Alert archive / Florida / Severe Thunderstorm Warnings in 2004
Severe Thunderstorm Warning 87, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at Aug 16, 2004, 4:32 PM EDT for Palm Beach County, Florida. It was in force for 43 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 16, 2004, 4:32 PM EDT (20:32 UTC)
- Expired
- Aug 16, 2004, 5:15 PM EDT
- In force
- 43 min
- Issued by
- NWS Miami, FL
- Area
- Counties, with a storm outline in the text
County Palm Beach County, FL
The radar
The Miami radar (KAMX), 122 km from the middle of the area, began a volume at 20:36 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, 8.5 hours before the alert went out and 100 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
- 1037 J/kg
- Mixed-layer CIN
- -48 J/kg
- Mixed-layer LCL
- 1082 m above ground
- 0-6 km bulk shear
- 3 kt
- 0-1 km storm-relative helicity
- -20 m²/s²
- 0-3 km storm-relative helicity
- -13 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 162032 SVRMIA FLC099-162115- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 430 PM EDT MON AUG 16 2004 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL PALM BEACH COUNTY IN SOUTH FLORIDA. * UNTIL 515 PM EDT * AT 430 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A STORM CAPABLE OF PRODUCING NICKEL SIZE HAIL...AND DAMAGING WINDS OVER CENTRAL PALM BEACH COUNTY. THE STORM WAS NEARLY STATIONARY. * THE STORM WILL AFFECT... RURAL NORTHERN AND CENTRAL PALM BEACH COUNTY 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. FREQUENT LIGHTNING IS OCCURRING WITH THIS THUNDERSTORM. IF OUTDOORS...STAY AWAY FROM ISOLATED HIGH OBJECTS SUCH AS TREES AND AVOID WATER. MOVE INDOORS OR INSIDE A VEHICLE IF POSSIBLE. AVOID USING THE TELEPHONE UNLESS IT IS AN EMERGENCY. TRY TO UNPLUG UNNECESSARY ELECTRICAL APPLIANCES BEFORE THE THUNDERSTORM APPROACHES. LAT...LON 2675 8035 2687 8050 2666 8063 2649 8054 $$ DG
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 16, 1:56 PM EDT, 2 hours 36 minutes earlier.
Area forecast discussion, Aug 16, 1:56 PM EDT, 2 hours 36 minutes before
SOUTH FLORIDA FORECAST DISCUSSION NATIONAL WEATHER SERVICE MIAMI FL 156 PM EDT MON AUG 16 2004 .DISCUSSION...NORMAL SUMMER PATTERN HAS SETTLED IN ACROSS SOUTH FLORIDA. OVER THE COMING WEEK...HIGH PRESSURE WILL REMAIN ALOFT AND A RIDGE WILL RESIDE JUST TO THE NORTH. LIGHT EAST/SOUTHEAST FLOW WILL PICK UP A BIT BY THE WEEKEND AS TROPICAL WAVE PASSES TO THE SOUTH. OTHER THAN THAT...NOT MUCH CHANGE EXPECTED THROUGH THE FORECAST PERIOD. DAY TO DAY SUBTLE CHANGES IN MESOSCALE FEATURES WILL DICTATE TIMING AND PLACEMENT OF SHOWERS AND STORMS. WITH PRECIPITABLE WATER EXPECTED TO BE A BIT BELOW NORMAL...WILL KEEP POPS ABOUT 10 PERCENT OR SO BELOW CLIMO. SHOULD SEE A COUPLE OF SHOWERS OR STORMS OVERNIGHT INTO EARLY MORNING EAST COAST ZONES...AFTERNOON/EVENING STORMS INLAND PORTIONS OF EAST COAST METRO AREAS WESTWARD TO THE WEST COAST SEABREEZE. TEMPERATURES WILL BE RIGHT ABOUT NORMAL...WHICH MEANS HEAT INDICES EACH DAY FROM 100 TO 110...COASTAL TO FAR INTERIOR RESPECTIVELY. && .MARINE...WINDS WILL REMAIN MOSTLY EAST/SOUTHEAST AT 15 KNOTS OR LESS THROUGH THE WEEKEND. && .FIRE WEATHER...NO PROBLEMS/CONCERNS. && .PRELIMINARY POINT TEMPS/POPS... WEST PALM BEACH 78 90 78 90 / 20 30 20 30 FORT LAUDERDALE 80 89 80 90 / 20 20 20 20 MIAMI 80 90 80 90 / 20 30 20 30 NAPLES 76 91 76 91 / 20 40 30 50 && .MFL WATCHES/WARNINGS/ADVISORIES... FL...NONE. AM...NONE. GM...NONE. &&
Hazardous weather outlook, Aug 16, 12:55 PM EDT, 3 hours 37 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE MIAMI FL 1255 PM EDT MON AUG 16 2004 THIS HAZARDOUS WEATHER OUTLOOK IS FOR SOUTH FLORIDA FLZ063-066>075-162200- BROWARD METROPOLITAN-DADE METROPOLITAN-EASTERN COLLIER-GLADES-HENDRY- MAINLAND MONROE-PALM BEACH EASTERN-PALM BEACH WESTERN- WESTERN BROWARD-WESTERN COLLIER-WESTERN DADE- 1255 PM EDT MON AUG 16 2004 .DAY ONE...TODAY ...MODERATE RISK OF LIGHTNING MAINLY INTERIOR... ...HEAT INDEX 100 TO 105 ALONG GULF AND ATLANTIC COAST... ...HEAT INDEX 105 TO 110 INTERIOR... SCATTERED THUNDERSTORMS WILL DEVELOP ALONG THE EAST AND WEST COAST SEA BREEZES AND MOVE TO THE NORTHWEST. SOME DRYING OF THE UPPER ATMOSPHERE HAS OCCURRED AND THIS HAS RESULTED IN THE THREAT FOR A FEW STORMS TO BECOME STRONG OVER THE INTERIOR SECTIONS OF SOUTH FLORIDA. THE THREAT WILL BE FOR STRONG SURFACE WINDS OF 35 TO 45 MPH TO OCCUR WITH THESE STORMS. IN ADDITION, TEMPERATURES IN THE LOWER 90S NEAR THE COAST, TO SOME MID 90S INLAND, COMBINED WITH RELATIVE HUMIDITY, WILL PRODUCE HEAT INDEX VALUES OF 100 TO 105 AT THE COAST WITH 105 TO 110 HEAT INDEX READINGS IN THE INTERIOR. NO OTHER 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...TUESDAY THROUGH SUNDAY. NO OTHER HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED.
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.