Alert archive / Georgia / Severe Thunderstorm Warnings in 1992

Severe Thunderstorm Warning 60, NWS Atlanta, GA

April 11, 1992Upson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 11, 1992, 11:09 AM EDT for Upson County, Georgia. It was in force for 51 min.

The area

The counties it named.

The facts

Issued
Apr 11, 1992, 11:09 AM EDT (15:09 UTC)
Expired
Apr 11, 1992, 12:00 PM EDT
In force
51 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Upson County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 3.2 hours before the alert went out and 151 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, Athens Municipal, GA at 12:00Z on 1992-04-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 130 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, Athens Municipal, GA at 12:00Z on 1992-04-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 23 square meters per square second.193958Sfc1 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
130 J/kg
Mixed-layer CIN
-96 J/kg
Mixed-layer LCL
991 m above ground
0-6 km bulk shear
16 kt
0-1 km storm-relative helicity
23 m²/s²
0-3 km storm-relative helicity
31 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 KATL 111510
SVRATL
GAC293-111600-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTA  GA
1109 AM EDT SAT APR 11 1992
 
THE NATIONAL WEATHER SERVICE IN ATLANTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL NOON EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL GEORGIA
 
   ...UPSON COUNTY
 
AT 11:10 AM NATIONAL WEATHER SERVICE RADAR INDICATED A STRONG
THUNDERSTORM SOUTH OF THOMASTON IN UPSON COUNTY. THE STORM WAS
MOVING NORTH AT 25 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.

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 11, 2:31 PM EDTSevere Thunderstorm WarningFFCCoweta, Fulton44 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1992Every severe thunderstorm warning in 1992

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.