Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 192, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 25, 2011, 4:57 PM EDT for 4 counties in Georgia. It was in force for 33 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Apr 25, 2011, 4:57 PM EDT (20:57 UTC)
- Expired
- Apr 25, 2011, 5:30 PM EDT
- In force
- 33 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Dawson County, GA, Forsyth County, GA, Gwinnett County, GA, Hall County, GA
The radar
The Atlanta radar (KFFC), 116 km from the middle of the area, began a volume at 20:58 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 |
|---|---|---|---|
| Apr 25, 5:00 PM EDT | HAIL 0.75 | Flowery Branch, GA | PUBLIC REPORTED LIMA BEAN TO PENNY SIZED HAIL IN FLOWERY BRANCH. |
| Apr 25, 5:20 PM EDT | TSTM WND DMG | 5 Nnw Flowery Branch, GA | FORSYTH COUNTY EMERGENCY MANAGEMENT RELAYED REPORTS OF A FEW DOWNED TREES AND POWERLINES AROUND HWY 369 IN EASTERN FORSYTH COUNTY. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.0 hours before the alert went out and 113 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
- 1169 J/kg
- Mixed-layer CIN
- -37 J/kg
- Mixed-layer LCL
- 772 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 47 m²/s²
- 0-3 km storm-relative helicity
- 14 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
441 WUUS52 KFFC 252057 SVRFFC GAC085-117-135-139-252130- /O.NEW.KFFC.SV.W.0192.110425T2057Z-110425T2130Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE PEACHTREE CITY GA 457 PM EDT MON APR 25 2011 THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... EXTREME SOUTHEASTERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA NORTHEASTERN FORSYTH COUNTY IN NORTH CENTRAL GEORGIA NORTH CENTRAL GWINNETT COUNTY IN NORTH CENTRAL GEORGIA SOUTHWESTERN HALL COUNTY IN NORTH CENTRAL GEORGIA * UNTIL 530 PM EDT * AT 454 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR REST HAVEN...MOVING NORTH AT 35 MPH. * OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FLOWERY BRANCH...OAKWOOD AND GAINESVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF ON OR NEAR LAKE LANIER...GET OUT OF THE WATER IMMEDIATELY AND MOVE TO SAFE SHELTER INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE AS FAR AS 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM! IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT UNTIL THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. && LAT...LON 3441 8400 3434 8379 3411 8396 3414 8405 TIME...MOT...LOC 2057Z 202DEG 29KT 3418 8399 $$
1 follow-up statement
942 WWUS52 KFFC 252105 SVSFFC SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE PEACHTREE CITY GA 505 PM EDT MON APR 25 2011 GAC135-252115- /O.CAN.KFFC.SV.W.0192.000000T0000Z-110425T2130Z/ GWINNETT GA- 505 PM EDT MON APR 25 2011 ...THE SEVERE THUNDERSTORM WARNING FOR EXTREME NORTH CENTRAL GWINNETT COUNTY IS CANCELLED... LAT...LON 3418 8392 3420 8402 3441 8400 3434 8379 TIME...MOT...LOC 2105Z 203DEG 28KT 3422 8396 $$ GAC085-117-139-252130- /O.CON.KFFC.SV.W.0192.000000T0000Z-110425T2130Z/ DAWSON GA-FORSYTH GA-HALL GA- 505 PM EDT MON APR 25 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 530 PM EDT FOR WEST CENTRAL HALL...NORTHEASTERN FORSYTH AND EXTREME SOUTHEASTERN DAWSON COUNTIES... AT 503 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZED HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR AQUALAND PARK...MOVING NORTHEAST AT 30 MPH. OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO OSCARVILLE...OAKWOOD...CHESTATEE AND WAR HILL PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF ON OR NEAR LAKE LANIER...GET OUT OF THE WATER IMMEDIATELY AND MOVE TO SAFE SHELTER INDOORS OR INSIDE A VEHICLE. REMEMBER...LIGHTNING CAN STRIKE AS FAR AS 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. MOVE TO SAFE SHELTER NOW. DON'T BE CAUGHT ON THE WATER IN A THUNDERSTORM! IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT UNTIL AFTER THE STORM HAS PASSED...AND THEN CALL THE NATIONAL WEATHER SERVICE TOLL FREE AT 1 8 6 6 7 6 3 4 4 6 6. && LAT...LON 3418 8392 3420 8402 3441 8400 3434 8379 TIME...MOT...LOC 2105Z 203DEG 28KT 3422 8396 $$
The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 25, 3:19 PM EDT | Severe Thunderstorm Warning | FFC | Lumpkin | 41 min |
| Apr 25, 3:20 PM EDT | Severe Thunderstorm Warning | FFC | Cherokee, Forsyth, Fulton | 25 min |
| Apr 25, 7:14 PM EDT | Severe Thunderstorm Warning | FFC | Harris | 46 min |
Nearby
Severe Thunderstorm Warnings in Georgia, 2011Every severe thunderstorm warning in 2011
Sources
The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.