Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 5, NWS Atlanta, GA

January 17, 1999Treutlen County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jan 17, 1999, 8:57 PM EST for Treutlen County, Georgia. It was in force for 33 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Jan 17, 1999, 8:57 PM EST (01:57 UTC)
Expired
Jan 17, 1999, 9:30 PM EST
In force
33 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Treutlen County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.0 hours before the alert went out and 210 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 00:00Z on 1999-01-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 378 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 00:00Z on 1999-01-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 617 square meters per square second.1939587897117Sfc1 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
378 J/kg
Mixed-layer CIN
-82 J/kg
Mixed-layer LCL
721 m above ground
0-6 km bulk shear
56 kt
0-1 km storm-relative helicity
617 m²/s²
0-3 km storm-relative helicity
700 m²/s²
Significant tornado parameter
1.2
Supercell composite
5.9

Open this sounding in Storm Lab

The text

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

999 
WUUS1 KATL 180159 RRA
SVRATL
GAC283-180230-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
857 PM EST SUN JAN 17 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TREUTLEN COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 930 PM EST

* AT 856 PM EST... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  IN THE VICINITY OF SOPERTON... MOVING NORTHEAST AT 30 MPH.

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
EXTENSION 204.

$$ JB

The office that day

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

IssuedProductOfficeCountiesLasted
Jan 17, 7:31 PM ESTSevere Thunderstorm WarningFFCMonroe44 min
Jan 17, 8:16 PM ESTSevere Thunderstorm WarningFFCLaurens49 min
Jan 17, 9:17 PM ESTSevere Thunderstorm WarningFFCEmanuel48 min
Jan 18, 4:24 AM ESTSevere Thunderstorm WarningFFCCrisp36 min
Jan 18, 4:43 AM ESTSevere Thunderstorm WarningFFCFloyd, Polk47 min
Jan 18, 4:45 AM ESTSevere Thunderstorm WarningFFCDodge, Pulaski35 min
Jan 18, 5:04 AM ESTSevere Thunderstorm WarningFFCLaurens51 min
Jan 18, 5:19 AM ESTSevere Thunderstorm WarningFFCBartow, Cherokee, Gordon, Pickens31 min
Jan 18, 5:24 AM ESTSevere Thunderstorm WarningFFCWilcox31 min
Jan 18, 5:36 AM ESTSevere Thunderstorm WarningFFCJohnson34 min
Jan 18, 5:39 AM ESTSevere Thunderstorm WarningFFCCrisp, Wilcox36 min
Jan 18, 5:56 AM ESTSevere Thunderstorm WarningFFCJefferson34 min
Jan 18, 6:00 AM ESTSevere Thunderstorm WarningFFCPulaski35 min
Jan 18, 7:30 AM ESTSevere Thunderstorm WarningFFCJefferson35 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; the sounding from the Mesonet's radiosonde archive.