Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 95, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 29, 2004, 8:48 PM EDT for Palm Beach County, Florida. It was in force for 57 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 29, 2004, 8:48 PM EDT (00:48 UTC)
- Expired
- Aug 29, 2004, 9:45 PM EDT
- In force
- 57 min
- Issued by
- NWS Miami, FL
- Area
- Counties, with a storm outline in the text
County Palm Beach County, FL
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 00:00Z, 0.8 hours before the alert went out and 116 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
- 1770 J/kg
- Mixed-layer CIN
- -21 J/kg
- Mixed-layer LCL
- 1070 m above ground
- 0-6 km bulk shear
- 11 kt
- 0-1 km storm-relative helicity
- 5 m²/s²
- 0-3 km storm-relative helicity
- 15 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 300048 CCA SVRMIA FLC099-300145- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING...CORRECTION NATIONAL WEATHER SERVICE MIAMI FL 844 PM EDT SUN AUG 29 2004 LOCATION CORRECTION THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN PALM BEACH COUNTY IN SOUTH FLORIDA. * UNTIL 945 PM EDT * AT 844 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING DIME SIZE HAIL JUST SOUTH OF PAHOKEE ...MOVING NORTHEAST AT 20 MPH. * THE STORM WILL AFFECT... PAHOKEE BY 845 PM EDT. CANAL POINT BY 855 PM EDT. 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 2676 8073 2673 8070 2688 8056 2691 8061 $$ JR
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 29, 1:15 PM EDT, 7 hours 33 minutes earlier.
Area forecast discussion, Aug 29, 1:15 PM EDT, 7 hours 33 minutes before
SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 115 PM EDT SUN AUG 29 2004 .DISCUSSION...THE PROBLEM WE HAVE IN THIS CYCLE IS HURRICANE FRANCES. BECAUSE OF THE LATEST TPC/HPC GUIDANCE WHICH WAS FROM 15UTC HAVE HAD TO INCREASE THE WINDS IN THE FRIDAY THROUGH THE WEEKEND PERIOD. WE ARE LIMITED TO 30 KNOTS IN THESE PERIODS FOR SUSTAINED WINDS. HAVE ALSO INCREASED THE RAIN PROBABILITY BECAUSE OF THE DAY 5-7 FRANCES TRACK. UNFORTUNATELY AT THIS TIME THESE GRIDDED CONDITIONS SHOULD STILL BE VIEWED AS UNCERTAIN. OR TO A CERTAIN EXTENT CAN BE IGNORED SINCE A RELATIVELY LITTLE ERROR IN FRANCES WILL GIVE A BIG ERROR IN WHAT WE HAVE PUT IN THE GRIDS. WHEN THE DATA FROM THE RECON AND NOAA PLANES GET INTO THE 30/OOUTC MODEL RUNS WE SHOULD HAVE A BETTER INDICATION OF THE STRENGTH OF THE UPPER ATLANTIC RIDGE AND THE POSSIBLE TRACK OF THE STORM. IN THE TIME UNTIL THE APPROACH OF FRANCES OR BETWEEN NOW AND FRIDAY WE SHOULD SEE LITTLE IN DAY TO DAY CHANGES. WE SHOULD REMAIN MAINLY IN A VERY WEAK SURFACE PRESSURE PATTERN WHICH WILL PROBABLY BE MORE OF A TROUGH THAN A RIDGE. SO WE SHOULD CONTINUE WITH LITTLE CHANGE UNTIL THE HURRICANE STARTS ITS IMPACT. && .MARINE...BOATING SHOULD BE GOOD THROUGH THE WEEK. THEN BY LATE WEEK REGARDLESS OF THE EVENTUAL FRANCES TRACK WE SHOULD SEE DETERIORATING BOATING ESPECIALLY IN THE ATLANTIC. && .FIRE WEATHER...NO CONCERNS. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 76 91 77 91 / 10 40 20 30 FORT LAUDERDALE 78 91 79 90 / 10 40 20 30 MIAMI 78 91 79 91 / 10 40 20 30 NAPLES 77 90 75 91 / 05 30 20 20 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. &&
Hazardous weather outlook, Aug 29, 10:15 AM EDT, 10 hours 33 minutes before
HAZARDOUS WEATHER OUTLOOK...UPDATED NATIONAL WEATHER SERVICE MIAMI FL 1015 AM EDT SUN AUG 29 2004 FLZ063-066>075-292200- BROWARD METROPOLITAN-DADE METROPOLITAN-EASTERN COLLIER-GLADES-HENDRY- MAINLAND MONROE-PALM BEACH EASTERN-PALM BEACH WESTERN- WESTERN BROWARD-WESTERN COLLIER-WESTERN DADE- 1015 AM EDT SUN AUG 29 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA. .DAY ONE...TODAY ...SCATTERED AFTERNOON THUNDERSTORMS EAST COAST AND INTERIOR... SCATTERED THUNDERSTORMS WILL DEVELOP THIS AFTERNOON AND WILL FAVOR THE INTERIOR AND ATLANTIC COAST PORTIONS OF SOUTH FLORIDA. LIGHTNING, LOCAL DOWNPOURS, AND GUSTY WINDS ARE POSSIBLE. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY. HURRICANE FRANCES IS FORECAST TO MOVE WEST-NORTHWEST INTO THE CENTRAL BAHAMAS BY LATE THURSDAY. INTERESTS IN SOUTH FLORIDA SHOULD MONITOR THE LATEST ADVISORIES ON THIS HURRICANE OVER THE NEXT SEVERAL DAYS AS FRANCES APPOACHES THE BAHAMAS. COMPREHENSIVE WEATHER FORECASTS, GRAPHICS, AND PREPAREDNESS INFORMATION CAN BE FOUND ON OUR WEB SITE AT MIAMIWEATHER.INFO. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY. HANDEL
In the hours before
Special weather statement, Aug 29, 8:31 PM EDT, 17 minutes before
SIGNIFICANT WEATHER ALERT NATIONAL WEATHER SERVICE MIAMI FL 831 PM EDT SUN AUG 29 2004 FLZ067-300130- PALM BEACH WESTERN- 831 PM EDT SUN AUG 29 2004 STRONG THUNDERSTORMS HAVE MOVED INTO WESTERN PALM BEACH COUNTY AND WILL MOVE NORTHEAST AT 10 MPH. THESES THUNDERSTORMS WILL CROSS U S 27 AND MOVE INTO OKEELANTA AND BELLE GLADE AREA OVER THE NEXT HALF HOUR. VERY HEAVY RAIN AND ALMOST CONTINOUS LIGHTNING WILL ACCOMPANY THESE THUNDERSTORMS. EXPECT FREQUENT LIGHTNING...GUSTY WINDS TO 50 MPH...PEA-SIZED HAIL... AND TORRENTIAL DOWNPOURS CAN BE EXPECTED. A WARNING WILL BE ISSUED IF THIS THUNDERSTORM ACTIVITY STRENGTHENS. THE MAIN IMPACT WILL BE FREQUENT LIGHTNING. TREES AND OPEN SHELTERS FOUND ON BEACHES OR GOLF COURSES OFFER NO PROTECTION. GET INDOORS NOW
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 29, 8:44 PM EDT | Severe Thunderstorm Warning | MFL | Palm Beach | 61 min |
| Aug 29, 8:46 PM EDT | Special Marine Warning | MFL | 59 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.