Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 40, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 28, 1990, 2:33 PM CDT for Walton County, Florida. It was in force for 57 min.
The area
The counties it named.
The facts
- Issued
- Apr 28, 1990, 2:33 PM CDT (19:33 UTC)
- Expired
- Apr 28, 1990, 3:30 PM CDT
- In force
- 57 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
County Walton County, FL
The radar
The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.
The nearest sounding before it
Apalachicola Mun, FL (KAQQ), launched 12:00Z, 7.6 hours before the alert went out and 150 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
- 332 J/kg
- Mixed-layer CIN
- -43 J/kg
- Mixed-layer LCL
- 872 m above ground
- 0-6 km bulk shear
- 27 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- -38 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 KPNS 281931 RRA SVRPNS FLC131-282030- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PENSACOLA FL 233 PM CDT SAT APR 28 1990 THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 330 PM CDT FOR PEOPLE IN THE FOLLOWING LOCATIONS... IN NORTHWEST FLORIDA ...NORTHERN WALTON COUNTY A SEVERE THUNDERSTORM WAS LOCATED BY RADAR IN THE EXTREME NORTHWEST CORNER OF WALTON COUNTY AND WAS MOVING TOWARD THE TOWN OF FLORALA ON THE FLORIDA ALABAMA BORDER. THE STORM WAS MOVING A LITTLE SOUTH OF DUE EAST ABOUT 35 MILES AN HOUR. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DON'T DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. THIS IS A DANGEROUS STORM. IF YOU ARE IN ITS PATH YOU SHOULD PREPARE FOR DAMAGING WIND IN EXCESS OF 55 MPH...LARGE HAIL...AND DEADLY LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING BUT STAY AWAY FROM WINDOWS.
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, Apr 28, 8:41 AM CDT, 5 hours 52 minutes before
FLZ006-007-281545- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 941 AM EDT SAT APR 28 1990 AT 930 AM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS FROM VALDOSTA GEORGIA TO GREENVILLE FLORIDA IN MADISON COUNTY TO SCANLON IN TAYLOR COUNTY. THESE THUNDERSTORMS WERE MOVING EAST AT 25 MPH. THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...HEAVY RAINFALL AND POSSIBLE SMALL HAIL AS THEY MOVE THROUGH MADISON...TAYLOR AND DIXIE COUNTIES DURING THE NEXT COUPLE OF HOURS. STAY TUNED TO NOAA WEATHER RADIO AND OTHER NEWS MEDIA FOR ADDITIONAL INFORMATION ON THESE THUNDERSTORMS. ADB
Special weather statement, Apr 28, 1:13 PM CDT, 1 hour 20 minutes before
FLZ006-282015- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 211 PM EDT SAT APR 28 1990 ...TORNADO WATCH REMAINS IN EFFECT FOR DIXIE AND TAYLOR COUNTIES... AT 200 PM NATIONAL WEATHER SERVICE RADAR SHOWED A LINE OF THUNDERSTORMS FROM JUST SOUTH OF PERRY FLORIDA EXTENDING SOUTHWEST INTTHE GULF TO 30 MILES SOUTH OF ST. MARKS. MOVEMENT WAS EAST AT 6 MPH. THE HEAVIEST RAINFALL WAS INDICATED OVER THE GULF 25 MILES SOUTH OF THE JEFFERSON COUNTY COAST. THESE THUNDERSTORMS WILL PRODUCE STRONG GUSTY WINDS...DANGEROUS LIGHTNING...HEAVY RAIN AND POSSIBLE SMALL HAIL AS THEY MOVE OVER THE APALACHEE BAY AND ACROSS TAYLOR AND DIXIE COUNTIES DURING THE NEXT COUPLE OF HOURS. "STAY TUNED TO NOAA WEATHER RADIO AND OTHER NEWS MEDIA FOR ADDITIONAL STATEMENTS ON THESE THUNDERSTORMS. ADB
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 28, 3:03 PM CDT | Severe Thunderstorm Warning | TAE | Holmes | 27 min |
Nearby
Severe Thunderstorm Warnings in Florida, 1990Every severe thunderstorm warning in 1990
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.