Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 221, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at May 23, 1999, 1:28 PM EDT for Henry County, Rockdale County, Georgia. It was in force for 32 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- May 23, 1999, 1:28 PM EDT (17:28 UTC)
- Expired
- May 23, 1999, 2:00 PM EDT
- In force
- 32 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
Counties Henry County, GA, Rockdale County, GA
The radar
The Atlanta radar (KFFC), 49 km from the middle of the area, began a volume at 17:32 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 5.5 hours before the alert went out and 43 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
- 299 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1083 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -39 m²/s²
- 0-3 km storm-relative helicity
- -42 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 231728 RRA SVRATL GAC151-247-231800- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 128 PM EDT SUN MAY 23 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HENRY COUNTY IN NORTHWESTERN GEORGIA ROCKDALE COUNTY IN NORTHWESTERN GEORGIA * UNTIL 200 PM EDT * AT 126 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 5 MILES WEST OF MAGNET... MOVING EAST AT 25 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... MAGNET AROUND 135 PM EDT... CONYERS AROUND 140 PM EDT... MILSTEAD AROUND 145 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.
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 23, 11:20 AM EDT, 2 hours 8 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 091>098-103>113-231900- NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1120 AM EDT SUN MAY 23 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTH AND CENTRAL GEORGIA LATE THIS AFTERNOON AND TONIGHT. A COLD FRONT WILL MOVE INTO THE TENNESSEE VALLEY OVERNIGHT. A WARM AND MOIST AIRMASS AHEAD OF THIS COLD FRONT...COMBINED WITH AN UPPER LEVEL STORM SYSTEM...WILL PROVIDE THE POTENTIAL FOR SEVERE THUNDERSTORMS. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS NORTH AND CENTRAL GEORGIA THIS AFTERNOON...AS DAYTIME HEATING WARMS THE ATMOSPHERE. A LINE OF STORMS IS LIKELY TO DEVELOP OVER THE TENNESSEE VALLEY LATER TODAY...AND MOVE INTO NORTHWEST GEORGIA LATE THIS AFTERNOON OR THIS EVENING. THE LINE WILL CONTINUE TO MOVE ACROSS NORTH AND CENTRAL GEORGIA OVERNIGHT. THE GREATEST THREAT WITH THESE THUNDERSTORMS WILL BE DAMAGING WINDS...HOWEVER...LARGE HAIL AND ISOLATED TORNADOES ARE ALSO POSSIBLE. SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION THIS AFTERNOON AND TONIGHT.
Special weather statement, May 23, 11:20 AM EDT, 2 hours 8 minutes before
GAZ001>009-011>016-019>025-027-030>039-041>062-066>076-078>086- 091>098-103>113-231900- NORTH AND CENTRAL GEORGIA THUNDERSTORM OUTLOOK NATIONAL WEATHER SERVICE PEACHTREE CITY GA 1120 AM EDT SUN MAY 23 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS OVER NORTH AND CENTRAL GEORGIA LATE THIS AFTERNOON AND TONIGHT. A COLD FRONT WILL MOVE INTO THE TENNESSEE VALLEY OVERNIGHT. A WARM AND MOIST AIRMASS AHEAD OF THIS COLD FRONT...COMBINED WITH AN UPPER LEVEL STORM SYSTEM...WILL PROVIDE THE POTENTIAL FOR SEVERE THUNDERSTORMS. SCATTERED THUNDERSTORMS WILL DEVELOP ACROSS NORTH AND CENTRAL GEORGIA THIS AFTERNOON...AS DAYTIME HEATING WARMS THE ATMOSPHERE. A LINE OF STORMS IS LIKELY TO DEVELOP OVER THE TENNESSEE VALLEY LATER TODAY...AND MOVE INTO NORTHWEST GEORGIA LATE THIS AFTERNOON OR THIS EVENING. THE LINE WILL CONTINUE TO MOVE ACROSS NORTH AND CENTRAL GEORGIA OVERNIGHT. THE GREATEST THREAT WITH THESE THUNDERSTORMS WILL BE DAMAGING WINDS...HOWEVER...LARGE HAIL AND ISOLATED TORNADOES ARE ALSO POSSIBLE. SPOTTERS AND EMERGENCY MANAGEMENT OFFICIALS SHOULD REMAIN ALERT FOR POSSIBLE ACTIVATION THIS AFTERNOON AND TONIGHT.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 22, 10:29 PM EDT | Severe Thunderstorm Warning | FFC | Emanuel, Treutlen | 36 min |
| May 23, 2:10 PM EDT | Severe Thunderstorm Warning | FFC | Henry | 35 min |
| May 23, 2:12 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Fayette | 33 min |
| May 23, 2:30 PM EDT | Severe Thunderstorm Warning | FFC | Newton | 35 min |
| May 23, 2:47 PM EDT | Severe Thunderstorm Warning | FFC | Wilkes | 33 min |
| May 23, 3:40 PM EDT | Severe Thunderstorm Warning | FFC | Greene | 35 min |
| May 23, 5:21 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Fulton | 34 min |
| May 23, 5:35 PM EDT | Severe Thunderstorm Warning | FFC | Cobb, Paulding | 50 min |
| May 23, 5:57 PM EDT | Severe Thunderstorm Warning | FFC | Fulton | 33 min |
| May 23, 6:21 PM EDT | Severe Thunderstorm Warning | FFC | DeKalb | 34 min |
| May 23, 6:24 PM EDT | Severe Thunderstorm Warning | FFC | Pike, Spalding | 36 min |
| May 23, 6:31 PM EDT | Severe Thunderstorm Warning | FFC | Henry, Rockdale | 34 min |
| May 23, 6:41 PM EDT | Severe Thunderstorm Warning | FFC | Barrow, Clarke, Oconee | 34 min |
| May 23, 6:56 PM EDT | Severe Thunderstorm Warning | FFC | Butts, Jasper, Newton | 34 min |
| May 23, 7:09 PM EDT | Severe Thunderstorm Warning | FFC | Gilmer, Gordon, Murray, Pickens | 46 min |
| May 23, 7:09 PM EDT | Severe Thunderstorm Warning | FFC | Dawson | 46 min |
| May 23, 7:30 PM EDT | Severe Thunderstorm Warning | FFC | Morgan | 50 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.