Alert archive / Georgia / Severe Thunderstorm Warnings in 1997

Severe Thunderstorm Warning 107, NWS Atlanta, GA

April 21, 1997Jasper County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 21, 1997, 7:05 PM EDT for Jasper County, Georgia. It was in force for 25 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: Apr 21, 1997, 7:05 PM EDT (23:05 UTC)
Expired: Apr 21, 1997, 7:30 PM EDT
In force: 25 min
Issued by: NWS Atlanta, GA
Area: Whole counties

County Jasper County, GA

What was reported inside it

Time	Report	Where	Remark
Apr 21, 7:10 PM EDT	Hail 0.75	Hillsboro, 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 11.1 hours before the alert went out and 76 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: 150 J/kg
Mixed-layer CIN: -160 J/kg
Mixed-layer LCL: 636 m above ground
0-6 km bulk shear: 27 kt
0-1 km storm-relative helicity: 24 m²/s²
0-3 km storm-relative helicity: 15 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 212307 RRA
SVRATL
GAC159-212330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
705 PM EDT MON APR 21 1997
 
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM EDT
FOR PEOPLE IN THE FOLLOWING LOCATION...
 
IN NORTHEAST GEORGIA
 
   ...JASPER COUNTY
 
AT 700 PM EDT NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM 10 MILES SOUTH OF MONTICELLO MOVING TO THE NORTHEAST AT 30
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.

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

In the hours before

Local storm report, Apr 21, 6:17 PM EDT, 48 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
617 PM EDT MON APR 21 1997

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

545 PM     12S THOMASTON             GA   1.75 inch hail
4/21/97    UPSON                          GEORGIA STATE PATROL REPORTED
                                          GOLFBALL SIZED HAIL ALONG
                                          STATE ROAD 19.

605 PM     ARABIA                    GA   1.75 inch hail
4/21/97    CRISP                          GOLFBALL SIZED HAIL REPORTED
                                          ALONG INTERSTATE 75 IN ARABIA

710 PM     HILLSBORO                 GA   0.75 inch hail
4/21/97    JASPER                         DIME SIZE HAIL
                                          REPORTED BY HAM
                                          OPERATOR

Local storm report, Apr 21, 6:20 PM EDT, 45 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
617 PM EDT MON APR 21 1997

TIME(EDT)  .....CITY LOCATION.....STATE   ...EVENT/REMARKS...
           ....COUNTY LOCATION....

545 PM     12S THOMASTON             GA   1.75 inch hail
4/21/97    UPSON                          GEORGIA STATE PATROL REPORTED
                                          GOLFBALL SIZED HAIL ALONG
                                          STATE ROAD 19.

605 PM     ARABIA                    GA   1.75 inch hail
4/21/97    CRISP                          GOLFBALL SIZED HAIL REPORTED
                                          ALONG INTERSTATE 75 IN ARABIA

Special weather statement, Apr 21, 6:46 PM EDT, 19 minutes before

GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086-
091>098-103>113-230400-

NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
646 PM EDT MON APR 21 1997

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS ACROSS NORTH AND CENTRAL
GEORGIA THIS EVENING. THUNDERSTORM FORMATION IS POSSIBLE OVER TE CENTRAL
PORTION OF THE STATE DUE TO AN UPPER LEVL DISUTRBANCE PASSING OVER THE AREA.
THUNDERSTORM FORMATION IS POSSIBLE IN THE NORTH DUE TO AN APPROACHING FRONT.
SOME OF THE STORMS MAY BE SEVERE.

SPOTTERS GROUPS AND EMERGENCY MANAGEMENT PERSONNEL IN NORTH GEORGIA
SHOULD MONITOR LOCAL WEATHER CONDTIONS AND BE READY FOR POSSIBLE
ACTIVATION.

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 21, 5:36 PM EDT	Severe Thunderstorm Warning	FFC	Upson	39 min
Apr 21, 6:12 PM EDT	Severe Thunderstorm Warning	FFC	Crisp, Wilcox	33 min
Apr 21, 6:36 PM EDT	Severe Thunderstorm Warning	FFC	Monroe	39 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; verification from NCEI's Storm Data; the sounding from the Mesonet's radiosonde archive.