Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 2, NWS Tallahassee, FL

February 10, 1990Escambia County, Santa Rosa County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Feb 10, 1990, 3:49 AM CST for Escambia County, Santa Rosa County, Florida. It was in force for 56 min.

The area

The counties it named.

The facts

Issued
Feb 10, 1990, 3:49 AM CST (09:49 UTC)
Expired
Feb 10, 1990, 4:45 AM CST
In force
56 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

Counties Escambia County, FL, Santa Rosa 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 00:00Z, 9.8 hours before the alert went out and 233 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.

Skew-T log-pSkew-T log-p diagram, Apalachicola Mun, FL at 00:00Z on 1990-02-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2180 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Apalachicola Mun, FL at 00:00Z on 1990-02-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 124 square meters per square second.193958Sfc1 km3 km6 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
2180 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
602 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
124 m²/s²
0-3 km storm-relative helicity
199 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.8

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000 
TTAA00 KPNS 100948
SVRPNS
FLC033-113-101045-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PENSACOLA FL
349 AM CST SAT FEB 10 1990
 
THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  445 AM CST
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST FLORIDA
          ...NORTHERN ESCAMBIA...NORTHERN SANTA ROSA
 
A SOLID LINE OF THUNDERSTORMS WITH SOME POSSIBLY SEVERE WAS MOVING
INTO NORTHWEST ESCAMBIA COUNTY OF FLORIDA. THIS LINE WILL BE MOVING
INTO NORTH SANTA ROSA COUNTY BETWEEN 4 AND 5 AM CST.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY H*EAVY 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.

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Feb 10, 8:14 AM CSTTornado WarningTAEEscambia, Santa Rosa61 min
Feb 10, 8:32 AM CSTSevere Thunderstorm WarningTAEOkaloosa58 min
Feb 10, 9:07 AM CSTTornado WarningTAEGulf53 min
Feb 10, 9:44 AM CSTSevere Thunderstorm WarningTAEWakulla31 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.