Alert archive / Georgia / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 40, NWS Tallahassee, FL

April 30, 1991Colquitt County, Mitchell County, Worth County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at Apr 30, 1991, 3:45 PM EDT for Colquitt County, Mitchell County, Worth County, Georgia. It was in force for 60 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 30, 1991, 3:45 PM EDT (19:45 UTC)
Expired
Apr 30, 1991, 4:45 PM EDT
In force
60 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

Counties Colquitt County, GA, Mitchell County, GA, Worth County, GA

What was reported inside it

TimeReportWhereRemark
Apr 30, 3:50 PM EDTThunderstorm Wind 0Mitchell, GA
Apr 30, 3:50 PM EDTThunderstorm Wind 0Worth, 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

Apalachicola Mun, FL (KAQQ), launched 12:00Z, 7.8 hours before the alert went out and 204 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, Apalachicola Mun, FL at 12:00Z on 1991-04-30Temperature 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, Apalachicola Mun, FL at 12:00Z on 1991-04-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
NaN m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
102 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.2

Open this sounding in Storm Lab

The text

The text of this product is not in the archive. The NWS text archive before 2002 is incomplete.

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

Special weather statement, Apr 30, 3:45 PM EDT, 0 minutes before
FLZ003-005-GAZ011-302045-

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE TALLAHASSEE FL
346 PM EDT (246 PM CDT) TUE APR 30 1991

AT 335 PM EDT...NATIONAL WEATHER SERVICE RADR INDICATED A VERY STRONG
THUNDERSTORM LOCATED IN EXTREME EASTERN JACKSON COUNTY OF NORTH
FLORIDA AND SOUTHERN SEMINOILE COUNTY OF SOUTHWEST GEORGIA.

THE THUNDERSTORM WAS MOVING TO THE EAST NORTHEAST AT 25 TO 35 MPH AND
SHOULD MOVE THROUGH SEMINOLE COUNTY AND INTO DECATUR COUNTY IN THE
NEXT HOUR.

RADAR INDICATED THIS THUNDERSTORM WAS PRODUCING SMALL HAIL AND WINDS
TO 45 MPH.

PERSONS LIVING IN SOUTHWEST GEORGIA SHOULD BE ON THE LOOKOUT FOR THIS
DANGEROUS STORM...AND STAY TUNED TO NOAA WEATHER RADIO FOR FURTHER
INFORMATION.

The office that day

Everything else NWS Tallahassee, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 29, 9:05 PM EDTSevere Thunderstorm WarningTAEColquitt40 min
Apr 30, 6:11 PM EDTTornado WarningTAECook34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1991Every severe thunderstorm warning in 1991

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.