO BROWARD-INLAND MIAMI DADE- METRO MIAMI DADE-MAINLAND MONROE-COASTAL PALM BEACH- COASTAL BROWARD-COASTAL MIAMI DADE-FAR SOUTH MIAMI DADE- 1115 AM EDT FRI SEP 21 2007 ...A FEW WEAK TORNADOES POSSIBLE THIS AFTERNOON... ...SCATTERED TO NUMEROUS THUNDERSTORMS EXPECTED THIS AFTERNOON... THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...THIS AFTERNOON AND TONIGHT THUNDERSTORMS: SCATTERED TO NUMEROUS THUNDERSTORMS ARE EXPECTED ACROSS ALL OF MAINLAND SOUTH FLORIDA AND THE ADJACENT COASTAL WATERS TODAY BUT WITH THE MOST ACTIVE LOCATIONS ACROSS THE INTERIOR AND EAST COAST METROPOLITAN REGION. OCCASIONAL LIGHTNING STRIKES, LOCALLY HEAVY RAINS AND WIND GUSTS TO 30 MPH CAN BE EXPECTED IN THE STRONGEST STORMS. TORNADOES: COUNTERCLOCKWISE ROTATION AROUND NEWLY FORMED SUBTROPICAL DEPRESSION TEN IN THE NORTHEAST GULF OF MEXICO WILL RESULT IN A POSSIBLE BRIEF WEAK TORNADO THIS AFTERNOON. THE PRIMARY THREAT FOR THIS ACTIVITY WILL BE OVER THE INTERIOR PORTIONS OF SOUTH FLORIDA NEAR LAKE OKEECHOBEE AND THE EASTERN METROPOLITAN COAST. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY SCATTERED THUNDERSTORMS ARE EXPECTED TO OCCUR EACH DAY THROUGH THE PERIOD. LIGHTNING STRIKES AND LOCALLY HEAVY RAINFALL WILL BE THE MAIN IMPACTS FROM THE STORMS. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION MAY BE REQUESTED THIS AFTERNOON. FOR MORE INFORMATION...VISIT THE NATIONAL WEATHER SERVICE IN MIAMI WEBSITE AT WWW.WEATHER.GOV/MIAMI.
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 1241 PM EDT FRI SEP 21 2007 FLZ066-211715- HENDRY FL- 1241 PM EDT FRI SEP 21 2007 ...STRONG THUNDERSTORM MOVING ACROSS THE AREA... AT 1238 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM 5 MILES SOUTH OF LA BELLE...MOVING NORTH AT 15 MPH. THIS STORM WILL AFFECT... LA BELLE... AND SURROUNDING COMMUNITIES. FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. ALSO...THIS STORM IS DEVELOPING IN AN ENVIRONMENT FAVORABLE FOR BRIEF WEAK TORNADOES. LAT...LON 2677 8149 2677 8129 2662 8139 2664 8151 TIME...MOT...LOC 1641Z 195DEG 14KT 2669 8143 KOB
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 152 PM EDT FRI SEP 21 2007 FLZ072-172-211815- METRO BROWARD COUNTY FL-COASTAL BROWARD COUNTY FL- 152 PM EDT FRI SEP 21 2007 ...STRONG THUNDERSTORM MOVING ACROSS THE AREA... AT 150 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STRONG THUNDERSTORM NEAR COOPER CITY...MOVING NORTHEAST AT 20 MPH. THIS STORM WILL AFFECT... COOPER CITY... DAVIE... DOWNTOWN-DAVIE... INTERSECTION I-595 AND I-95... LAUDERHILL... AND SURROUNDING COMMUNITIES. FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. ALSO...THIS STORM IS DEVELOPING IN AN ENVIRONMENT FAVORABLE FOR TORNADOS. LAT...LON 2626 8029 2620 8012 2598 8017 2600 8039 TIME...MOT...LOC 1752Z 206DEG 20KT 2606 8026 KOB
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE MIAMI FL
300 PM EDT FRI SEP 21 2007
FLZ067-211930-
INLAND PALM BEACH COUNTY FL-
300 PM EDT FRI SEP 21 2007
...STRONG THUNDERSTORMS MOVING ACROSS THE AREA...
AT 257 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED
STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM NORTH PALM BEACH
GENERAL AIRPORT TO 7 MILES SOUTHEAST OF PAHOKEE...MOVING NORTHEAST AT
20 MPH.
THESE STORMS WILL AFFECT...
CALOOSA...
AND SURROUNDING COMMUNITIES.
FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED
HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE.
LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES
AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN
DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL
OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES.
LAT...LON 2695 8058 2694 8021 2689 8020 2668 8026
2667 8064
TIME...MOT...LOC 1900Z 203DEG 20KT 2690 8027 2678 8055
KOBSPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 338 PM EDT FRI SEP 21 2007 FLZ067-212015- INLAND PALM BEACH COUNTY FL- 338 PM EDT FRI SEP 21 2007 ...STRONG THUNDERSTORMS MOVING ACROSS NORTHERN INTERIOR PALM BEACH COUNTY... AT 335 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM CANAL POINT TO 7 MILES WEST OF NORTH PALM BEACH GENERAL AIRPORT...MOVING NORTH AT 10 MPH. THESE STORMS WILL AFFECT... CALOOSA... AND SURROUNDING COMMUNITIES. FREQUENT TO EXCESSIVE LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED HAIL...TORRENTIAL DOWNPOURS...OR A COMBINATION OF THESE ARE POSSIBLE. LIGHTNING IS THE NUMBER ONE WEATHER RELATED KILLER IN FLORIDA. TREES AND OPEN SHELTERS OFFER NO PROTECTION. WIND GUSTS OF UP TO 50 MPH CAN DOWN SMALL TREE LIMBS AND BRANCHES...AND BLOW AROUND UNSECURED SMALL OBJECTS. SEEK SHELTER IN A SAFE BUILDING UNTIL THE STORM PASSES. RESIDENTS NEAR THE PATH OF THESE STORMS SHOULD REMAIN ON THE ALERT FOR ADDITIONAL STATEMENTS AND POSSIBLE WARNINGS. STAY TUNED TO NOAA WEATHER RADIO AND OTHER LOCAL MEDIA FOR FURTHER DETAILS OR UPDATES. LAT...LON 2696 8061 2695 8022 2679 8024 2685 8063 TIME...MOT...LOC 1938Z 190DEG 12KT 2692 8059 2688 8033 BAXTER
The Miami radar (KAMX), 63 km away, was scanning. The volume nearest the first event began at 20:01 UTC.
1 lightning. Local standard time, as filed.
A maintenance building in Lauderhill was destroyed by a fire believed to have been caused by lightning. The 2,000 square foot building was a total loss.
Witnesses reported seeing lightning and looked outside to see the building on fire.
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, September 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: 62214.