Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 332, NWS Atlanta, GA

August 20, 2002Floyd County, Polk County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 20, 2002, 5:03 PM EDT for Floyd County, Polk County, Georgia. It was in force for 27 min. 3 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
Aug 20, 2002, 5:03 PM EDT (21:03 UTC)
Expired
Aug 20, 2002, 5:30 PM EDT
In force
27 min
Issued by
NWS Atlanta, GA
Area
Counties, with a storm outline in the text

Counties Floyd County, GA, Polk County, GA

The radar

The Atlanta radar (KFFC), 104 km from the middle of the area, began a volume at 21:04 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

What was reported inside it

TimeReportWhereRemark
Aug 20, 5:05 PM EDTThunderstorm WindWax, GAThe Floyd county 911 center reported that power lines were down near Wax Lake.
Aug 20, 5:05 PM EDTHail 0.75Wax, GAThe Floyd county 911 center reported dime size hail near Wax Lake.
Aug 20, 5:40 PM EDTThunderstorm WindCedartown, GAThe Polk county 911 center reported that two trees were blown down on Campbell Road.

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, 9.1 hours before the alert went out and 107 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 2002-08-20Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1515 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°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 2002-08-20The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 27 square meters per square second.1939Sfc1 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
1515 J/kg
Mixed-layer CIN
-74 J/kg
Mixed-layer LCL
967 m above ground
0-6 km bulk shear
13 kt
0-1 km storm-relative helicity
27 m²/s²
0-3 km storm-relative helicity
47 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Aug 20, 5:33 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk27 min
Aug 20, 6:52 PM EDTSevere Thunderstorm WarningFFCDooly33 min
Aug 20, 7:26 PM EDTSevere Thunderstorm WarningFFCTroup19 min
Aug 20, 7:49 PM EDTSevere Thunderstorm WarningFFCDooly21 min
Aug 20, 7:56 PM EDTSevere Thunderstorm WarningFFCSumter44 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2002Every severe thunderstorm warning in 2002

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; radar from the NEXRAD Level II archive.