Alert archive / Georgia / Severe Thunderstorm Warnings in 1987

Severe Thunderstorm Warning 12, NWS Atlanta, GA

May 4, 1987Banks County, Hall County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 4, 1987, 1:54 PM EDT for Banks County, Hall County, Georgia. It was in force for 21 min.

The area

The counties it named.

The facts

Issued
May 4, 1987, 1:54 PM EDT (17:54 UTC)
Expired
May 4, 1987, 2:15 PM EDT
In force
21 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Banks County, GA, Hall County, GA

The radar

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

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 5.9 hours before the alert went out and 54 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, Athens Municipal, GA at 12:00Z on 1987-05-04Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 25 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Athens Municipal, GA at 12:00Z on 1987-05-04The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 37 square meters per square second.1939Sfc1 km3 km6 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
25 J/kg
Mixed-layer CIN
-193 J/kg
Mixed-layer LCL
1219 m above ground
0-6 km bulk shear
12 kt
0-1 km storm-relative helicity
37 m²/s²
0-3 km storm-relative helicity
66 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 KAHN 041754
SVRAHN
GAC011-139-041900-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATHENS GA
154 PM EDT MON MAY 4 1987

THE NATIONAL WEATHER SERVICE HAS ISSUED A SEVERE THUNDERSTORM 
WARNING EFFECTIVE UNTIL 300 PM EDT FOR PEOPLE IN THE FOLLOWING 
COUNTIES OF

NORTHEAST GEORGIA...BANKS AND HALL

GOLF BALL SIZE HAIL WAS REPORTED BY THE HALL COUNTY CIVIL
DEFENSE OFFICE IN HALL COUNTY GEORGIA AT 1.45 PM EDT4.
THE THUNDERSTORM WAS MOVING TO THE EAST 15 MPH.

 A SEVERE THUNDERSTORM IS DEFINED AS HAVING WINDS AT LEAST 58 MPH
 AND/OR HAIL 3/4 INCH IN DIAMETER OR LARGER. IF THREATENING
 WEATHER APPROACHES...TAKE IMMEDIATE PRECAUTIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
May 4, 4:39 PM EDTSevere Thunderstorm WarningFFCClarke, Madison, Oglethorpe66 min
May 4, 4:39 PM EDTSevere Thunderstorm WarningFFCJackson66 min
May 4, 4:58 PM EDTSevere Thunderstorm WarningFFCDeKalb47 min
May 4, 5:41 PM EDTSevere Thunderstorm WarningFFCRockdale34 min
May 4, 6:05 PM EDTSevere Thunderstorm WarningFFCMorgan65 min
May 4, 7:11 PM EDTSevere Thunderstorm WarningFFCCrisp49 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1987Every severe thunderstorm warning in 1987

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.