Alert archive / Georgia / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 187, NWS Atlanta, GA
NWS Atlanta, GA issued this severe thunderstorm warning at Apr 21, 2011, 2:27 AM EDT for 5 counties in Georgia. It was in force for 48 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Apr 21, 2011, 2:27 AM EDT (06:27 UTC)
- Expired
- Apr 21, 2011, 3:15 AM EDT
- In force
- 48 min
- Issued by
- NWS Atlanta, GA
- Area
- Storm-based polygon
Counties Carroll County, GA, Coweta County, GA, Douglas County, GA, Fulton County, GA, Heard County, GA
The radar
The Atlanta radar (KFFC), 38 km from the middle of the area, began a volume at 06:30 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.
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 6.5 hours before the alert went out and 44 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
- -171 J/kg
- Mixed-layer LCL
- 1406 m above ground
- 0-6 km bulk shear
- 17 kt
- 0-1 km storm-relative helicity
- 76 m²/s²
- 0-3 km storm-relative helicity
- 108 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
925
WUUS52 KFFC 210627
SVRFFC
GAC045-077-097-121-149-210715-
/O.NEW.KFFC.SV.W.0187.110421T0627Z-110421T0715Z/
BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
227 AM EDT THU APR 21 2011
THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHERN DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA
SOUTHWESTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA
SOUTHERN CARROLL COUNTY IN NORTHWEST GEORGIA
COWETA COUNTY IN WEST CENTRAL GEORGIA
HEARD COUNTY IN WEST CENTRAL GEORGIA
* UNTIL 315 AM EDT
* AT 225 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED
ALONG A LINE EXTENDING FROM 10 MILES NORTH OF WHITESBURG TO 6 MILES
WEST OF WHITESBURG TO FRANKLIN...MOVING EAST AT 40 MPH.
* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CHATTAHOOCHEE HILL COUNTRY...CORINTH...NEWNAN...PALMETTO...
GRANTVILLE...MORELAND AND SHARPSBURG.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
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 3349 8523 3360 8523 3369 8461 3346 8464
3322 8463 3322 8485 3319 8486 3322 8487
3323 8493 3319 8502 3320 8526 3336 8529
TIME...MOT...LOC 0626Z 271DEG 36KT 3363 8490 3347 8500
3327 8517
$$The office that day
Everything else NWS Atlanta, GA issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:54 AM EDT | Severe Thunderstorm Warning | FFC | Carroll, Haralson | 51 min |
| Apr 21, 2:06 AM EDT | Severe Thunderstorm Warning | FFC | Bartow, Floyd, Polk | 39 min |
| Apr 21, 2:46 AM EDT | Severe Thunderstorm Warning | FFC | Cobb, Douglas, Fulton, Paulding | 44 min |
| Apr 21, 3:08 AM EDT | Severe Thunderstorm Warning | FFC | Cherokee, Dawson, DeKalb, Forsyth, Fulton, Gwinnett | 52 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.