Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 81, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 24, 1999, 6:28 PM EDT for Johnson County, Washington County, Georgia. It was in force for 32 min. 3 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
- Apr 24, 1999, 6:28 PM EDT (22:28 UTC)
- Expired
- Apr 24, 1999, 7:00 PM EDT
- In force
- 32 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Johnson County, GA, Washington County, GA
The radar
The Robins AFB radar (KJGX), 61 km from the middle of the area, began a volume at 22:31 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 |
|---|---|---|---|
| Apr 24, 6:30 PM EDT | Hail 0.75 | Oconee, GA | Dime size hail was indicated in the southeast part of Washington county as the storm re-intensified. |
| Apr 24, 6:45 PM EDT | Hail 1.75 | Wrightsville, GA | Several reports from the public and Johnson county 911 indicated the storm that moved from Washington county across Johnson county produced large hail from dime size to golf ball size. |
| Apr 24, 7:00 PM EDT | Hail 2 | Wrightsville, GA | Two public reports indicated dime to quarter size hail fell in Wrightville and 2 inch diameter hail broke windows in a house and caused damage to a truck just west of Wrightsville. This storm was close behind the first one that moved across the county. |
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, 10.5 hours before the alert went out and 175 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
- 1372 J/kg
- Mixed-layer CIN
- -118 J/kg
- Mixed-layer LCL
- 784 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 125 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KATL 242229 RRA SVRATL GAC167-303-242300- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 628 PM EDT SAT APR 24 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... WESTERN JOHNSON COUNTY IN EAST CENTRAL GEORGIA SOUTHERN WASHINGTON COUNTY IN EAST CENTRAL GEORGIA * UNTIL 700 PM EDT * AT 627 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 6 MILES SOUTHEAST OF OCONEE... MOVING EAST AT 10 MPH. *THE STORM WILL BE 8 MILES EAST OF OCONEE AT 700 PM. 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.
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
Local storm report, Apr 24, 5:40 PM EDT, 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 PM EDT SAT APR 24 1999
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
415 PM UNIDILLA GA 0.75 INCH HAIL
04/24/99 DOOLY
430 PM UNIDILLA GA 0.75 INCH HAIL
04/24/99 DOOLY
536 PM WILLIAMSON GA 1.00 INCH HAIL
04/24/99 PIKE
539 PM WILLIAMSON GA 1.00 INCH HAIL
04/24/99 PIKELocal storm report, Apr 24, 5:40 PM EDT, 48 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
540 PM EDT SAT APR 24 1999
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
415 PM UNIDILLA GA 0.75 INCH HAIL
04/24/99 DOOLY
430 PM UNIDILLA GA 0.75 INCH HAIL
04/24/99 DOOLY
536 PM WILLIAMSON GA 1.00 INCH HAIL
04/24/99 PIKE
539 PM WILLIAMSON GA 1.00 INCH HAIL
04/24/99 PIKEThe office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 24, 2:33 PM EDT | Severe Thunderstorm Warning | FFC | Meriwether, Troup | 32 min |
| Apr 24, 4:19 PM EDT | Severe Thunderstorm Warning | FFC | Dooly, Houston | 36 min |
| Apr 24, 4:54 PM EDT | Severe Thunderstorm Warning | FFC | Haralson, Polk | 36 min |
| Apr 24, 5:19 PM EDT | Severe Thunderstorm Warning | FFC | Dooly | 16 min |
| Apr 24, 5:22 PM EDT | Severe Thunderstorm Warning | FFC | Pike | 33 min |
| Apr 24, 5:58 PM EDT | Severe Thunderstorm Warning | FFC | Washington | 32 min |
| Apr 24, 5:59 PM EDT | Severe Thunderstorm Warning | FFC | Emanuel | 36 min |
| Apr 24, 6:05 PM EDT | Severe Thunderstorm Warning | FFC | Pike | 35 min |
| Apr 24, 6:45 PM EDT | Severe Thunderstorm Warning | FFC | Laurens | 35 min |
| Apr 24, 6:57 PM EDT | Severe Thunderstorm Warning | FFC | Johnson | 33 min |
| Apr 24, 7:28 PM EDT | Severe Thunderstorm Warning | FFC | Johnson, Laurens | 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.