Alert archive / Georgia / Severe Thunderstorm Warnings in 1991

Severe Thunderstorm Warning 49, NWS Jacksonville, FL

April 27, 1991Effingham County, Georgia

NWS Jacksonville, FL issued this severe thunderstorm warning at Apr 27, 1991, 4:32 PM EDT for Effingham County, Georgia. It was in force for 58 min.

The area

The counties it named.

The facts

Issued
Apr 27, 1991, 4:32 PM EDT (20:32 UTC)
Expired
Apr 27, 1991, 5:30 PM EDT
In force
58 min
Issued by
NWS Jacksonville, FL
Area
Whole counties

County Effingham County, GA

The nearest sounding before it

Athens Municipal, GA (KAHN), launched 12:00Z, 8.5 hours before the alert went out and 253 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 1991-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 133 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 1991-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 90 square meters per square second.19395878Sfc1 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
133 J/kg
Mixed-layer CIN
-12 J/kg
Mixed-layer LCL
548 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
90 m²/s²
0-3 km storm-relative helicity
116 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 Jacksonville, FL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 4:32 PM EDTSevere Thunderstorm WarningJAXBulloch, Candler58 min
Apr 27, 5:05 PM EDTSevere Thunderstorm WarningJAXLiberty, Long55 min
Apr 27, 5:46 PM EDTSevere Thunderstorm WarningJAXBryan, Bulloch, Evans59 min
Apr 27, 6:01 PM EDTSevere Thunderstorm WarningJAXBryan, Liberty59 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; the sounding from the Mesonet's radiosonde archive.