Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 121, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at May 6, 1999, 9:42 AM EDT for Heard County, Troup County, Georgia. It was in force for 33 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, 9:42 AM EDT (13:42 UTC)
- Expired
- May 6, 1999, 10:15 AM EDT
- In force
- 33 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Heard County, GA, Troup County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 6, 10:02 AM EDT | Hail 1.75 | La Grange, GA | The public reported hail from marble size up to golf ball size. |
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.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| May 6, 6:45 AM EDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 1.7 hours before the alert went out and 58 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KATL 061342 RRA SVRATL GAC149-285-061415- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 942 AM EDT THU MAY 6 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HEARD COUNTY IN NORTHWESTERN GEORGIA TROUP COUNTY IN WEST CENTRAL GEORGIA * UNTIL 1015 AM EDT * AT 950 AM EDT... A LINE OF SEVERE THUNDERSTORMS WAS INDICATED BY DOPPLER RADAR FROM FRANKLIN TO WEST POINT. THE STORMS WERE MOVING TO THE NORTHEAST AT 50 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE...FRANKLIN AND LA GRANGE. A TORNADO WATCH IS ALSO IN EFFECT IN OR NEAR THE WARNED AREA. SEVERE THUNDERSTORMS OCCASIONALLY NPRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. BE ALERT...BUT REMAIN CALM. IF YOU SEE DAMAGE OR LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE AT 770-486-1133 AT EXTENSION 2 0 4.
What forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
In the hours before
Special weather statement, May 6, 6:05 AM EDT, 3 hours 37 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 091>098-103>113-061115- NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 605 AM EDT THU MAY 6 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTH AND CENTRAL GEORGIA TODAY AND TONIGHT. MOIST UNSTABLE AIR ALREADY OVER NORTH AND CENTRAL GEORGIA WILL BE MAINTAINED BY LOW LEVEL SOUTHERLY WINDS TODAY. MEANWHILE...SURFACE HEATING TODAY...AND THE WINDS ALOFT...WILL PROMOTE UPWARD MOTION AND RAPID DEVELOPMENT OF THUNDERSTORMS. A FEW THUNDERSTORMS COULD BECOME SEVERE...WITH STRONG WINDS AND LARGE HAIL THE PRIMARY THREAT. SPOTTERS AND EMERGENCY MANAGEMENT PERSONNEL SHOULD REMAIN ALERT TO DEVELOPING WEATHER TODAY IN CASE ACTIVATION BECOMES NECESSARY.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 11:47 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Fayette | 33 min |
| May 5, 11:51 PM EDT | Severe Thunderstorm Warning | FFC | Hall | 49 min |
| May 6, 12:09 AM EDT | Severe Thunderstorm Warning | FFC | DeKalb, Gwinnett | 36 min |
| May 6, 12:44 AM EDT | Severe Thunderstorm Warning | FFC | Dade | 31 min |
| May 6, 1:15 AM EDT | Severe Thunderstorm Warning | FFC | Dade, Walker | 50 min |
| May 6, 2:15 AM EDT | Severe Thunderstorm Warning | FFC | Walker | 35 min |
| May 6, 2:20 AM EDT | Severe Thunderstorm Warning | FFC | Catoosa, Whitfield | 35 min |
| May 6, 3:10 AM EDT | Severe Thunderstorm Warning | FFC | Murray | 35 min |
| May 6, 3:29 AM EDT | Severe Thunderstorm Warning | FFC | Fannin, Gilmer | 46 min |
| May 6, 4:13 AM EDT | Severe Thunderstorm Warning | FFC | Fannin, Union | 32 min |
| May 6, 4:13 AM EDT | Severe Thunderstorm Warning | FFC | Gilmer | 32 min |
| May 6, 7:00 AM EDT | Severe Thunderstorm Warning | FFC | Paulding | 35 min |
| May 6, 7:06 AM EDT | Severe Thunderstorm Warning | FFC | Carroll, Haralson | 34 min |
| May 6, 7:36 AM EDT | Severe Thunderstorm Warning | FFC | Paulding | 14 min |
| May 6, 7:38 AM EDT | Severe Thunderstorm Warning | FFC | Carroll | 32 min |
| May 6, 7:44 AM EDT | Severe Thunderstorm Warning | FFC | Cobb | 36 min |
| May 6, 7:49 AM EDT | Severe Thunderstorm Warning | FFC | Douglas | 36 min |
| May 6, 8:20 AM EDT | Severe Thunderstorm Warning | FFC | Fulton | 45 min |
| May 6, 8:42 AM EDT | Severe Thunderstorm Warning | FFC | Cobb | 28 min |
| May 6, 8:44 AM EDT | Severe Thunderstorm Warning | FFC | DeKalb | 36 min |
| May 6, 8:55 AM EDT | Severe Thunderstorm Warning | FFC | Gwinnett | 45 min |
| May 6, 9:04 AM EDT | Tornado Warning | FFC | Gwinnett | 31 min |
| May 6, 9:26 AM EDT | Severe Thunderstorm Warning | FFC | Barrow | 34 min |
| May 6, 9:29 AM EDT | Severe Thunderstorm Warning | FFC | Coweta | 36 min |
| May 6, 11:06 AM EDT | Severe Thunderstorm Warning | FFC | Harris | 34 min |
| May 6, 11:29 AM EDT | Severe Thunderstorm Warning | FFC | Talbot | 31 min |
| May 6, 1:19 PM EDT | Severe Thunderstorm Warning | FFC | Taliaferro | 31 min |
| May 6, 1:37 PM EDT | Severe Thunderstorm Warning | FFC | Warren, Wilkes | 28 min |
| May 6, 2:59 PM EDT | Severe Thunderstorm Warning | FFC | Crisp | 36 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.