Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 674, NWS Atlanta, GA

August 24, 1999Macon County, Taylor County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Aug 24, 1999, 4:26 PM EDT for Macon County, Taylor County, Georgia. It was in force for 34 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, 4:26 PM EDT (20:26 UTC)
Expired
Aug 24, 1999, 5:00 PM EDT
In force
34 min
Issued by
NWS Atlanta, GA
Area
Whole counties

Counties Macon County, GA, Taylor County, GA

What was reported inside it

TimeReportWhereRemark
Aug 24, 4:30 PM EDTHail 0.75Reynolds, 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.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.4 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 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

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

000 
TTAA00 KATL 242026 RRA
SVRATL
GAC193-269-242100-

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
426 PM EDT TUE AUG 24 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MACON COUNTY IN WEST CENTRAL GEORGIA
  EASTERN TAYLOR COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 500 PM EDT

* AT 425 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  10 MILES SOUTHEAST OF BUTLER OR IN THE VICINITY OF
  HICKS... MOVING EAST AT 10 MPH.

* THIS STORM WILL AFFECT POTTERVILLE AND GARDEN VALLEY DURING THE
  NEXT 30 MINUTES.

DAMAGING WIND...LARGE HAIL...VERY HEAVY RAIN AND DEADLY LIGHTNING
  ARE ALL POSSIBLE IN SEVERE THUNDERSTORMS. IF YOU SEE DAMAGE OR
  LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE AT 770-486-1133 AT
  EXTENSION 2 0 4.

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, 6:10 PM EDTSevere Thunderstorm WarningFFCEmanuel20 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.