Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 309, NWS Atlanta, GA

August 22, 1990Oglethorpe County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 22, 1990, 12:00 AM EDT for Oglethorpe County, Georgia. It was in force for 60 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: Aug 22, 1990, 12:00 AM EDT (04:00 UTC)
Expired: Aug 22, 1990, 1:00 AM EDT
In force: 60 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Oglethorpe 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
Aug 22, 12:30 AM EDT	Thunderstorm Wind 0	Oglethorpe, 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 00:00Z, 4.0 hours before the alert went out and 22 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: 2060 J/kg
Mixed-layer CIN: -26 J/kg
Mixed-layer LCL: 1374 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 51 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.8

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KAHN 220401
SVRAHN
GAC221-220500-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATHENS GA
MIDNIGHT EDT WED AUG 22 1990
 
THE NATIONAL WEATHER SERVICE IN ATHENS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  100 AM EDT
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHEAST GEORGIA
 
   ...OGLETHORPE COUNTY
 
AT 1155 PM EDT THE ATHENS RADAR INDICATED A SEVERE THUNDERSTORM JUST
SOUTH OF CRAWFORD IN OGLETHORPE COUNTY AND WAS MOVING EAST AT NEAR 10
MILES AN HOUR. THIS STORM SHOULD CONTINUE MOVING ACROSS OGLETHORPE
COUNTY DURING THE NEXT HOUR OR SO.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DESTRUCTIVE HAIL...DEADLY LIGHTNINOG...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
Aug 21, 8:01 PM EDT	Severe Thunderstorm Warning	FFC	Franklin, Stephens	59 min
Aug 21, 9:05 PM EDT	Severe Thunderstorm Warning	FFC	Hart	55 min
Aug 22, 12:33 AM EDT	Severe Thunderstorm Warning	FFC	Columbia	42 min
Aug 22, 8:15 AM EDT	Severe Thunderstorm Warning	FFC	Baldwin	60 min
Aug 22, 5:04 PM EDT	Severe Thunderstorm Warning	FFC	Cherokee, Pickens	56 min
Aug 22, 6:02 PM EDT	Severe Thunderstorm Warning	FFC	Forsyth	28 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.