Alert archive / Florida / Severe Thunderstorm Warnings in 1994

Severe Thunderstorm Warning 21, NWS Tallahassee, FL

April 21, 1994Gadsden County, Leon County, Florida

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 21, 1994, 5:50 PM EDT for Gadsden County, Leon County, Florida. It was in force for 25 min.

The area

The counties it named.

The facts

Issued
Apr 21, 1994, 5:50 PM EDT (21:50 UTC)
Expired
Apr 21, 1994, 6:15 PM EDT
In force
25 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

Counties Gadsden County, FL, Leon County, FL

The nearest sounding before it

Tallahassee Rgnl, FL (KTLH), launched 12:00Z, 9.8 hours before the alert went out and 19 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, Tallahassee Rgnl, FL at 12:00Z on 1994-04-21Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 88 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, Tallahassee Rgnl, FL at 12:00Z on 1994-04-21The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 69 square meters per square second.1939Sfc1 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
88 J/kg
Mixed-layer CIN
-14 J/kg
Mixed-layer LCL
614 m above ground
0-6 km bulk shear
21 kt
0-1 km storm-relative helicity
69 m²/s²
0-3 km storm-relative helicity
125 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KTLH 212148
SVRTLH
FLC039-073-212215-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TALLAHASSEE FL
550 PM EDT THU APR 21 1994
 
THE NATIONAL WEATHER SERVICE IN TALLAHASSEE HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  615 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTH FLORIDA
 
   ...SOUTHEASTERN GADSDEN COUNTY...WESTERN LEON COUNTY
 
WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM ALONG THE
BORDER OF GADSDEN AND LEON COUNTIES OF THE FLORIDA PANHANDLE JUST
SOUTHWEST OF MIDWAY IN GADSDEN COUNTY. THIS STORM WAS MOVING TO THE
NORTHEAST AT ABOUT 5 TO 10 MPH.
 
 
DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN...AND DEADLY LIGHTNING
ARE ALL POSSIBLE IN A SEVERE THUNDERSTORM. SEEK SHELTER IN A STRONG
BUILDING. STAY AWAY FROM WINDOWS. DO NOT USE TELEPHONES OR
ELECTRICAL APPLIANCES. A MOBILE HOME IS NOT A SAFE REFUGE FROM A
SEVERE THUNDERSTORM...MOVE TO A MORE SUBSTANTIALb BUILDING.
 
 
 
&

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 21, 5:24 PM EDTTornado WarningTAEEscambia36 min
Apr 21, 6:07 PM EDTTornado WarningTAEEscambia, Santa Rosa38 min
Apr 21, 7:01 PM EDTSevere Thunderstorm WarningTAELeon29 min

Nearby

Severe Thunderstorm Warnings in Florida, 1994Every severe thunderstorm warning in 1994

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.