Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 593, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Aug 13, 1999, 5:40 PM EDT for Harris 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
- Aug 13, 1999, 5:40 PM EDT (21:40 UTC)
- Expired
- Aug 13, 1999, 6:15 PM EDT
- In force
- 35 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Harris County, GA
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 13, 6:00 PM EDT | Thunderstorm Wind | Hamilton, GA | Harris county 911 reported several trees and power lines down. |
| Aug 13, 6:25 PM EDT | Thunderstorm Wind | Hamilton, GA | Harris county 911 reported several trees down on the highway. |
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, 9.7 hours before the alert went out and 80 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
- 1845 J/kg
- Mixed-layer CIN
- -55 J/kg
- Mixed-layer LCL
- 1383 m above ground
- 0-6 km bulk shear
- 8 kt
- 0-1 km storm-relative helicity
- 15 m²/s²
- 0-3 km storm-relative helicity
- 19 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 132139 RRA SVRATL GAC145-132215- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 540 PM EDT FRI AUG 13 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... HARRIS COUNTY IN WEST CENTRAL GEORGIA * UNTIL 615 PM EDT * AT 539 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR IN THE VICINITY OF HAMILTON... MOVING SOUTHEAST AT 5 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... MULBERRY GROVE... 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 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, Aug 13, 2:50 PM EDT, 2 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
250 PM EDT FRI AUG 13 1999
TIME(EDT) .....CITY LOCATION.....STATE ...EVENT/REMARKS...
....COUNTY LOCATION....
158 PM KNOXVILLE GA WIND DAMAGE
08/13/99 CRAWFORD CRAWFORD COUNTY SHERIFFS
OFFICE REPORTED TREES DOWN
IN THE CITY OF KNOXVILLE
205 PM DAHLONEGA GA 1.00 INCH HAIL
08/13/99 LUMPKIN SEVERAL REPORTS OF QUARTER
TO GOLFBALL SIZE HAIL IN THE
CITY OF DAHLONEGA
220 PM FORSYTH GA WIND DAMAGE
08/13/99 MONROE MONROE COUNT SHERIFFS OFFICE
REPORTED TREES DOWN ON JOE
CHAMBERS ROAD IN FORSYTH.
OTHER TREES DOWN ON HIGHWAY
18 WEST OF FORSYTH.
240 PM GRAY GA WIND DAMAGE
08/13/99 JONES JONES COUNTY SHERIFFS OFFICE
REPORTED TREES DOWN 10 MILES
NORTH OF THE CITY OF GRAY.The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 12, 8:53 PM EDT | Severe Thunderstorm Warning | FFC | Carroll | 22 min |
| Aug 12, 9:12 PM EDT | Severe Thunderstorm Warning | FFC | Carroll | 33 min |
| Aug 13, 1:39 PM EDT | Severe Thunderstorm Warning | FFC | Crawford | 36 min |
| Aug 13, 1:46 PM EDT | Severe Thunderstorm Warning | FFC | Lumpkin | 34 min |
| Aug 13, 2:03 PM EDT | Severe Thunderstorm Warning | FFC | Monroe | 37 min |
| Aug 13, 2:24 PM EDT | Severe Thunderstorm Warning | FFC | Jones | 36 min |
| Aug 13, 2:38 PM EDT | Severe Thunderstorm Warning | FFC | Taylor | 32 min |
| Aug 13, 2:51 PM EDT | Severe Thunderstorm Warning | FFC | Jasper | 34 min |
| Aug 13, 3:04 PM EDT | Severe Thunderstorm Warning | FFC | Oconee | 36 min |
| Aug 13, 3:10 PM EDT | Severe Thunderstorm Warning | FFC | Taylor | 35 min |
| Aug 13, 3:26 PM EDT | Severe Thunderstorm Warning | FFC | Newton | 34 min |
| Aug 13, 3:33 PM EDT | Severe Thunderstorm Warning | FFC | Henry | 32 min |
| Aug 13, 3:40 PM EDT | Severe Thunderstorm Warning | FFC | Morgan | 35 min |
| Aug 13, 4:04 PM EDT | Severe Thunderstorm Warning | FFC | Meriwether | 36 min |
| Aug 13, 4:12 PM EDT | Severe Thunderstorm Warning | FFC | Dooly | 33 min |
| Aug 13, 4:18 PM EDT | Severe Thunderstorm Warning | FFC | Sumter | 32 min |
| Aug 13, 4:38 PM EDT | Severe Thunderstorm Warning | FFC | Pulaski | 32 min |
| Aug 13, 4:50 PM EDT | Severe Thunderstorm Warning | FFC | Sumter | 35 min |
| Aug 13, 5:35 PM EDT | Severe Thunderstorm Warning | FFC | Gwinnett | 35 min |
| Aug 13, 6:13 PM EDT | Severe Thunderstorm Warning | FFC | Gwinnett | 37 min |
| Aug 13, 6:15 PM EDT | Severe Thunderstorm Warning | FFC | Harris | 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.