Alert archive / Florida / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 73, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 22, 1999, 2:47 PM EDT for Miami-Dade County, Monroe 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 the Iowa Environmental Mesonet reconstructed for it; the warning itself named whole counties.
The facts
- Issued
- May 22, 1999, 2:47 PM EDT (18:47 UTC)
- Expired
- May 22, 1999, 3:30 PM EDT
- In force
- 43 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties; the outline is the Mesonet’s reconstruction
Counties Miami-Dade County, FL, Monroe County, FL
The radar
The Miami radar (KAMX), 41 km from the middle of the area, began a volume at 18:43 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.
The nearest sounding before it
Miami, FL (KMFL), launched 12:00Z, 6.8 hours before the alert went out and 64 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
- 1433 J/kg
- Mixed-layer CIN
- -7 J/kg
- Mixed-layer LCL
- 822 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -32 m²/s²
- 0-3 km storm-relative helicity
- -5 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KMIA 221846 RRA SVRMIA FLC025-087-221930- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 247 PM EDT SAT MAY 22 1999 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WEST CENTRAL DADE COUNTY IN FLORIDA EAST CENTRAL MONROE COUNTY IN FLORIDA * UNTIL 330 PM EDT * AT 247 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM 2 MILES NORTH OF PA-HAY-OKEE LOOKOUT TOWER... MOVING SOUTHWEST AT 10 MPH. RADAR HAS INDICATED THAT THIS STORM CAN PRODUCE WIND GUSTS OVER 50 MPH AND PRODUCE HAIL. * SOME LOCATIONS WHICH MAY BE AFFECTED BY THIS STORM INCLUDE... THE WESTERN PORTION OF THE LOOP ROAD IN EVERGLADES NATIONAL PARK AND MAHOGAMY HAMMOCK. VERY SMALL...BRIEF...BUT DANGEROUS TORNADOES ARE POSSIBLE WITH THIS STORM. STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED. REPORT SEVERE WEATHER TO THE NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE FORECAST OFFICE IN MIAMI. LAT...LON 2549 8066 2561 8082 2543 8097 2532 8084
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.
In the hours before
Special weather statement, May 22, 9:01 AM EDT, 5 hours 46 minutes before
FLZ063-066>075-212300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK...UPDATE... NATIONAL WEATHER SERVICE MIAMI FL 901 AM EDT SAT MAY 22 1999 A NARROW LINE OF SHOWERS MOVING INTO THE COASTAL WATERS OFF OF PALM BEACH COUNTY MAY PRODUCE SOME WATERSPOUTS THIS MORNING. OTHERWISE...SCATTERED SHOWERS AND THUNDERSTORMS WILL AGAIN DEVELOP OVER SOUTH FLORIDA WITH MOST OF THE ACTIVITY OCCURRING DURING THE AFTERNOON HOURS OVER THE INTERIOR SECTIONS AND OVER SOUTHWEST COASTAL COUNTIES. SOME OF THESE THUNDERSTORMS COULD PRODUCE DANGEROUS LIGHTNING...GUSTY WINDS...AND HAIL.
Special weather statement, May 22, 9:01 AM EDT, 5 hours 46 minutes before
FLZ063-066>075-212300- SOUTH FLORIDA HAZARDOUS WEATHER OUTLOOK...UPDATE... NATIONAL WEATHER SERVICE MIAMI FL 901 AM EDT SAT MAY 22 1999 A NARROW LINE OF SHOWERS MOVING INTO THE COASTAL WATERS OFF OF PALM BEACH COUNTY MAY PRODUCE SOME WATERSPOUTS THIS MORNING. OTHERWISE...SCATTERED SHOWERS AND THUNDERSTORMS WILL AGAIN DEVELOP OVER SOUTH FLORIDA WITH MOST OF THE ACTIVITY OCCURRING DURING THE AFTERNOON HOURS OVER THE INTERIOR SECTIONS AND OVER SOUTHWEST COASTAL COUNTIES. SOME OF THESE THUNDERSTORMS COULD PRODUCE DANGEROUS LIGHTNING...GUSTY WINDS...AND HAIL.
The office that day
Everything else NWS Miami, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 1:56 PM EDT | Severe Thunderstorm Warning | MFL | Collier | 49 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1999Every severe thunderstorm warning in 1999
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.