Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 600, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 14, 1999, 4:22 PM EDT for Toombs 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
- Aug 14, 1999, 4:22 PM EDT (20:22 UTC)
- Expired
- Aug 14, 1999, 4:55 PM EDT
- In force
- 33 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Toombs County, GA
The radar
The Robins AFB radar (KJGX), 114 km from the middle of the area, began a volume at 20:25 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
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 14, 4:30 PM EDT | Thunderstorm Wind | Lyons, GA | Toombs county 911 reported trees blown down in Lyons, and county-wide power outages. |
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
Jacksonville, FL (KJAX), launched 12:00Z, 8.4 hours before the alert went out and 190 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
- 1234 J/kg
- Mixed-layer CIN
- -80 J/kg
- Mixed-layer LCL
- 1144 m above ground
- 0-6 km bulk shear
- 2 kt
- 0-1 km storm-relative helicity
- 22 m²/s²
- 0-3 km storm-relative helicity
- 61 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 142022 RRA SVRATL GAC279-142055- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 422 PM EDT SAT AUG 14 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... TOOMBS IN SOUTHEASTERN GEORGIA * UNTIL 455 PM EDT * AT 421 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 5 MILES SOUTHEAST OF VIDALIA OR 2 MILES NORTH OF SOUTH THOMPSON... MOVING SOUTHEAST AT 10 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... SOUTH THOMPSON... 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 |
|---|---|---|---|---|
| Aug 13, 9:31 PM EDT | Severe Thunderstorm Warning | FFC | Fannin, Union | 34 min |
| Aug 14, 12:25 AM EDT | Severe Thunderstorm Warning | FFC | Gilmer, Pickens | 35 min |
| Aug 14, 3:37 PM EDT | Severe Thunderstorm Warning | FFC | Emanuel, Treutlen | 33 min |
| Aug 14, 4:06 PM EDT | Severe Thunderstorm Warning | FFC | Montgomery | 34 min |
| Aug 14, 4:47 PM EDT | Severe Thunderstorm Warning | FFC | Wheeler | 18 min |
| Aug 14, 4:50 PM EDT | Severe Thunderstorm Warning | FFC | Montgomery | 20 min |
| Aug 14, 5:43 PM EDT | Severe Thunderstorm Warning | FFC | Dodge | 32 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.