Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 92, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 23, 2004, 12:41 PM EDT for Broward County, Florida. It was in force for 49 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
- Aug 23, 2004, 12:41 PM EDT (16:41 UTC)
- Expired
- Aug 23, 2004, 1:30 PM EDT
- In force
- 49 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), 47 km from the middle of the area, began a volume at 16:45 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, 4.7 hours before the alert went out and 23 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
- 843 J/kg
- Mixed-layer CIN
- -32 J/kg
- Mixed-layer LCL
- 933 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- -1 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 231641 SVRMIA FLC011-231730- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 1241 PM EDT MON AUG 23 2004 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN BROWARD COUNTY IN SOUTH FLORIDA. * UNTIL 130 PM EDT * AT 1241 PM EDT...TRAINED WEATHER SPOTTERS REPORTED A STORM CAPABLE OF PRODUCING DAMAGING WINDS OVER PEMBROKE PINES. THE STORM WAS NEARLY STATIONARY. * THE STORM WILL AFFECT... NORTH PERRY AIRPORT BY 1240 PM EDT. DAVIE BY 1255 PM EDT. PEMBROKE PINES BY 125 PM EDT. INTERSECTION U.S. 27 PINES BLVD BY 130 PM EDT. SEVERE THUNDERSTORMS CAN PRODUCE DAMAGING WINDS IN EXCESS OF 60 MPH...DAMAGING HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAINFALL. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. THIS STORM HAS THE POTENTIAL TO CAUSE SERIOUS INJURY AND SIGNIFICANT DAMAGE TO PROPERTY. LAT...LON 2598 8019 2608 8020 2611 8052 2597 8047 $$ EC
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 Aug 23, 10:25 AM EDT, 2 hours 16 minutes earlier.
Area forecast discussion, Aug 23, 10:25 AM EDT, 2 hours 16 minutes before
SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 1025 AM EDT MON AUG 23 2004 .UPDATE...THE MORNING LCOAL SURFACE ANALYSIS SHOWS HIGH PRESSURE CENTERED OVER SOUTH FLORIDA. 12Z LOCAL SOUNDING AND MORNING ACARS DATA SHOW VERY LIGHT WINDS THROUGH MID LEVELS. SCATTERED SHOWERS AND A FEW THUNDERSTORMS ARE POPPING UP ON RADAR OFF KEY LARGO AND MOVING SLOWLY NORTHWEST INTO SOUTH MIAMI-DADE COUNTY. TODAYS FORECAST REASONING IN LINE WITH PREVIOUS DISCUSSION. MESOSCALE FORCES WILL AGAIN BE MAIN INTIGATORS THROUGH LATE AFTERNOON. THE LACK OF STEERING FLOW WILL MEAN EAST COAST SEA BREEZE WILL NOT PENETRATE VERY DEEPLY...OPENING MORE OF THE METRO AREAS TO CONVECTION. WILL UPDATE FORECAST IN BIT TO CLEAN UP MORNING WORDING. NO CHANGES PLANNED OTHERWISE. EC .PREVIOUS DISCUSSION...VERY LIGHT WINDS BOTH AT THE SURFACE AND ALOFT AS FLORIDA REMAINS IN THE MIDST OF A WEAKNESS IN THE MID LEVEL RIDGE EXTENDING ACROSS THE ATLANTIC AND GULF OF MEXICO. IT NOW APPEARS THAT THE TROUGH OVER FLORIDA WILL REMAIN MORE OF A FACTOR OVER THE NEXT FEW DAYS. WIND BELOW 600MB TURNING A BIT MORE OUT OF THE SOUTHWEST, AND BY TUESDAY IT SHOULD BE OUT OF THE WEST. THIS WOULD BE JUST ENOUGH OF A PUSH TO SUPPORT LIKELY POPS RIGHT UP TO THE ATLANTIC COAST...AND PERHAPS GIVE THE IMMEDIATE GULF COAST A LITTLE REPRIEVE BY TUESDAY. BOOSTED POPS TODAY AND TOMORROW TO JUST SLIGHTLY ABOVE OPERATIONAL ETA/GFS GUIDANCE. CONSIDERING THAT PWAT STAYS ABOVE 2 INCHES AND WEAK TROUGH IN THE VICINITY OF SOUTH FLORIDA, THE OPERATIONAL GFS RUN SEEMS MORE REASONABLE THAN THE DRIER ENSEMBLE MEMBERS. NOT MUCH CHANGE THROUGH THE ENTIRE WEEK AS THE UPPER LEVEL AND SURFACE PATTERN APPEARS STAGNANT. && .MARINE...LOW SEAS AND LIGHT WINDS WILL BE THE RULE FOR THE NEXT WEEK OUT ON THE AREA WATERS. && .MFL WATCHES/WARNINGS/ADVISORIES... FL...FLOOD WARNING UNTIL 11 AM EDT FOR ZONE 63. AM...NONE. GM...NONE. && RRH
Hazardous weather outlook, Aug 23, 4:25 AM EDT, 8 hours 16 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 425 AM EDT MON AUG 23 2004 FLZ063-066>075-232200- BROWARD METROPOLITAN-DADE METROPOLITAN-EASTERN COLLIER-GLADES-HENDRY- MAINLAND MONROE-PALM BEACH EASTERN-PALM BEACH WESTERN- WESTERN BROWARD-WESTERN COLLIER-WESTERN DADE- 425 AM EDT MON AUG 23 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY ...NUMEROUS SHOWERS AND THUNDERSTORMS THROUGH THIS AFTERNOON... NUMEROUS SHOWERS AND THUNDERSTORMS ARE EXPECTED TO DEVELOP OVER OVER MOST OF SOUTH FLORIDA TODAY. THESE SHOWERS AND STORMS WILL MOVE SLOWLY EAST NORTHEAST UNDER A LIGHT SOUTHWESTERLY STEERING FLOW. THE SLOW MOVEMENT COULD RESULT IN LOCALLY HEAVY RAINFALL. WIND GUSTS UP TO 30 MPH AND CLOUD TO GROUND LIGHTNING STRIKES ARE ALSO TO BE 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...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
In the hours before
Special weather statement, Aug 23, 12:17 PM EDT, 24 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE MIAMI FL 1217 PM EDT MON AUG 23 2004 FLZ068-072-074-231645- BROWARD METROPOLITAN-DADE METROPOLITAN-PALM BEACH EASTERN- 1217 PM EDT MON AUG 23 2004 ...STRONG THUNDERSTORMS FORMING NEAR HOLLYWOOD... AT 1217 PM...NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS FORMING INLAND OF U.S. HIGWAY ONE FROM FORT LAUDERDALE TO HIALEAH. THE STRONGEST THUNDERSTORM ACTIVITY IS DEVELOPING BETWEEN CAROL CITY AND HOLLYWOOD. MOVEMENT IS VERY SLOW TO THE WEST...MAKING RAINFALL HEAVY. EXPECT FREQUENT LIGHTNING...GUSTY WINDS TO 50 MPH...AND TORRENTIAL DOWNPOURS. A WARNING WILL BE ISSUED IF THIS THUNDERSTORM ACTIVITY STRENGTHENS.
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.