Alert archive / Georgia / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 134, NWS Atlanta, GA

July 25, 1989Jefferson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 25, 1989, 4:12 PM EDT for Jefferson County, Georgia. It was in force for 48 min.

The area

The counties it named.

The facts

Issued
Jul 25, 1989, 4:12 PM EDT (20:12 UTC)
Expired
Jul 25, 1989, 5:00 PM EDT
In force
48 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Jefferson County, GA

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

Athens Municipal, GA (KAHN), launched 12:00Z, 8.2 hours before the alert went out and 129 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 1989-07-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 760 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 1989-07-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 11 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
760 J/kg
Mixed-layer CIN
-63 J/kg
Mixed-layer LCL
1077 m above ground
0-6 km bulk shear
19 kt
0-1 km storm-relative helicity
11 m²/s²
0-3 km storm-relative helicity
27 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 KAGS 252013
SVRAGS
GAC163-252100-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUGUSTA GA
412 PM EDT TUE JUL 25 1989
 
THE NATIONAL WEATHER SERVICE IN AUGUSTA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  500 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL GEORGIA
          ...JEFFERSON
 
AT 410 PM NATIONAL WEATHER SERVICE RADAR INICATED A SEVERE
THUNDERSTORM ALONG THE BURKE-JEFFERSON COUNTY LINE NEAR ST.
CLAIR. THIS THUNDERSTORM WAS MOVING WEST AT 20 MPH.
 
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 RO~OM 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
Jul 25, 4:54 PM EDTSevere Thunderstorm WarningFFCBurke, Richmond51 min
Jul 25, 6:16 PM EDTSevere Thunderstorm WarningFFCButts, Henry44 min
Jul 25, 6:53 PM EDTSevere Thunderstorm WarningFFCCobb, Fulton37 min
Jul 25, 6:57 PM EDTSevere Thunderstorm WarningFFCGilmer33 min
Jul 25, 7:22 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Gordon, Pickens53 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1989Every severe thunderstorm warning in 1989

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.