Alert archive / Georgia / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 49, NWS Tallahassee, FL

May 5, 1991Sumter County, Georgia

NWS Tallahassee, FL issued this severe thunderstorm warning at May 5, 1991, 6:10 PM EDT for Sumter County, Georgia. It was in force for 35 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
May 5, 1991, 6:10 PM EDT (22:10 UTC)
Expired
May 5, 1991, 6:45 PM EDT
In force
35 min
Issued by
NWS Tallahassee, FL
Area
Whole counties

County Sumter County, GA

What was reported inside it

TimeReportWhereRemark
May 5, 6:15 PM EDTThunderstorm Wind 0Sumter, 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, 10.2 hours before the alert went out and 228 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 1991-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 13 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 1991-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 30 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
13 J/kg
Mixed-layer CIN
-54 J/kg
Mixed-layer LCL
560 m above ground
0-6 km bulk shear
33 kt
0-1 km storm-relative helicity
30 m²/s²
0-3 km storm-relative helicity
52 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

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.

The office that day

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

IssuedProductOfficeCountiesLasted
May 5, 4:56 PM EDTSevere Thunderstorm WarningTAEHarris, Muscogee49 min
May 5, 5:13 PM EDTTornado WarningTAEHarris, Muscogee47 min
May 5, 5:29 PM EDTSevere Thunderstorm WarningTAEChattahoochee, Marion, Talbot46 min
May 5, 5:44 PM EDTSevere Thunderstorm WarningTAESchley, Taylor31 min
May 5, 5:44 PM EDTSevere Thunderstorm WarningTAEStewart31 min
May 5, 6:24 PM EDTSevere Thunderstorm WarningTAELee, Terrell36 min
May 5, 7:54 PM EDTSevere Thunderstorm WarningTAEColquitt66 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.