Alert archive / Georgia / Severe Thunderstorm Warnings in 1990

Severe Thunderstorm Warning 331, NWS Atlanta, GA

August 29, 1990Putnam County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 29, 1990, 10:18 PM EDT for Putnam County, Georgia. It was in force for 42 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
Aug 29, 1990, 10:18 PM EDT (02:18 UTC)
Expired
Aug 29, 1990, 11:00 PM EDT
In force
42 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Putnam 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
Aug 29, 10:40 PM EDTThunderstorm Wind 0Putnam, 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 00:00Z, 2.3 hours before the alert went out and 70 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 00:00Z on 1990-08-30Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2334 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 00:00Z on 1990-08-30The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 29 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
2334 J/kg
Mixed-layer CIN
-29 J/kg
Mixed-layer LCL
1767 m above ground
0-6 km bulk shear
32 kt
0-1 km storm-relative helicity
29 m²/s²
0-3 km storm-relative helicity
80 m²/s²
Significant tornado parameter
0.1
Supercell composite
2.0

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 Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 29, 8:57 PM EDTSevere Thunderstorm WarningFFCDeKalb, Rockdale48 min
Aug 29, 9:48 PM EDTSevere Thunderstorm WarningFFCNewton42 min
Aug 30, 1:34 AM EDTSevere Thunderstorm WarningFFCEmanuel, Johnson41 min
Aug 30, 1:42 PM EDTSevere Thunderstorm WarningFFCMorgan48 min
Aug 30, 1:51 PM EDTSevere Thunderstorm WarningFFCCrisp69 min
Aug 30, 2:12 PM EDTSevere Thunderstorm WarningFFCBaldwin63 min
Aug 30, 4:58 PM EDTSevere Thunderstorm WarningFFCHall, Jackson62 min
Aug 30, 6:50 PM EDTSevere Thunderstorm WarningFFCCoweta, Heard55 min
Aug 30, 7:46 PM EDTSevere Thunderstorm WarningFFCHeard29 min
Aug 30, 7:49 PM EDTSevere Thunderstorm WarningFFCCrawford41 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.