Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 499, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Jul 22, 1999, 4:02 PM EDT for Lumpkin County, Union County, White County, Georgia. It was in force for 33 min. 2 reports 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
- Jul 22, 1999, 4:02 PM EDT (20:02 UTC)
- Expired
- Jul 22, 1999, 4:35 PM EDT
- In force
- 33 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Lumpkin County, GA, Union County, GA, White County, GA
The radar
The Greer radar (KGSP), 156 km from the middle of the area, began a volume at 20:04 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 22, 4:20 PM EDT | Thunderstorm Wind | Helen, GA | The police radio tower in Helen was bent over due to thunderstorm winds. |
| Jul 22, 4:30 PM EDT | Thunderstorm Wind | Dahlonega, GA | Lumpkin county 911 reported trees were blown down. |
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 12:00Z, 8.0 hours before the alert went out and 156 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
- 463 J/kg
- Mixed-layer CIN
- -102 J/kg
- Mixed-layer LCL
- 1197 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- -5 m²/s²
- 0-3 km storm-relative helicity
- 22 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000 TTAA00 KATL 222003 RRA SVRATL GAC187-291-311-222035- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 402 PM EDT THU JUL 22 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... LUMPKIN COUNTY IN NORTHEASTERN GEORGIA UNION COUNTY IN NORTHEASTERN GEORGIA WHITE COUNTY IN NORTHEASTERN GEORGIA * UNTIL 435 PM EDT * AT 402 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 5 MILES EAST OF VOGEL SP... MOVING SOUTHWEST AT 10 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... VOGEL SP AROUND 425 PM EDT... 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.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:05 PM EDT | Severe Thunderstorm Warning | FFC | Jefferson | 35 min |
| Jul 22, 4:25 PM EDT | Severe Thunderstorm Warning | FFC | Newton, Rockdale | 20 min |
| Jul 22, 4:33 PM EDT | Severe Thunderstorm Warning | FFC | Lumpkin | 32 min |
| Jul 22, 5:12 PM EDT | Severe Thunderstorm Warning | FFC | Dawson | 33 min |
| Jul 22, 6:20 PM EDT | Severe Thunderstorm Warning | FFC | Cobb | 35 min |
| Jul 22, 7:01 PM EDT | Severe Thunderstorm Warning | FFC | Sumter | 34 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.