Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 675, NWS Atlanta, GA

August 24, 1999Emanuel County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 24, 1999, 6:10 PM EDT for Emanuel County, Georgia. It was in force for 20 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 24, 1999, 6:10 PM EDT (22:10 UTC)
Expired
Aug 24, 1999, 6:30 PM EDT
In force
20 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Emanuel County, GA

What was reported inside it

TimeReportWhereRemark
Aug 24, 6:15 PM EDTThunderstorm WindNunez, GAEmanuel county 911 reported lots of trees and some power lines down. Also, there was some street flooding reported.

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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.2 hours before the alert went out and 223 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-08-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 636 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, Peachtre/Fal Fld, GA at 12:00Z on 1999-08-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 45 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
636 J/kg
Mixed-layer CIN
-48 J/kg
Mixed-layer LCL
872 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
45 m²/s²
0-3 km storm-relative helicity
45 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 Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 23, 11:28 PM EDTSevere Thunderstorm WarningFFCJasper, Putnam32 min
Aug 24, 12:03 PM EDTSevere Thunderstorm WarningFFCNewton32 min
Aug 24, 12:28 PM EDTSevere Thunderstorm WarningFFCJasper, Morgan32 min
Aug 24, 4:08 PM EDTSevere Thunderstorm WarningFFCMeriwether32 min
Aug 24, 4:26 PM EDTSevere Thunderstorm WarningFFCMacon, Taylor34 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1999Every severe thunderstorm warning in 1999

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.