Alert archive / Georgia / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 182, NWS Atlanta, GA

June 27, 20136 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 27, 2013, 5:33 PM EDT for 6 counties in Georgia. It was in force for 42 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 27, 2013, 5:33 PM EDT (21:33 UTC)
Expired: Jun 27, 2013, 6:15 PM EDT
In force: 42 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Bibb County, GA, Crawford County, GA, Lamar County, GA, Monroe County, GA, Peach County, GA, Upson County, GA

The radar

The Robins AFB radar (KJGX), 57 km from the middle of the area, began a volume at 21:37 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, 9.6 hours before the alert went out and 80 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: 1782 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 682 m above ground
0-6 km bulk shear: 19 kt
0-1 km storm-relative helicity: -19 m²/s²
0-3 km storm-relative helicity: 22 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -0.7

Open this sounding in Storm Lab

The text

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

539 
WUUS52 KFFC 272133
SVRFFC
GAC021-079-171-207-225-293-272215-
/O.NEW.KFFC.SV.W.0182.130627T2133Z-130627T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
533 PM EDT THU JUN 27 2013

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  BIBB COUNTY IN CENTRAL GEORGIA
  CRAWFORD COUNTY IN CENTRAL GEORGIA
  SOUTHERN MONROE COUNTY IN CENTRAL GEORGIA
  NORTHEASTERN PEACH COUNTY IN CENTRAL GEORGIA
  SOUTHERN LAMAR COUNTY IN WEST CENTRAL GEORGIA
  NORTHEASTERN UPSON COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 615 PM EDT

* AT 527 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  CLUSTER OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE 
  WINDS UP TO 70 MPH AND QUARTER SIZED HAIL.  THESE STORMS WERE
  LOCATED ALONG A LINE EXTENDING FROM 11 MILES NORTHEAST OF CULLODEN
  TO CULLODEN TO YATESVILLE...MOVING SOUTHEAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  ROBERTA...PAYNE CITY...MACON AND BYRON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS WITH 
MULTIPLE REPORTS OF DOWNED TREES AND RESULTING DAMAGE. TREES CAN 
EASILY FALL WITH ALREADY WET SOIL. SEEK SHELTER NOW INSIDE A STURDY 
STRUCTURE AND STAY AWAY FROM WINDOWS!

IF YOU SEE WIND DAMAGE...HAIL OR 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. YOU CAN ALSO TWEET YOUR REPORT USING HASHTAG GAWX.

&&

LAT...LON 3278 8416 3298 8433 3302 8418 3298 8410
      3289 8398 3293 8377 3299 8374 3282 8361
      3269 8369 3269 8370 3260 8373 3261 8398
TIME...MOT...LOC 2132Z 316DEG 31KT 3295 8392 3288 8403
          3288 8416

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 27, 2:06 PM EDT	Special Weather Statement	FFC	Laurens	24 min
Jun 27, 2:44 PM EDT	Special Weather Statement	FFC	Montgomery	31 min
Jun 27, 3:15 PM EDT	Special Weather Statement	FFC	Montgomery, Toombs	45 min
Jun 27, 3:45 PM EDT	Special Weather Statement	FFC	Coweta	30 min
Jun 27, 3:55 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Fayette	50 min
Jun 27, 4:30 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Fayette, Lamar, Pike, Spalding	45 min
Jun 27, 5:10 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Lamar, Monroe, Spalding	50 min
Jun 27, 5:18 PM EDT	Special Weather Statement	FFC	Meriwether	27 min
Jun 27, 5:25 PM EDT	Special Weather Statement	FFC	Greene	35 min
Jun 27, 5:56 PM EDT	Special Weather Statement	FFC	Jones	34 min
Jun 27, 6:06 PM EDT	Special Weather Statement	FFC	Talbot, Upson	24 min
Jun 27, 6:12 PM EDT	Special Weather Statement	FFC	Dade, Walker	48 min
Jun 27, 6:34 PM EDT	Special Weather Statement	FFC	Crawford, Peach, Talbot, Taylor	41 min
Jun 27, 6:38 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Heard, Meriwether, Troup	37 min
Jun 27, 6:57 PM EDT	Special Weather Statement	FFC	Chattooga	48 min
Jun 27, 7:15 PM EDT	Special Weather Statement	FFC	Fannin, Gilmer, Murray	45 min
Jun 27, 7:58 PM EDT	Special Weather Statement	FFC	Gordon, Pickens	47 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2013 Every severe thunderstorm warning in 2013

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.