Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 30, NWS Tallahassee, FL

March 17, 1990Stewart County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Mar 17, 1990, 12:57 AM EST for Stewart County, Georgia. It was in force for 63 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
Mar 17, 1990, 12:57 AM EST (05:57 UTC)
Expired
Mar 17, 1990, 2:00 AM EST
In force
63 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Stewart 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
Mar 17, 1:30 AM ESTThunderstorm Wind 0Stewart, 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

Centreville/Bibb, AL (KCKL), launched 00:00Z, 6.0 hours before the alert went out and 240 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, Centreville/Bibb, AL at 00:00Z on 1990-03-17Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Centreville/Bibb, AL at 00:00Z on 1990-03-17The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
586 m above ground
0-6 km bulk shear
81 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
495 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 KCSG 170558
SVRCSG
GAC259-170700-
 
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE COLUMBUS GA
1257 AM EST SAT MAR 17 1990
 
THE NATIONAL WEATHER SERVICE IN COLUMBUS HAS ISSUED A
SEVERE THUNDERSTORM WARNING EFFECTIVE UNTIL  200 AM EST
FOR PEOPLE IN THE FOLLOWING LOCATIONS...
 
IN WEST CENTRAL GEORGIA
 
   ...STEWART COUNTY
 
AT 1255 AM EST RADAR INDICATED A SEVERE THUNDERSTORM IN THE
EXTREME SOUTHWEST CORNER OF STEWART COUNTY WEST OF LUMPKIN.
THE THUNDERSTORM WAS MOVING NORTHEAST AT 35 MPH.
 
 
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 Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Mar 16, 9:34 PM ESTSevere Thunderstorm WarningTAEMacon, Taylor41 min
Mar 16, 11:40 PM ESTFlash Flood WarningTAEMuscogee3 hr
Mar 17, 2:20 AM ESTSevere Thunderstorm WarningTAECalhoun, Terrell25 min
Mar 17, 2:53 AM ESTFlash Flood WarningTAEMuscogee4 hr
Mar 17, 11:00 AM ESTFlash Flood WarningTAEWebster3 hr

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.