Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 9, NWS Atlanta, GA

January 18, 1999Dodge County, Pulaski County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jan 18, 1999, 4:45 AM EST for Dodge County, Pulaski County, Georgia. It was in force for 35 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 18, 1999, 4:45 AM EST (09:45 UTC)
Expired: Jan 18, 1999, 5:20 AM EST
In force: 35 min
Issued by: NWS Atlanta, GA
Area: Whole counties

Counties Dodge County, GA, Pulaski County, GA

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 9.8 hours before the alert went out and 170 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: 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.

000 
TTAA00 KATL 180947
SVRATL
GAC091-235-181020-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
445 AM EST MON JAN 18 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  DODGE COUNTY IN CENTRAL GEORGIA
  PULASKI COUNTY IN CENTRAL GEORGIA

* UNTIL 520 AM EST

* AT 444 AM EST... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  12 MILES SOUTHWEST OF GRESSTON... MOVING NORTHEAST AT 55
  MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   GRESSTON                    AROUND 455 AM EST
   EMPIRE                      AROUND 455 AM EST
   EASTMAN                     AROUND 455 AM EST
   RODDY                       AROUND 500 AM EST
   CHESTER                     AROUND 505 AM EST

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 nNATIONAL WEATHER SERVICE AT 770.486.1133
EXTENSION 204.

$$ KDF/BDL

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 17, 7:31 PM EST	Severe Thunderstorm Warning	FFC	Monroe	44 min
Jan 17, 8:16 PM EST	Severe Thunderstorm Warning	FFC	Laurens	49 min
Jan 17, 8:57 PM EST	Severe Thunderstorm Warning	FFC	Treutlen	33 min
Jan 17, 9:17 PM EST	Severe Thunderstorm Warning	FFC	Emanuel	48 min
Jan 18, 4:24 AM EST	Severe Thunderstorm Warning	FFC	Crisp	36 min
Jan 18, 4:43 AM EST	Severe Thunderstorm Warning	FFC	Floyd, Polk	47 min
Jan 18, 5:04 AM EST	Severe Thunderstorm Warning	FFC	Laurens	51 min
Jan 18, 5:19 AM EST	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Gordon, Pickens	31 min
Jan 18, 5:24 AM EST	Severe Thunderstorm Warning	FFC	Wilcox	31 min
Jan 18, 5:36 AM EST	Severe Thunderstorm Warning	FFC	Johnson	34 min
Jan 18, 5:39 AM EST	Severe Thunderstorm Warning	FFC	Crisp, Wilcox	36 min
Jan 18, 5:56 AM EST	Severe Thunderstorm Warning	FFC	Jefferson	34 min
Jan 18, 6:00 AM EST	Severe Thunderstorm Warning	FFC	Pulaski	35 min
Jan 18, 7:30 AM EST	Severe Thunderstorm Warning	FFC	Jefferson	35 min

Nearby

Severe Thunderstorm Warnings in Georgia, 1999 Every 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.