Alert archive / Georgia / Severe Thunderstorm Warnings in 1996

Severe Thunderstorm Warning 357, NWS Atlanta, GA

December 12, 1996Heard County, Troup County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Dec 12, 1996, 5:48 PM EST for Heard County, Troup County, Georgia. It was in force for 42 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
Dec 12, 1996, 5:48 PM EST (22:48 UTC)
Expired
Dec 12, 1996, 6:30 PM EST
In force
42 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Heard County, GA, Troup County, GA

The radar

The Atlanta radar (KFFC), 52 km from the middle of the area, began a volume at 22:48 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.

What was reported inside it

TimeReportWhereRemark
Dec 12, 6:30 PM ESTHail 1La Grange, 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, 10.8 hours before the alert went out and 58 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, Peachtre/Fal Fld, GA at 12:00Z on 1996-12-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 104 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, Peachtre/Fal Fld, GA at 12:00Z on 1996-12-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 108 square meters per square second.193958Sfc1 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
104 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
540 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
108 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 122251 RRA
SVRATL
GAC149-285-122330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
548 PM EST THU DEC 12 1996
 
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  630 PM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN NORTHWEST GEORGIA
 
   ...HEARD COUNTY
 
IN WEST CENTRAL GEORGIA
 
   ...TROUP COUNTY
 
AT 545 PM EST...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS FROM WEDOWEE TO DADEVILLE IN ALABAMA MOVING EAST AT
50 MPH. THE LINE WILL CROSS THE GEORGIA STATE LINE AROUND 600 PM EST.
 
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55
MPH...DE8STRUCTIVE 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.

The office that day

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

IssuedProductOfficeCountiesLasted
Dec 12, 3:41 PM ESTSevere Thunderstorm WarningFFCHaralson, Polk64 min
Dec 12, 3:53 PM ESTSevere Thunderstorm WarningFFCCherokee, Dawson52 min
Dec 12, 5:11 PM ESTSevere Thunderstorm WarningFFCMeriwether34 min
Dec 12, 5:31 PM ESTSevere Thunderstorm WarningFFCHarris29 min
Dec 12, 5:34 PM ESTSevere Thunderstorm WarningFFCLamar, Monroe, Upson41 min
Dec 12, 6:15 PM ESTSevere Thunderstorm WarningFFCLamar, Pike, Upson60 min
Dec 12, 6:15 PM ESTSevere Thunderstorm WarningFFCMonroe60 min
Dec 12, 6:36 PM ESTSevere Thunderstorm WarningFFCJones39 min
Dec 12, 6:56 PM ESTSevere Thunderstorm WarningFFCBibb49 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1996Every severe thunderstorm warning in 1996

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; radar from the NEXRAD Level II archive.