Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 483, NWS Atlanta, GA

September 22, 2011Carroll County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Sep 22, 2011, 2:10 PM EDT for Carroll County, Georgia. It was in force for 35 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: Sep 22, 2011, 2:10 PM EDT (18:10 UTC)
Expired: Sep 22, 2011, 2:45 PM EDT
In force: 35 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

County Carroll County, GA

The radar

The Atlanta radar (KFFC), 68 km from the middle of the area, began a volume at 18:10 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 12:00Z, 6.2 hours before the alert went out and 73 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 1248 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 682 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: 46 m²/s²
0-3 km storm-relative helicity: 44 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

393 
WUUS52 KFFC 221810
SVRFFC
GAC045-221845-
/O.NEW.KFFC.SV.W.0483.110922T1810Z-110922T1845Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
210 PM EDT THU SEP 22 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WEST CENTRAL CARROLL COUNTY IN NORTHWEST GEORGIA

* UNTIL 245 PM EDT

* AT 206 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED HAIL...AND
  DAMAGING WINDS UP TO 60 MPH.  THIS STORM WAS LOCATED NEAR MOUNT
  ZION...MOVING NORTHEAST AT 5 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO JOHN
  TANNER STATE PARK.

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 3366 8526 3368 8521 3368 8520 3356 8511
      3351 8524 3357 8531
TIME...MOT...LOC 1810Z 224DEG 6KT 3360 8522

$$

The office that day

Everything else NWS Atlanta, GA issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Sep 22, 2:28 AM EDT	Special Weather Statement	FFC	Banks	62 min
Sep 22, 2:58 AM EDT	Special Weather Statement	FFC	Coweta	47 min
Sep 22, 6:42 AM EDT	Special Weather Statement	FFC	Cherokee	63 min
Sep 22, 7:15 AM EDT	Special Weather Statement	FFC	Gilmer	45 min
Sep 22, 1:33 PM EDT	Special Weather Statement	FFC	Laurens	42 min
Sep 22, 2:01 PM EDT	Special Weather Statement	FFC	Haralson	44 min
Sep 22, 2:32 PM EDT	Special Weather Statement	FFC	Montgomery, Treutlen	43 min
Sep 22, 2:49 PM EDT	Special Weather Statement	FFC	Cherokee	26 min
Sep 22, 2:54 PM EDT	Special Weather Statement	FFC	Floyd	36 min
Sep 22, 3:01 PM EDT	Special Weather Statement	FFC	Fayette	29 min
Sep 22, 3:09 PM EDT	Special Weather Statement	FFC	Dawson	36 min
Sep 22, 3:11 PM EDT	Special Weather Statement	FFC	Toombs	49 min
Sep 22, 3:21 PM EDT	Special Weather Statement	FFC	Whitfield	39 min
Sep 22, 3:39 PM EDT	Special Weather Statement	FFC	Coweta, Fayette	66 min
Sep 22, 4:30 PM EDT	Flash Flood Warning	FFC	Coweta, Fayette	3 hr
Sep 22, 5:23 PM EDT	Special Weather Statement	FFC	Cherokee, Pickens	37 min
Sep 22, 5:38 PM EDT	Special Weather Statement	FFC	Dawson, Lumpkin	37 min
Sep 22, 6:07 PM EDT	Special Weather Statement	FFC	Troup	38 min
Sep 22, 6:18 PM EDT	Special Weather Statement	FFC	Dawson, Forsyth	42 min
Sep 22, 6:39 PM EDT	Flash Flood Warning	FFC	Cherokee, Dawson, Forsyth	4 hr
Sep 22, 6:46 PM EDT	Special Weather Statement	FFC	Troup	44 min
Sep 22, 7:06 PM EDT	Special Weather Statement	FFC	Henry	24 min
Sep 22, 7:17 PM EDT	Special Weather Statement	FFC	Lumpkin	43 min
Sep 22, 7:35 PM EDT	Special Weather Statement	FFC	Hall	25 min
Sep 22, 7:42 PM EDT	Special Weather Statement	FFC	Troup	63 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011 Every 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.