Alert archive / Georgia / Severe Thunderstorm Warnings in 1989

Severe Thunderstorm Warning 146, NWS Atlanta, GA

July 27, 1989Jefferson County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 27, 1989, 6:45 PM EDT for Jefferson County, Georgia. It was in force for 45 min.

The area

The counties it named.

The facts

Issued
Jul 27, 1989, 6:45 PM EDT (22:45 UTC)
Expired
Jul 27, 1989, 7:30 PM EDT
In force
45 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, 10.8 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 1989-07-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1803 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 1989-07-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 21 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
1803 J/kg
Mixed-layer CIN
-61 J/kg
Mixed-layer LCL
946 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
21 m²/s²
0-3 km storm-relative helicity
39 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 KAGS 272247
SVRAGS
GAC163-272330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE AUGUSTA GA
645 PM EDT THU JUL 27 1989
 
THE NATIONAL WEATHER SERVICE IN AUGUSTA HAS EXTEDED A
SEVERE THUNDERSTORM WARNING UNTILE 730 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTY...
 
IN EAST CENTRAL GEORGIA
          ...JEFFERSON
 
AT 645 PM NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CONTINUED IN JEFFERSON COUNTY SOUTH OF WRENS. THE
STORM WAS MOVING SOUTH 15 MPH.
 
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.k
STAY INSIDE AWAY FROM WINDOWS UNTIL THE STORM HAS PASSED.

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 27, 5:26 PM EDTSevere Thunderstorm WarningFFCBurke, Jefferson64 min
Jul 27, 5:28 PM EDTSevere Thunderstorm WarningFFCWarren47 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.