Alert archive / Georgia / Severe Thunderstorm Warnings in 1999

Severe Thunderstorm Warning 128, NWS Atlanta, GA

May 7, 1999Troup County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 7, 1999, 4:23 AM EDT for Troup County, Georgia. It was in force for 32 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
May 7, 1999, 4:23 AM EDT (08:23 UTC)
Expired
May 7, 1999, 4:55 AM EDT
In force
32 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Troup County, GA

The radar

The Atlanta radar (KFFC), 56 km from the middle of the area, began a volume at 08:25 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
May 7, 4:35 AM EDTHail 0.75La Grange, GAThe Georgia State Patrol reported dime size hail and tree limbs down on Robert Taylor Drive at Lambert 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 00:00Z, 8.4 hours before the alert went out and 62 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 1999-05-07Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 109 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 1999-05-07The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 74 square meters per square second.19395878Sfc1 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
109 J/kg
Mixed-layer CIN
-84 J/kg
Mixed-layer LCL
535 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
74 m²/s²
0-3 km storm-relative helicity
108 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 070823 RRA
SVRATL
GAC285-070855-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
423 AM EDT FRI MAY 7 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

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

* UNTIL 455 AM EDT

* AT 422 AM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER
  RADAR  10 MILES WEST OF LA GRANGE... MOVING NORTHEAST AT 40 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...
   LA GRANGE                   AROUND 430 AM EDT
   LOUISE                      AROUND 440 AM EDT
   HARRISONVILLE               AROUND 445 AM EDT
   HOGANSVILLE                 AROUND 450 AM ED<T

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
May 6, 9:45 PM EDTSevere Thunderstorm WarningFFCMarion20 min
May 7, 2:34 PM EDTSevere Thunderstorm WarningFFCCarroll36 min
May 7, 2:40 PM EDTSevere Thunderstorm WarningFFCGilmer35 min
May 7, 3:25 PM EDTSevere Thunderstorm WarningFFCFannin, Union30 min
May 7, 3:42 PM EDTTornado WarningFFCCarroll13 min
May 7, 4:05 PM EDTTornado WarningFFCCarroll, Haralson30 min
May 7, 4:11 PM EDTSevere Thunderstorm WarningFFCTowns34 min
May 7, 4:17 PM EDTTornado WarningFFCPaulding33 min
May 7, 4:33 PM EDTTornado WarningFFCCarroll, Haralson32 min
May 7, 4:34 PM EDTTornado WarningFFCCobb36 min
May 7, 4:37 PM EDTSevere Thunderstorm WarningFFCTroup33 min
May 7, 4:51 PM EDTTornado WarningFFCPaulding34 min
May 7, 5:00 PM EDTTornado WarningFFCCherokee35 min
May 7, 5:03 PM EDTTornado WarningFFCCarroll32 min
May 7, 5:19 PM EDTTornado WarningFFCGordon, Pickens36 min
May 7, 5:22 PM EDTTornado WarningFFCCobb, Paulding33 min
May 7, 5:41 PM EDTTornado WarningFFCCherokee49 min
May 7, 5:48 PM EDTSevere Thunderstorm WarningFFCCarroll47 min
May 7, 5:52 PM EDTSevere Thunderstorm WarningFFCHaralson33 min
May 7, 6:07 PM EDTSevere Thunderstorm WarningFFCTroup33 min
May 7, 6:10 PM EDTSevere Thunderstorm WarningFFCHeard35 min
May 7, 6:13 PM EDTSevere Thunderstorm WarningFFCLumpkin32 min
May 7, 6:18 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta37 min
May 7, 6:26 PM EDTSevere Thunderstorm WarningFFCDawson34 min
May 7, 6:30 PM EDTSevere Thunderstorm WarningFFCTowns, Union50 min
May 7, 6:34 PM EDTSevere Thunderstorm WarningFFCDouglas, Paulding31 min
May 7, 6:42 PM EDTSevere Thunderstorm WarningFFCCobb, Fulton48 min
May 7, 6:44 PM EDTSevere Thunderstorm WarningFFCMeriwether36 min
May 7, 7:00 PM EDTSevere Thunderstorm WarningFFCTroup50 min
May 7, 7:19 PM EDTSevere Thunderstorm WarningFFCLumpkin, White51 min
May 7, 7:26 PM EDTSevere Thunderstorm WarningFFCCarroll, Douglas34 min
May 7, 7:30 PM EDTSevere Thunderstorm WarningFFCCobb, Fulton35 min
May 7, 7:44 PM EDTSevere Thunderstorm WarningFFCTroup31 min
May 7, 7:53 PM EDTTornado WarningFFCMeriwether, Troup47 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; radar from the NEXRAD Level II archive.