Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 53, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Mar 3, 1999, 4:49 AM EST for Forsyth County, Georgia. It was in force for 36 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
- Mar 3, 1999, 4:49 AM EST (09:49 UTC)
- Expired
- Mar 3, 1999, 5:25 AM EST
- In force
- 36 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Forsyth County, GA
The radar
The Atlanta radar (KFFC), 104 km from the middle of the area, began a volume at 09:55 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 |
|---|---|---|---|
| Mar 3, 5:05 AM EST | Thunderstorm Wind | Cumming, GA | The public reported trees and power lines down and hail of unknown size. |
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 00:00Z, 9.8 hours before the alert went out and 101 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 2566 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 241 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 030951 RRA SVRATL GAC117-031025- BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 449 AM EST WED MAR 3 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FORSYTH COUNTY IN NORTHWESTERN GEORGIA * UNTIL 525 AM EST * AT 448 AM EST... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 8 MILES WEST OF CUMMING... MOVING EAST AT 45 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... CUMMING AROUND 455 AM EST MATT AROUND 455 AM EST COAL MOUNTAIN AROUND 500 AM EST CHESTATEE AROUND 510 AM EST OSCARVILLE AROUND 510 AM EST SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 55 MPH... DESTRUCTIVE HAIL AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. IF YOU SEE DAMAGE OR LARGE HAIL...CALL THE NATIONAL WEATHER SERVICE AT 770-486-1133 EXTENSION 2 0 4.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 3, 3:05 AM EST | Severe Thunderstorm Warning | FFC | Carroll, Heard | 50 min |
| Mar 3, 3:24 AM EST | Severe Thunderstorm Warning | FFC | Troup | 36 min |
| Mar 3, 3:54 AM EST | Severe Thunderstorm Warning | FFC | Harris | 36 min |
| Mar 3, 4:00 AM EST | Severe Thunderstorm Warning | FFC | Coweta, Fayette | 35 min |
| Mar 3, 4:24 AM EST | Severe Thunderstorm Warning | FFC | Cherokee, Cobb, Fulton | 36 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.