Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 99, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Sep 19, 2004, 5:26 PM EDT for Broward County, Florida. It was in force for 64 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Sep 19, 2004, 5:26 PM EDT (21:26 UTC)
- Expired
- Sep 19, 2004, 6:30 PM EDT
- In force
- 64 min
- Issued by
- NWS Miami, FL
- Area
- Counties, with a storm outline in the text
County Broward County, FL
The radar
The Miami radar (KAMX), 66 km from the middle of the area, began a volume at 21:26 UTC, the scan nearest the moment this went out.
Open the radar archive at this moment
The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.
Did it verify
Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.
Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 9.4 hours before the alert went out and 50 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.
- Mixed-layer CAPE
- 1761 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 790 m above ground
- 0-6 km bulk shear
- 4 kt
- 0-1 km storm-relative helicity
- 1 m²/s²
- 0-3 km storm-relative helicity
- -3 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS52 KMFL 192126 SVRMIA FLC011-192230- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 524 PM EDT SUN SEP 19 2004 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL BROWARD COUNTY IN SOUTH FLORIDA. * UNTIL 630 PM EDT * AT 524 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING DIME SIZE HAIL...AND DAMAGING WINDS OVER CENTRAL BROWARD COUNTY...MOVING SOUTH AT 10 MPH. * THE STORM WILL AFFECT... RURAL CENTRAL BROWARD COUNTY INTERSTATE 75 ALLIGATOR ALLEY AT 545 PM SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. LAT...LON 2632 8051 2629 8071 2601 8070 2600 8050 $$ DG/RRH
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, 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 this severe thunderstorm warning went out at Sep 19, 2:12 PM EDT, 3 hours 14 minutes earlier.
Area forecast discussion, Sep 19, 2:12 PM EDT, 3 hours 14 minutes before
SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 212 PM EDT SUN SEP 19 2004 .DISCUSSION...COLD FRONT OVER SOUTH FLORIDA THIS AFTERNOON. SEABREEZE AND FRONTAL CONVERGENCE RESULTING IN BEST THUNDERSTORM COVERAGE OVER WESTERN MIAMI-DADE AT THE MOMENT. THIS ACTIVITY WILL EVER SO SLOWLY DRIFT INTO THE EVERGLADES OF DADE AND MONROE COUNTIES THIS AFTERNOON. OTHER MORE ISOLATED CONVECTION EXPECTED ACROSS THE REST OF THE FORECAST AREA. EXPECT A BREAK IN THE PRECIPITATION OVERNIGHT. SHOULD SEE BEGINNING OF INCREASINGLY SCATTERED SHOWERS MOVING INTO SOUTH FLORIDA AS A CHUNK OF MOISTURE ASSOCIATED WITH THE WEATHER DISTURBANCE FORMERLY KNOWN AS IVAN REACHES FLORIDA. VISIBLE SATELLITE SHOWS LARGE AREA OF STRATO-CU SURGING SOUTHWESTWARD. THE LAST 2 DAYS WORTH OF GFS MODEL RUNS HAVE CONSISTENTLY SHOWED THIS FEATURE ARRIVING IN SOUTH FLORIDA MONDAY. LATEST INCARNATION INCLUDES WEAK SURFACE LOW DEVELOPMENT ALONG THE PREVIOUSLY MENTIONED FRONT WHICH