Alert archive / Florida / Severe Thunderstorm Warnings in 1990
Severe Thunderstorm Warning 18, NWS Tallahassee, FL
NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 16, 1990, 11:13 AM CST for Okaloosa County, Florida. It was in force for 62 min.
The area
The counties it named.
The facts
- Issued
- Feb 16, 1990, 11:13 AM CST (17:13 UTC)
- Expired
- Feb 16, 1990, 12:15 PM CST
- In force
- 62 min
- Issued by
- NWS Tallahassee, FL
- Area
- Whole counties
County Okaloosa 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, 5.2 hours before the alert went out and 185 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
- 265 J/kg
- Mixed-layer CIN
- -94 J/kg
- Mixed-layer LCL
- 574 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 301 m²/s²
- 0-3 km storm-relative helicity
- 295 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.8
The text
As transmitted, in the capitals the NWS used until 2016.
000
TTAA00 KPNS 161714 COR
SVRPNS
FLC033-091-113-161815-
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM AND SPECIAL MARINE WARNING ...CORRECTION...
NATIONAL WEATHER SERVICE PENSACOLA FL
1113 AM CST FRI FEB 16 1990
THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A
SEVERE THUNDERSTORM WARNING AND
SPECIAL MARINE WARNING EFFECTIVE UNTIL 1215 PM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
IN NORTHWEST FLORIDA
...SOUTHEASTERN ESCAMBIA...SOUTHERN OKALOOSA
...SOUTHERN SANTA ROSA
AND ADJOINING COASTAL WATERS OF THESE THREE COUNTIES.
AT 1105 AM CST RADAR INDICATED A CLUSTER OF SEVERE THUNDERSTORMS OVER
EXTREME SOUTHERN ESCAMBIA COUNTY FLORIDA AND THE COASTAL WATERS UP TO
25 MILES SOUTH OF THERE.
THE CLUSTER OF STORMS WAS MOVING TO THE NORTHEAST AT 45 MPH TOWARD THE
SOUTHERN AND COASTAL SECTIONS OF SANTA ROSA AND OKALOOSA COUNTIES.
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA. REMEMBER
SEVERE THUNDERSTORMS CAN ANQD OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING. REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.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, Feb 16, 9:51 AM CST, 1 hour 22 minutes before
TTAAFL KTLH 161551 FLZ003-GAZ011-162100- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE TALLAHASSEE FL 1055 AM EST FRI FEB 16 1990 ...TORNADO WATCH NUMBER 46 IS IN EFFECT UNTIL 4 PM EST THIS AFTERNOON. THE WATCH AREA IS 80 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES EAST OF PENSACOLA FLORIDA TO 45 MILES EAST OF COLUMBUS GEORGIA. THE WATCH INCLUDES THE FLORIDA COUNTY OF JACKSON AND THE GEORGIA COUNTIES OF SEMINOLE AND DECATUR. CURRENTLY NATIONAL WEATHER SERVICE RADAR INDICATES ONLY LIGHT RAIN OCCURING OVER PARTS OF JACKSON COUNTY AND OVER SOUTHEAST ALABAMA. HOWEVER HEAVIER THUNDERSTORMS ARE CURRENTLY LOCATED IN PARTS OF SOUTHERN ALABAMA AND THE WESTERN FLORIDA PANHANDLE. REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH AREA. PERSONS IN THESE AREAS SHOULD BE ON THE OUTLOOK FOR THREATENING WEATHER CONDITIONS ARE BE PREPARED TO MOVE TO A PLACE OF SAFETY IMMEDIATELY.G CTC
The office that day
Everything else NWS Tallahassee, FL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 16, 9:33 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 42 min |
| Feb 16, 10:11 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 64 min |
| Feb 16, 11:13 AM CST | Severe Thunderstorm Warning | TAE | Escambia, Santa Rosa | 62 min |
| Feb 16, 2:28 PM CST | Severe Thunderstorm Warning | TAE | Calhoun | 32 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.