Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 268, NWS Atlanta, GA

May 27, 20114 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at May 27, 2011, 2:08 PM EDT for 4 counties in Georgia. It was in force for 52 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: May 27, 2011, 2:08 PM EDT (18:08 UTC)
Expired: May 27, 2011, 3:00 PM EDT
In force: 52 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Hancock County, GA, Taliaferro County, GA, Warren County, GA, Wilkes County, GA

The radar

The Robins AFB radar (KJGX), 115 km from the middle of the area, began a volume at 18:09 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, 6.1 hours before the alert went out and 170 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: 778 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 537 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 62 m²/s²
0-3 km storm-relative helicity: 68 m²/s²
Significant tornado parameter: 0.3
Supercell composite: 2.2

Open this sounding in Storm Lab

The text

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

915 
WUUS52 KFFC 271808
SVRFFC
GAC141-265-301-317-271900-
/O.NEW.KFFC.SV.W.0268.110527T1808Z-110527T1900Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
208 PM EDT FRI MAY 27 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN HANCOCK COUNTY IN EAST CENTRAL GEORGIA
  SOUTHEASTERN TALIAFERRO COUNTY IN EAST CENTRAL GEORGIA
  WESTERN WARREN COUNTY IN EAST CENTRAL GEORGIA
  SOUTHEASTERN WILKES COUNTY IN EAST CENTRAL GEORGIA

* UNTIL 300 PM EDT

* AT 204 PM 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 9 MILES EAST OF SHARON TO 7 MILES SOUTH
  OF SHARON TO 6 MILES NORTHWEST OF SPARTA...MOVING EAST AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  NORWOOD...CAMAK AND WARRENTON.

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 3363 8255 3363 8260 3360 8264 3346 8258
      3322 8287 3332 8309 3347 8295 3367 8268
      3368 8249 3365 8249
TIME...MOT...LOC 1808Z 259DEG 12KT 3359 8262 3347 8282
          3335 8301

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
May 26, 9:37 PM EDT	Special Weather Statement	FFC	Jefferson, Johnson	38 min
May 26, 9:39 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Montgomery, Toombs, Treutlen	51 min
May 26, 9:49 PM EDT	Special Weather Statement	FFC	Emanuel	26 min
May 26, 10:04 PM EDT	Severe Thunderstorm Warning	FFC	Emanuel, Jefferson	41 min
May 27, 12:53 AM EDT	Special Weather Statement	FFC	Fayette	22 min
May 27, 1:37 AM EDT	Special Weather Statement	FFC	Washington	38 min
May 27, 2:13 AM EDT	Special Weather Statement	FFC	Johnson	32 min
May 27, 2:17 AM EDT	Special Weather Statement	FFC	Coweta	43 min
May 27, 2:26 AM EDT	Special Weather Statement	FFC	Coweta	34 min
May 27, 2:35 AM EDT	Special Weather Statement	FFC	Jefferson	40 min
May 27, 2:50 AM EDT	Special Weather Statement	FFC	DeKalb, Fulton	2 hr
May 27, 2:55 AM EDT	Special Weather Statement	FFC	Coweta, Fayette	50 min
May 27, 4:49 AM EDT	Flash Flood Warning	FFC	DeKalb, Fulton	90 min
May 27, 10:09 AM EDT	Special Weather Statement	FFC	Jefferson	36 min
May 27, 11:32 AM EDT	Special Weather Statement	FFC	Telfair	28 min
May 27, 12:28 PM EDT	Special Weather Statement	FFC	Taliaferro	32 min
May 27, 1:01 PM EDT	Special Weather Statement	FFC	Wilkes	29 min
May 27, 1:16 PM EDT	Special Weather Statement	FFC	Taliaferro, Wilkes	59 min
May 27, 1:44 PM EDT	Special Weather Statement	FFC	Bibb, Jones	31 min
May 27, 2:00 PM EDT	Special Weather Statement	FFC	Taliaferro	30 min
May 27, 2:21 PM EDT	Special Weather Statement	FFC	Baldwin	24 min
May 27, 2:59 PM EDT	Special Weather Statement	FFC	Glascock, Hancock, Warren	46 min
May 27, 3:44 PM EDT	Special Weather Statement	FFC	Glascock, Hancock, Taliaferro, Warren	46 min
May 27, 4:02 PM EDT	Special Weather Statement	FFC	Wilkinson	28 min
May 27, 4:32 PM EDT	Special Weather Statement	FFC	Wilkinson	43 min
May 27, 4:38 PM EDT	Severe Thunderstorm Warning	FFC	Laurens, Wilkinson	52 min
May 27, 5:09 PM EDT	Special Weather Statement	FFC	Emanuel	21 min
May 27, 5:27 PM EDT	Special Weather Statement	FFC	Johnson	48 min
May 27, 5:29 PM EDT	Severe Thunderstorm Warning	FFC	Laurens	46 min
May 27, 5:38 PM EDT	Severe Thunderstorm Warning	FFC	Jefferson, Johnson, Washington	33 min
May 27, 5:51 PM EDT	Special Weather Statement	FFC	Telfair	39 min
May 27, 6:14 PM EDT	Special Weather Statement	FFC	Emanuel	46 min
May 27, 6:25 PM EDT	Severe Thunderstorm Warning	FFC	Laurens, Treutlen	50 min
May 27, 6:56 PM EDT	Special Weather Statement	FFC	Montgomery, Toombs	49 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.