WILL REMAIN IN THE AREA TOMORROW. DECIDED TO INCREASE POPS TO 40 PERCENT FOR MUCH OF THE EAST COAST TOMORROW (EMPHASIZING BEST CHANCES AT THE COAST AND NEARER TO PALM BEACH). AFTER THAT THE NORTHEAST WIND REGIME SETTLES IN FOR THE LONG HAUL...WHICH WILL BE MORE OF A MARINE/BEACH ISSUE (SEE BELOW). && .MARINE...A LARGE RIDGE OF HIGH PRESSURE WILL REMAIN ALONG THE ATLANTIC SEABOARD THROUGH THE WEEK. THIS WILL LIKELY BRING NORTHEAST SWELL TO THE SOUTHEAST FLORIDA COAST...PARTICULARLY ON TUESDAY AND WEDNESDAY. EXPECT THE SURFERS TO BE OUT ENJOYING IT. RIP CURRENTS LIKELY TO BE A BIG PROBLEM THROUGH MUCH OF THE WEEK AS WIND REMAINS NORTHEAST AT 10 TO 15 KNOTS ALONG WITH THE SWELL COMPONENT. WELL HAVE TO REMIND SWIMMERS OF THE DANGERS POSED BY THE SURF. MINOR BEACH EROSION ALSO A POSSIBILITY UP ALONG THE PALM BEACH COAST. AT THIS POINT...DONT THINK COMBINED SEAS WILL EXCEED 10 FEET AT THE COAST...BUT WILL MONITOR THE SITUATION. && .FIRE WEATHER...NO CONCERNS ALTHOUGH SLIGHTLY DRIER AIR IS INFILTRATING SOUTH FLORIDA. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 74 85 75 87 / 20 40 30 30 FORT LAUDERDALE 74 86 75 88 / 20 40 30 30 MIAMI 76 89 77 89 / 20 40 30 30 NAPLES 73 87 72 90 / 00 30 20 30 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. && HANDEL
Hazardous weather outlook, Sep 19, 4:08 AM EDT, 13 hours 18 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 408 AM EDT SUN SEP 19 2004 FLZ068-072-074-192200- BROWARD METROPOLITAN-DADE METROPOLITAN-PALM BEACH EASTERN- 408 AM EDT SUN SEP 19 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY ...ISOLATED THUNDERSTORMS THIS MORNING ALONG EAST COAST... A SURFACE BOUNDARY EXTENDING FROM PALM BEACH COUNTY SOUTHWEST TO MAINLAND MONROE COUNTY WILL SLOWLY SINK SOUTH TODAY. SOUTH OF THIS BOUNDARY, THERE COULD BE A FEW THUNDERSTORMS THAT DEVELOP WITH PRIMARY WIND GUSTS UP TO 30 MPH, LOCALLY HEAVY RAINFALL, AND CLOUD TO GROUND LIGHTNING STRIKES. THE THREAT OF THUNDERSTORMS SHOULD COME TO AN END BY EARLY THIS AFTERNOON...AS THE EAST COAST SEA BREEZE PUSHES INLAND AND THE BOUNDARY SINKS TO THE SOUTHERN TIP OF SOUTH FLORIDA. IF YOU SEE LIGHTNING OR HEAR THUNDER MOVE INSIDE UNTIL THE STORMS HAVE PASSED. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ADDITIONAL INFORMATION AND DETAILED GRAPHICS CAN BE FOUND ON THE NATIONAL WEATHER SERVICE WEB SITE AT MIAMIWEATHER.INFO. FOR INFORMATION IN SPANISH, VISIT OUR WEB SITE AT ELTIEMPOENMIAMI.INFO. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. ...RIP CURRENTS POSSIBLE EAST COAST MONDAY THROUGH FRIDAY... ...HIGH SURF TUESDAY THROUGH FRIDAY PALM BEACH COAST... HIGH PRESSURE WILL BUILD OVER THE NORTHEAST UNITED STATES THROUGH MIDDLE OF NEXT WEEK, AS TROPICAL STORM JEANNE MOVES NORTHWARD TO JUST NORTHEAST OF THE NORTHERN BAHAMAS ISLANDS. THIS SHOULD ALLOW FOR NORTHEAST SWELLS TO BUILD INTO THE ATLANTIC WATERS OF SOUTH FLORIDA MONDAY THROUGH FRIDAY, AND ALLOW FOR HIGH SURF CONDITIONS TO AFFECT THE PALM BEACH COAST BY TUESDAY. THE WINDS WILL ALSO BE FROM THE NORTHEAST DIRECTION AT 10 TO 15 MPH THIS WEEK ALLOWING FOR RIP CURRENTS TO DEVELOP ALONG ALL OF THE EAST COAST BEACHES OF SOUTH FLORIDA. