Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 495, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Jul 21, 1999, 6:15 PM EDT for Fayette County, Georgia. It was in force for 35 min. 2 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
- Jul 21, 1999, 6:15 PM EDT (22:15 UTC)
- Expired
- Jul 21, 1999, 6:50 PM EDT
- In force
- 35 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Fayette County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jul 21, 6:40 PM EDT | Thunderstorm Wind | Peachtree City, GA | Fayette county 911 reported trees blown down in the south part of the county. |
| Jul 21, 6:45 PM EDT | Hail 0.75 | Peachtree City, GA |
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, 10.3 hours before the alert went out and 5 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
- 316 J/kg
- Mixed-layer CIN
- -76 J/kg
- Mixed-layer LCL
- 1101 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- -17 m²/s²
- 0-3 km storm-relative helicity
- -13 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 212217 RRA SVRATL GAC113-212250- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 615 PM EDT WED JUL 21 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... FAYETTE COUNTY IN NORTHWESTERN GEORGIA * UNTIL 650 PM EDT * AT 614 PM EDT... PUBLIC REPORTED DIME SIZE HAIL IN THE VICINITY OF SANDY CREEK...ABOUT 10 MILES NORTH OF PEACHTREE CITY...MOVING SOUTH AT 5 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... SANDY CREEK AROUND 615 PM EDT... TYRONE AROUND 635 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
Local storm report, Jul 21, 6:00 PM EDT, 15 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
600 PM EDT WED JUL 21 1999
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
430 PM DAWSONVILLE GA WIND DAMAGE
07/21/99 DAWSON TREES BLOWN DOWN
440 PM 3 SE JEFFERSON GA WIND DAMAGE
07/21/99 JACKSON TREES BLOWN DOWN
500 PM 8 NE CANTON GA WIND DAMAGE
07/21/99 CHEROKEE TREES BLOWN DOWN
553 PM STOCKBRIDGE GA WIND DAMAGE
07/21/99 HENRY POWER LINES BLOWN DOWNThe office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 3:16 PM EDT | Severe Thunderstorm Warning | FFC | Hall | 34 min |
| Jul 21, 4:14 PM EDT | Severe Thunderstorm Warning | FFC | Dawson, Lumpkin | 36 min |
| Jul 21, 5:25 PM EDT | Severe Thunderstorm Warning | FFC | Clayton, Henry | 35 min |
| Jul 21, 6:05 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Fulton | 35 min |
| Jul 21, 6:24 PM EDT | Severe Thunderstorm Warning | FFC | Cobb | 36 min |
| Jul 21, 6:42 PM EDT | Severe Thunderstorm Warning | FFC | Coweta, Spalding | 33 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.