Alert archive / Florida / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 36, NWS Tallahassee, FL

April 10, 1990Okaloosa County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 10, 1990, 6:04 PM CDT for Okaloosa County, Florida. It was in force for 41 min.

The area

The counties it named.

The facts

Issued
Apr 10, 1990, 6:04 PM CDT (23:04 UTC)
Expired
Apr 10, 1990, 6:45 PM CDT
In force
41 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, 11.1 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.

Skew-T log-pSkew-T log-p diagram, Apalachicola Mun, FL at 12:00Z on 1990-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 44 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 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 12:00Z on 1990-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 square meters per square second.19395878Sfc1 km3 km6 km9 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
44 J/kg
Mixed-layer CIN
-167 J/kg
Mixed-layer LCL
694 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
216 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KPNS 102300
SVRPNS
FLC091-102345-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PENSACOLA FL
604 PM CDT TUE APR 10 1990
 
THE NATIONAL WEATHER SERVICE IN PENSACOLA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  645 PM CDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST FLORIDA
 
   ...OKALOOSA COUNTY
 
 
 
 
WEATHER SERVICE RADAR SHOWED A POSSIBLY SEVERE THUNDERSTORM ON THE
SANTA ROSA AND OKALOOSA COUNTY LINE ABOUT 10 MILES SOUTHEAST OF MUNSONTHIS STORM SHOULD PASS NEAR CRESTVIEW BY 615 PM.  THE STORM WAS MOVING
SOUTHEAST AT 20 TO 25 MILES AN HOUR.
 
IF YOU ARE CAUGHT OUTSIDE...SEEK SHELTER FROM THE WEATHER IN A
STRONG BUILDING.  DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...
AND DEADLY LIGHTNING ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS.
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 4:52 PM CDTTornado WarningTAEEscambia38 min
Apr 10, 5:44 PM CDTSevere Thunderstorm WarningTAESanta Rosa46 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.