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. FLZ073-075-192200- MAINLAND MONROE-WESTERN DADE- 408 AM EDT SUN SEP 19 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY ...ISOLATED THUNDERSTORMS OVER SOUTH INTERIOR AREAS TODAY... A SURFACE BOUNDARY EXTENDING FROM PALM BEACH COUNTY SOUTHWEST TO MAINLAND MONROE COUNTY WILL SLOWLY SINK SOUTH TODAY. SOUTH OF THIS BOUNDARY, THERE COULD BE A FEW THUNDERSTORMS THAT DEVELOP WITH PRIMARY WIND GUSTS UP TO 30 MPH, LOCALLY HEAVY RAINFALL, AND CLOUD TO GROUND LIGHTNING STRIKES. IF YOU SEE LIGHTNING OR HEAR THUNDER MOVE INSIDE UNTIL THE STORMS HAVE PASSED. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. ADDITIONAL INFORMATION AND DETAILED GRAPHICS CAN BE FOUND ON THE NATIONAL WEATHER SERVICE WEB SITE AT MIAMIWEATHER.INFO. FOR INFORMATION IN SPANISH, VISIT OUR WEB SITE AT ELTIEMPOENMIAMI.INFO. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. FLZ063-066-067-069>071-192200- EASTERN COLLIER-GLADES-HENDRY-PALM BEACH WESTERN-WESTERN BROWARD- WESTERN COLLIER- 408 AM EDT SUN SEP 19 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY NO HAZARDOUS WEATHER IS EXPECTED. ADDITIONAL INFORMATION AND DETAILED GRAPHICS CAN BE FOUND ON THE NATIONAL WEATHER SERVICE WEB SITE AT MIAMIWEATHER.INFO. FOR INFORMATION IN SPANISH, VISIT OUR WEB SITE AT ELTIEMPOENMIAMI.INFO. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED. BAXTER
In the hours before
Local storm report, Sep 19, 4:18 PM EDT, 1 hour 8 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
418 PM EDT SUN SEP 19 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0414 PM TORNADO EAST NAPLES 26.14N 81.74W
09/19/2004 COLLIER FL LAW ENFORCEMENT
LAW ENFORCEMENT REPORTED 3 TORNADOES ON THE GROUND NEAR
STATE ROAD 82 AND TAMIAMI TRAIL.
&&
HANDELLocal storm report, Sep 19, 4:43 PM EDT, 43 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE MIAMI FL
443 PM EDT SUN SEP 19 2004
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION...ST.. ...SOURCE....
..REMARKS..
0425 PM TORNADO 2 E BELLE MEADE 26.05N 81.67W
09/19/2004 COLLIER FL LAW ENFORCEMENT
SIGNIFICANT DAMAGE REPORTED BY COLLIER COUNTY SHERIFF
NEAR IMPERIAL WILDERNESS. ADDITIONAL FUNNEL WAS FORMING.
&&
HANDELThe office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 19, 10:26 AM EDT | Special Marine Warning | MFL | 64 min | |
| Sep 19, 3:18 PM EDT | Special Marine Warning | MFL | 57 min | |
| Sep 19, 3:55 PM EDT | Special Marine Warning | MFL | 65 min | |
| Sep 19, 4:10 PM EDT | Severe Thunderstorm Warning | MFL | Collier | 65 min |
| Sep 19, 4:15 PM EDT | Tornado Warning | MFL | Collier | 60 min |
| Sep 19, 4:56 PM EDT | Special Marine Warning | MFL | 64 min |
Nearby
Severe Thunderstorm Warnings in Florida, 2004Every severe thunderstorm warning in 2004
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.