Alert archive / Georgia / Severe Thunderstorm Warnings in 1999
Severe Thunderstorm Warning 481, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Jul 11, 1999, 5:48 PM EDT for Emanuel County, Georgia. It was in force for 32 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
- Jul 11, 1999, 5:48 PM EDT (21:48 UTC)
- Expired
- Jul 11, 1999, 6:20 PM EDT
- In force
- 32 min
- Issued by
- NWS Atlanta, GA
- Area
- Whole counties
County Emanuel County, GA
The radar
The Robins AFB radar (KJGX), 99 km from the middle of the area, began a volume at 21:54 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 |
|---|---|---|---|
| Jul 11, 5:50 PM EDT | Hail 0.75 | Swainsboro, GA | The public reported dime 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 nearest sounding before it
Charleston AFB, SC (KCHS), launched 12:00Z, 9.8 hours before the alert went out and 218 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
- 2237 J/kg
- Mixed-layer CIN
- -16 J/kg
- Mixed-layer LCL
- 552 m above ground
- 0-6 km bulk shear
- 10 kt
- 0-1 km storm-relative helicity
- 5 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.
053 WUUS1 KATL 112150 SVRATL GAC107-112220- BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 548 PM EDT SUN JUL 11 1999 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EMANUEL COUNTY IN EAST CENTRAL GEORGIA * UNTIL 620 PM EDT * AT 547 PM EDT... A SEVERE THUNDERSTORM WAS INDICATED BY DOPPLER RADAR 7 MILES WEST OF TWIN CITY... MOVING EAST AT 25 MPH. * SOME LOCATIONS IN OR NEAR THE PATH OF THIS STORM ARE... CANOOCHEE AROUND 605 PM EDT... TWIN CITY AROUND 605 PM EDT... GARFIELD AROUND 615 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, Jul 11, 4:30 PM EDT, 1 hour 18 minutes before
GAZ038-039-050-051-060>062-072>076-082>086-094>098-105>113-112230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 430 PM EDT SUN JUL 11 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THIS AFTERNOON AND TONIGHT FOR PORTIONS OF NORTHEAST AND CENTRAL GEORGIA. IT INCLUDES AN AREA EAST OF A LINE FROM HIAWASSE IN TOWNS COUNTY TO CANTON IN CHEROKEE COUNTY TO FRANKLIN IN HEARD COUNTY. AN UPPER LEVEL DISTURBANCE MOVING EAST ACROSS GEORGIA ALONG WITH THE MOIST AND UNSTABLE AIR WILL CAUSE THUNDERSTORMS. SOME OF THESE STORMS MIGHT REACH SEVERE LIMITS BY PRODUCING STRONG GUSTY WINDS AND LARGE HAIL. EMERGENCY MANAGEMENT PERSONNEL AND SPOTTERS SHOULD BE ON THE ALERT FOR POSSIBLE ACTIVATION.
Special weather statement, Jul 11, 4:30 PM EDT, 1 hour 18 minutes before
GAZ038-039-050-051-060>062-072>076-082>086-094>098-105>113-112230- SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 430 PM EDT SUN JUL 11 1999 THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS FOR THIS AFTERNOON AND TONIGHT FOR PORTIONS OF NORTHEAST AND CENTRAL GEORGIA. IT INCLUDES AN AREA EAST OF A LINE FROM HIAWASSE IN TOWNS COUNTY TO CANTON IN CHEROKEE COUNTY TO FRANKLIN IN HEARD COUNTY. AN UPPER LEVEL DISTURBANCE MOVING EAST ACROSS GEORGIA ALONG WITH THE MOIST AND UNSTABLE AIR WILL CAUSE THUNDERSTORMS. SOME OF THESE STORMS MIGHT REACH SEVERE LIMITS BY PRODUCING STRONG GUSTY WINDS AND LARGE HAIL. EMERGENCY MANAGEMENT PERSONNEL AND SPOTTERS SHOULD BE ON THE ALERT FOR POSSIBLE ACTIVATION.
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 11, 3:31 PM EDT | Severe Thunderstorm Warning | FFC | Jasper, Newton | 34 min |
| Jul 11, 5:09 PM EDT | Severe Thunderstorm Warning | FFC | Meriwether | 36 min |
| Jul 11, 5:50 PM EDT | Flash Flood Warning | FFC | Fannin | 3 hr |
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.