Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 13, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Jan 18, 1999, 5:36 AM EST for Johnson County, Georgia. It was in force for 34 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
- Jan 18, 1999, 5:36 AM EST (10:36 UTC)
- Expired
- Jan 18, 1999, 6:10 AM EST
- In force
- 34 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Johnson County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 18, 6:00 AM EST | Hail 0.75 | Wrightsville, GA | Johnson county 911 reported nickel size hail. |
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 |
|---|---|---|---|
| Jan 18, 5:15 AM EST | Severe Thunderstorm Watch | SPC | 6 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 10.6 hours before the alert went out and 187 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
- 378 J/kg
- Mixed-layer CIN
- -82 J/kg
- Mixed-layer LCL
- 721 m above ground
- 0-6 km bulk shear
- 56 kt
- 0-1 km storm-relative helicity
- 617 m²/s²
- 0-3 km storm-relative helicity
- 700 m²/s²
- Significant tornado parameter
- 1.2
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
999 WUUS1 KATL 181037 RRA SVRATL GAC167-181110- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 536 AM EST MON JAN 18 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... JOHNSON COUNTY IN EAST CENTRAL GEORGIA * UNTIL 610 AM EST * AT 534 AM EST... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 10 MILES SOUTH OF DONOVAN... MOVING NORTHEAST AT 50 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... DONOVAN AROUND 540 AM EST MEEKS AROUND 545 AM EST KITE AROUND 550 AM EST 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 EXTENSION 204. $$ KDF/VM
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 17, 7:31 PM EST | Severe Thunderstorm Warning | FFC | Monroe | 44 min |
| Jan 17, 8:16 PM EST | Severe Thunderstorm Warning | FFC | Laurens | 49 min |
| Jan 17, 8:57 PM EST | Severe Thunderstorm Warning | FFC | Treutlen | 33 min |
| Jan 17, 9:17 PM EST | Severe Thunderstorm Warning | FFC | Emanuel | 48 min |
| Jan 18, 4:24 AM EST | Severe Thunderstorm Warning | FFC | Crisp | 36 min |
| Jan 18, 4:43 AM EST | Severe Thunderstorm Warning | FFC | Floyd, Polk | 47 min |
| Jan 18, 4:45 AM EST | Severe Thunderstorm Warning | FFC | Dodge, Pulaski | 35 min |
| Jan 18, 5:04 AM EST | Severe Thunderstorm Warning | FFC | Laurens | 51 min |
| Jan 18, 5:19 AM EST | Severe Thunderstorm Warning | FFC | Bartow, Cherokee, Gordon, Pickens | 31 min |
| Jan 18, 5:24 AM EST | Severe Thunderstorm Warning | FFC | Wilcox | 31 min |
| Jan 18, 5:39 AM EST | Severe Thunderstorm Warning | FFC | Crisp, Wilcox | 36 min |
| Jan 18, 5:56 AM EST | Severe Thunderstorm Warning | FFC | Jefferson | 34 min |
| Jan 18, 6:00 AM EST | Severe Thunderstorm Warning | FFC | Pulaski | 35 min |
| Jan 18, 7:30 AM EST | Severe Thunderstorm Warning | FFC | Jefferson | 35 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.