Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 239, NWS Atlanta, GA

July 23, 1990Butts County, Spalding County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jul 23, 1990, 3:43 PM EDT for Butts County, Spalding County, Georgia. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The counties it named, with what was reported inside it.

The facts

Issued: Jul 23, 1990, 3:43 PM EDT (19:43 UTC)
Expired: Jul 23, 1990, 4:30 PM EDT
In force: 47 min
Issued by: NWS Atlanta, GA
Area: Whole counties

Counties Butts County, GA, Spalding County, GA

The radar

The WSR-88D network and its archive begin in 1991, so there is no radar volume for this alert.

What was reported inside it

Time	Report	Where	Remark
Jul 23, 4:00 PM EDT	Thunderstorm Wind 0	Butts, GA

NCEI Storm Data entries that began inside the alert's area while it was in force. Before 2003 the local storm report archive is thin, so this is the record of what happened rather than what was phoned in. Storm Data before 1996 records only tornadoes, thunderstorm wind and hail.

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 7.7 hours before the alert went out and 107 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 1687 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 617 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 47 m²/s²
0-3 km storm-relative helicity: 3 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 231943
SVRATL
GAC035-255-232030-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTA  GA
343 PM EDT MON JUL 23 1990
 
THE NATIONAL WEATHER SERVICE IN ATLANTA  HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  430 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST GEORGIA
 
   ...BUTTS COUNTY
 
IN NORTHWEST GEORGIA
 
   ...EASTERN SPALDING COUNTY
 
RADAR INDICATED A SEVERE THUNDERSTORM IN EAST SPALDING COUNTY EAST OF
GRIFFIN MOVING EASTWARD AT 25 MPH. THIS WILL TAKE THE THUNDERSTORM
ACROSS BUTTS COUNTY IN THE NEXT 30 MINUTES.
 
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIzGHTNING...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.

Issued	Product	Office	Counties	Lasted
Jul 22, 8:27 PM EDT	Severe Thunderstorm Warning	FFC	Lumpkin, White	63 min
Jul 22, 9:12 PM EDT	Severe Thunderstorm Warning	FFC	Habersham, Stephens	63 min
Jul 23, 4:10 PM EDT	Severe Thunderstorm Warning	FFC	Henry	50 min
Jul 23, 4:38 PM EDT	Severe Thunderstorm Warning	FFC	Cobb	52 min
Jul 23, 4:57 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fayette	48 min
Jul 23, 5:00 PM EDT	Severe Thunderstorm Warning	FFC	Fulton	30 min
Jul 23, 5:26 PM EDT	Severe Thunderstorm Warning	FFC	DeKalb, Gwinnett	49 min
Jul 23, 5:55 PM EDT	Severe Thunderstorm Warning	FFC	Rockdale	50 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1990 Every 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.