Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 83, NWS Atlanta, GA

April 10, 1990Gwinnett County, Henry County, Rockdale County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 10, 1990, 6:33 PM EDT for Gwinnett County, Henry County, Rockdale County, Georgia. It was in force for 57 min. 2 reports 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 10, 1990, 6:33 PM EDT (22:33 UTC)
Expired
Apr 10, 1990, 7:30 PM EDT
In force
57 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Gwinnett County, GA, Henry County, GA, Rockdale 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

TimeReportWhereRemark
Apr 10, 6:35 PM EDTHail 0.75Gwinnett, GA
Apr 10, 6:40 PM EDTHail 1.5Rockdale, 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 12:00Z, 10.6 hours before the alert went out and 77 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 1990-04-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 26 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, Athens Municipal, GA at 12:00Z on 1990-04-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 201 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
26 J/kg
Mixed-layer CIN
-49 J/kg
Mixed-layer LCL
674 m above ground
0-6 km bulk shear
36 kt
0-1 km storm-relative helicity
201 m²/s²
0-3 km storm-relative helicity
268 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 102234
SVRATL
GAC135-151-247-102330-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE ATLANTA GA
633 PM EDT TUE APR 10 1990
 
THE NATIONAL WEATHER SERVICE IN ATLANTA HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  730 PM EDT
FOR PEOPLE IN THE FOLLOWING COUNTIES...
 
IN NORTHWEST GEORGIA
          ...GWINNETT...NORTHERN HENRY...ROCKDALE
 
AT 630 PM A LINE OF SEVERE THUNDERSTORM WAS SHOWN FROM NEAR
LAWRENCEVILLE TO LITHONIA TO JONESBORO MOVING EAST AT 45 MPH. THESE
ARE DANGEROUS STORMS. NUMEROUS REPORTS OF HAIL FROM 3/4 INCH TO 1 INCH
HAVE BEEN REPORTED WITH THIS LINE.
 
A TORNADO WATCH IS ALSO IN EFFECT FOR THE WARNED AREA.  REMEMBER
SEVERE +THUNDERSTORMS CAN AND OCCASIONALLY DO PRODUCE TORNADOES
WITH LITTLE OR NO ADVANCE WARNING.  REMAIN CALM BUT BE ALERT TO
RAPIDLY CHANGING WEATHER CONDITIONS.

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 10, 4:23 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk52 min
Apr 10, 4:34 PM EDTSevere Thunderstorm WarningFFCGordon41 min
Apr 10, 4:48 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd42 min
Apr 10, 4:48 PM EDTSevere Thunderstorm WarningFFCPaulding42 min
Apr 10, 4:51 PM EDTSevere Thunderstorm WarningFFCCarroll, Haralson54 min
Apr 10, 5:13 PM EDTSevere Thunderstorm WarningFFCGilmer47 min
Apr 10, 5:24 PM EDTSevere Thunderstorm WarningFFCCobb, Douglas, Paulding66 min
Apr 10, 5:47 PM EDTSevere Thunderstorm WarningFFCFulton58 min
Apr 10, 6:05 PM EDTSevere Thunderstorm WarningFFCClayton, DeKalb55 min
Apr 10, 6:30 PM EDTTornado WarningFFCDeKalb30 min
Apr 10, 6:41 PM EDTSevere Thunderstorm WarningFFCMeriwether49 min
Apr 10, 6:55 PM EDTSevere Thunderstorm WarningFFCHenry35 min
Apr 10, 7:06 PM EDTSevere Thunderstorm WarningFFCBarrow, Clarke, Oconee, Oglethorpe69 min
Apr 10, 7:06 PM EDTSevere Thunderstorm WarningFFCGreene, Morgan, Newton, Walton69 min
Apr 10, 7:17 PM EDTSevere Thunderstorm WarningFFCHouston58 min
Apr 10, 7:26 PM EDTTornado WarningFFCHouston64 min
Apr 10, 7:38 PM EDTSevere Thunderstorm WarningFFCCrawford, Monroe67 min
Apr 10, 7:38 PM EDTSevere Thunderstorm WarningFFCJasper, Putnam67 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1990Every 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.