Alert archive / Georgia / Severe Thunderstorm Warnings in 2002

Severe Thunderstorm Warning 337, NWS Atlanta, GA

August 20, 2002Sumter County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 20, 2002, 7:56 PM EDT for Sumter County, Georgia. It was in force for 44 min. 2 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Aug 20, 2002, 7:56 PM EDT (23:56 UTC)
Expired: Aug 20, 2002, 8:40 PM EDT
In force: 44 min
Issued by: NWS Atlanta, GA
Area: Counties, with a storm outline in the text

County Sumter County, GA

What was reported inside it

Time	Report	Where	Remark
Aug 20, 8:10 PM EDT	Thunderstorm Wind	Desoto, GA	The Sumter county 911 center reported that trees and power lines were down in Americus and trees were down in both Leslie and Desoto.
Aug 20, 8:10 PM EDT	Hail 0.88	Desoto, GA	The Sumter county 911 center reported dime to nickel size hail in Americus, Desoto, and Leslie.

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, 11.9 hours before the alert went out and 155 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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 text

As transmitted, in the capitals the NWS used until 2016.

094 
WUUS52 KFFC 202356
SVRATL
GAC261-210040-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
755 PM EDT TUE AUG 20 2002

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SUMTER COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 840 PM EDT

* AT 755 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 8 MILES NORTHEAST OF DE SOTO...MOVING SOUTHWEST
  AT 20 MPH.

* LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...AMERICUS...DE
SOTO AND LESLIE.

HAIL TO THE SIZE OF NICKELS AND WIND GUSTS TO 60 MPH CAN BE EXPECTED 
IN THE WARNED AREA.

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER
SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6.

LAT...LON 3194 8396 3216 8402 3210 8438 3191 8433

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 20, 5:03 PM EDT	Severe Thunderstorm Warning	FFC	Floyd, Polk	27 min
Aug 20, 5:33 PM EDT	Severe Thunderstorm Warning	FFC	Haralson, Polk	27 min
Aug 20, 6:52 PM EDT	Severe Thunderstorm Warning	FFC	Dooly	33 min
Aug 20, 7:26 PM EDT	Severe Thunderstorm Warning	FFC	Troup	19 min
Aug 20, 7:49 PM EDT	Severe Thunderstorm Warning	FFC	Dooly	21 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2002 Every 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.