Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 358, NWS Atlanta, GA

June 21, 2011Oglethorpe County, Wilkes County, Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 21, 2011, 6:04 PM EDT for Oglethorpe County, Wilkes County, Georgia. It was in force for 41 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: Jun 21, 2011, 6:04 PM EDT (22:04 UTC)
Expired: Jun 21, 2011, 6:45 PM EDT
In force: 41 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Oglethorpe County, GA, Wilkes County, GA

The radar

The Greer radar (KGSP), 120 km from the middle of the area, began a volume at 22:04 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, 10.1 hours before the alert went out and 166 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: 1450 J/kg
Mixed-layer CIN: -129 J/kg
Mixed-layer LCL: 1187 m above ground
0-6 km bulk shear: 12 kt
0-1 km storm-relative helicity: -43 m²/s²
0-3 km storm-relative helicity: -64 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

166 
WUUS52 KFFC 212204
SVRFFC
GAC221-317-212245-
/O.NEW.KFFC.SV.W.0358.110621T2204Z-110621T2245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
604 PM EDT TUE JUN 21 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN WILKES COUNTY IN EAST CENTRAL GEORGIA
  EASTERN OGLETHORPE COUNTY IN NORTHEAST GEORGIA

* UNTIL 645 PM EDT

* AT 603 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 6 MILES
  NORTHWEST OF RAYLE...MOVING NORTH AT 15 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  TIGNALL.

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 3374 8290 3381 8304 3404 8296 3401 8293
      3402 8291 3399 8286 3400 8283 3398 8279
      3399 8266 3397 8263 3386 8261
TIME...MOT...LOC 2205Z 200DEG 15KT 3386 8296

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 5:50 PM EDT	Special Weather Statement	FFC	Chattooga, Dade, Floyd, Walker	55 min
Jun 21, 6:02 PM EDT	Severe Thunderstorm Warning	FFC	Catoosa, Chattooga, Dade, Walker	43 min
Jun 21, 6:28 PM EDT	Special Weather Statement	FFC	Twiggs, Wilkinson	47 min
Jun 21, 6:37 PM EDT	Severe Thunderstorm Warning	FFC	Twiggs, Wilkinson	38 min
Jun 21, 6:45 PM EDT	Special Weather Statement	FFC	Catoosa	30 min
Jun 21, 6:46 PM EDT	Special Weather Statement	FFC	Bleckley	29 min
Jun 21, 6:49 PM EDT	Special Weather Statement	FFC	Oglethorpe, Wilkes	41 min
Jun 21, 6:59 PM EDT	Special Weather Statement	FFC	Hancock	46 min
Jun 21, 7:07 PM EDT	Severe Thunderstorm Warning	FFC	Hancock, Washington	38 min
Jun 21, 7:12 PM EDT	Severe Thunderstorm Warning	FFC	Bleckley, Twiggs, Wilkinson	32 min
Jun 21, 7:25 PM EDT	Special Weather Statement	FFC	Murray	50 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.