Alert archive / Georgia / Tornado Warnings in 1999

Tornado Warning 8, NWS Atlanta, GA

May 6, 1999Gwinnett County, Georgia

NWS Atlanta, GA issued this tornado warning at May 6, 1999, 9:04 AM EDT for Gwinnett County, Georgia. It was in force for 31 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 6, 1999, 9:04 AM EDT (13:04 UTC)
Expired
May 6, 1999, 9:35 AM EDT
In force
31 min
Issued by
NWS Atlanta, GA
Area
Whole counties

County Gwinnett County, GA

What was reported inside it

TimeReportWhereRemark
May 6, 9:05 AM EDTHail 2.5Lilburn, GANumerous public reports indicated large hail ranging from dime to golf ball size up to as large as baseball size fell across Gwinnett county. Vehicles were damaged.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

IssuedProductOfficeLasted
May 6, 6:45 AM EDTTornado WatchSPC5 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.1 hours before the alert went out and 79 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 1999-05-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 736 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 1999-05-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 166 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
736 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
690 m above ground
0-6 km bulk shear
62 kt
0-1 km storm-relative helicity
166 m²/s²
0-3 km storm-relative helicity
189 m²/s²
Significant tornado parameter
0.8
Supercell composite
3.0

Open this sounding in Storm Lab

The text

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

000 
TTAA00 KATL 061304 RRA
TORATL
GAC135-061335-

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
904 AM EDT THU MAY 6 1999

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  GWINNETT COUNTY IN NORTHWESTERN GEORGIA

* UNTIL 935 AM EDT

* AT 901 AM EDT... A TORNADO WAS INDICATED BY DOPPLER RADAR NEAR
LILBURN... MOVING NORTHEAST AT 50 MPH.

* SOME LOCATIONS IN OR NEAR THE PATH OF THIS TORNADO ARE...
    LAWRENCEVILLE                   AROUND 910 AM EDT

THIS IS A DANGEROUS STORM SITUATION. MOVE IMMEDIATELY TO A SHELTER
BELOW GROUND...OR TO A SMALL INTERIOR ROOM ON THE LOWEST FLOOR.
AVOID WINDOWS. 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 5, 11:47 PM EDTSevere Thunderstorm WarningFFCCoweta, Fayette33 min
May 5, 11:51 PM EDTSevere Thunderstorm WarningFFCHall49 min
May 6, 12:09 AM EDTSevere Thunderstorm WarningFFCDeKalb, Gwinnett36 min
May 6, 12:44 AM EDTSevere Thunderstorm WarningFFCDade31 min
May 6, 1:15 AM EDTSevere Thunderstorm WarningFFCDade, Walker50 min
May 6, 2:15 AM EDTSevere Thunderstorm WarningFFCWalker35 min
May 6, 2:20 AM EDTSevere Thunderstorm WarningFFCCatoosa, Whitfield35 min
May 6, 3:10 AM EDTSevere Thunderstorm WarningFFCMurray35 min
May 6, 3:29 AM EDTSevere Thunderstorm WarningFFCFannin, Gilmer46 min
May 6, 4:13 AM EDTSevere Thunderstorm WarningFFCFannin, Union32 min
May 6, 4:13 AM EDTSevere Thunderstorm WarningFFCGilmer32 min
May 6, 7:00 AM EDTSevere Thunderstorm WarningFFCPaulding35 min
May 6, 7:06 AM EDTSevere Thunderstorm WarningFFCCarroll, Haralson34 min
May 6, 7:36 AM EDTSevere Thunderstorm WarningFFCPaulding14 min
May 6, 7:38 AM EDTSevere Thunderstorm WarningFFCCarroll32 min
May 6, 7:44 AM EDTSevere Thunderstorm WarningFFCCobb36 min
May 6, 7:49 AM EDTSevere Thunderstorm WarningFFCDouglas36 min
May 6, 8:20 AM EDTSevere Thunderstorm WarningFFCFulton45 min
May 6, 8:42 AM EDTSevere Thunderstorm WarningFFCCobb28 min
May 6, 8:44 AM EDTSevere Thunderstorm WarningFFCDeKalb36 min
May 6, 8:55 AM EDTSevere Thunderstorm WarningFFCGwinnett45 min
May 6, 9:26 AM EDTSevere Thunderstorm WarningFFCBarrow34 min
May 6, 9:29 AM EDTSevere Thunderstorm WarningFFCCoweta36 min
May 6, 9:42 AM EDTSevere Thunderstorm WarningFFCHeard, Troup33 min
May 6, 11:06 AM EDTSevere Thunderstorm WarningFFCHarris34 min
May 6, 11:29 AM EDTSevere Thunderstorm WarningFFCTalbot31 min
May 6, 1:19 PM EDTSevere Thunderstorm WarningFFCTaliaferro31 min
May 6, 1:37 PM EDTSevere Thunderstorm WarningFFCWarren, Wilkes28 min
May 6, 2:59 PM EDTSevere Thunderstorm WarningFFCCrisp36 min

Nearby

Tornado Warnings in Georgia, 1999Every tornado warning in 1999Tornadoes 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.