Alert archive / Florida / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 72, NWS Miami, FL
NWS Miami, FL issued this severe thunderstorm warning at May 22, 1999, 1:56 PM EDT for Collier 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 counties it named.
The facts
- Issued
- May 22, 1999, 1:56 PM EDT (17:56 UTC)
- Expired
- May 22, 1999, 2:45 PM EDT
- In force
- 49 min
- Issued by
- NWS Miami, FL
- Area
- Whole counties
County Collier County, FL
The radar
The Miami radar (KAMX), 111 km from the middle of the area, began a volume at 17:58 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, 5.9 hours before the alert went out and 113 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.
000 TTAA00 KMIA 221754 RRA SVRMIA FLC021-221845- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MIAMI FL 156 PM EDT SAT MAY 22 1999 THE NATIONAL WEATHER SERVICE IN MIAMI HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN COLLIER COUNTY IN SOUTHWESTERN FLORIDA * UNTIL 245 PM EDT * AT 154 PM EDT...MIAMI NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM JUST NORTH OF MARCO ISLAND DRIFTING SOUTHWEST LESS THAN 10 MPH. A SECOND SEVERE THUNDERSTORM WAS INDICATED NEAR NAPLES SHOWING VERY LITTLE MOVEMENT. BOTH SEVERE THUNDERSTORMS WILL LIKELY PRODUCE LARGE HAIL. * SOME LOCATIONS AFFECTED... NAPLES...EAST NAPLES...MARCO ISLAND SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. SEEK SHELTER IN A STRONG BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR ELECTRICAL APPLIANCES.
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, 4 hours 55 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, 4 hours 55 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, 2:47 PM EDT | Severe Thunderstorm Warning | MFL | Miami-Dade, Monroe | 43 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.