Alert archive / Georgia / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 548, NWS Atlanta, GA

November 21, 1997Webster County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Nov 21, 1997, 9:29 PM EST for Webster County, Georgia. It was in force for 31 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Nov 21, 1997, 9:29 PM EST (02:29 UTC)
Expired: Nov 21, 1997, 10:00 PM EST
In force: 31 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Webster County, GA

The radar

The Ft Rucker radar (KEOX), 108 km from the middle of the area, began a volume at 02:28 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Nov 21, 8:00 PM EST	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.5 hours before the alert went out and 147 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: 440 J/kg
Mixed-layer CIN: -11 J/kg
Mixed-layer LCL: 528 m above ground
0-6 km bulk shear: 52 kt
0-1 km storm-relative helicity: 562 m²/s²
0-3 km storm-relative helicity: 896 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 220228 RRA
SVRATL
GAC307-220300-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
929 PM EST FRI NOV 21 1997
 
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL 1000 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN WEST CENTRAL GEORGIA
 
   ...WEBSTER COUNTY
 
AT 927 PM EST RADAR INDICATED A SEVERE THUNDERSTORM 7 MILES WEST PRESTON
MOVING EAST AT 40 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 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.
 
IF YOU EXPERIENCE STORM DAMAGE TO STRUCTURES OR TREES...OR HAIL THE
SIZE OF DIMES OR LARGER...PLEASE REPORT IT TO THE NATIONAL WEATHER
SERVICE BY CALLING 770-486-8535.

The office that day

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

Issued	Product	Office	Counties	Lasted
Nov 21, 8:20 PM EST	Flash Flood Warning	FFC	DeKalb, Fulton	3 hr
Nov 21, 8:32 PM EST	Severe Thunderstorm Warning	FFC	Marion, Webster	43 min
Nov 21, 8:52 PM EST	Tornado Warning	FFC	Marion	33 min
Nov 21, 9:01 PM EST	Tornado Warning	FFC	Schley	29 min
Nov 21, 9:06 PM EST	Severe Thunderstorm Warning	FFC	Sumter	44 min
Nov 21, 9:27 PM EST	Severe Thunderstorm Warning	FFC	Macon	33 min
Nov 21, 11:15 PM EST	Severe Thunderstorm Warning	FFC	Houston	30 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1997 Every severe thunderstorm warning in 1997

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; radar from the NEXRAD Level II archive.