Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 392, NWS Atlanta, GA

June 26, 20118 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 26, 2011, 6:35 PM EDT for 8 counties in Georgia. It was in force for 40 min. 5 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 26, 2011, 6:35 PM EDT (22:35 UTC)
Expired: Jun 26, 2011, 7:15 PM EDT
In force: 40 min
Issued by: NWS Atlanta, GA
Area: Storm-based polygon

Counties Cherokee County, GA, Cobb County, GA, Dawson County, GA, DeKalb County, GA, Forsyth County, GA, Fulton County, GA, Gwinnett County, GA, Pickens County, GA

The radar

The Atlanta radar (KFFC), 102 km from the middle of the area, began a volume at 22:38 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.

What was reported inside it

Time	Report	Where	Remark
Jun 26, 6:35 PM EDT	TSTM WND DMG	Chamblee, GA	ONE DOWNED TREE CAUSED DAMAGE TO A HOUSE AND TRUCK.
Jun 26, 6:35 PM EDT	HAIL 0.25	Chamblee, GA
Jun 26, 7:05 PM EDT	TSTM WND DMG	Cumming, GA	9-10 TREES DOWN.
Jun 26, 7:15 PM EDT	TSTM WND DMG	Chamblee, GA	MORE THAN A DOZEN TREES DOWN. DETAILS UNAVAILBLE DUE TO CALL VOLUME.
Jun 26, 7:20 PM EDT	TSTM WND DMG	3 Se Gresham Park, GA	TWO TREES BLOWN DOWN...ONE TAKING DOWN A POWER LINE.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 26, 1:36 PM EDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.6 hours before the alert went out and 99 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: 1451 J/kg
Mixed-layer CIN: -63 J/kg
Mixed-layer LCL: 1040 m above ground
0-6 km bulk shear: 10 kt
0-1 km storm-relative helicity: 40 m²/s²
0-3 km storm-relative helicity: 34 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.

222 
WUUS52 KFFC 262235
SVRFFC
GAC057-067-085-089-117-121-135-227-262315-
/O.NEW.KFFC.SV.W.0392.110626T2235Z-110626T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
635 PM EDT SUN JUN 26 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN COBB COUNTY IN NORTH CENTRAL GEORGIA
  DAWSON COUNTY IN NORTH CENTRAL GEORGIA
  DEKALB COUNTY IN NORTH CENTRAL GEORGIA
  FORSYTH COUNTY IN NORTH CENTRAL GEORGIA
  NORTHEASTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN GWINNETT COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 715 PM EDT

* AT 633 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS.  THESE STORMS WERE LOCATED ALONG A
  LINE EXTENDING FROM 13 MILES NORTHWEST OF DAWSONVILLE TO 9 MILES
  WEST OF DAWSONVILLE TO MOUNTAIN PARK TO 7 MILES SOUTHWEST OF
  SMYRNA...MOVING EAST AT 35 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO FREE
  HOME...ROSWELL...MILTON...ALPHARETTA...SANDY SPRINGS...DUNWOODY...
  BUCKHEAD...MIDTOWN...ATLANTA...GRANT PARK-ZOO ATLANTA...CHAMBLEE...
  CUMMING...DORAVILLE...JOHNS CREEK...DRUID HILLS...NORCROSS...
  BERKELEY LAKE...DECATUR...DULUTH...AVONDALE ESTATES...TUCKER...
  CLARKSTON...SUWANEE...SUGAR HILL...PINE LAKE...LILBURN...BUFORD...
  STONE MOUNTAIN AND REST HAVEN.

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.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 900 PM EDT SUNDAY
EVENING FOR NORTHERN GEORGIA.

&&

LAT...LON 3454 8419 3450 8415 3442 8398 3435 8398
      3428 8393 3419 8399 3418 8406 3416 8406
      3413 8397 3404 8400 3363 8424 3378 8452
      3375 8457 3381 8462 3407 8442 3443 8432
      3456 8434 3457 8426 3461 8419
TIME...MOT...LOC 2235Z 273DEG 32KT 3454 8428 3443 8426
          3412 8436 3379 8455

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 26, 11:07 AM EDT	Severe Thunderstorm Warning	FFC	Walker	23 min
Jun 26, 12:01 PM EDT	Special Weather Statement	FFC	Chattooga	29 min
Jun 26, 2:30 PM EDT	Special Weather Statement	FFC	Marion	30 min
Jun 26, 2:46 PM EDT	Special Weather Statement	FFC	Polk	14 min
Jun 26, 3:06 PM EDT	Severe Thunderstorm Warning	FFC	Forsyth, Hall	24 min
Jun 26, 3:08 PM EDT	Severe Thunderstorm Warning	FFC	Macon, Schley, Taylor	37 min
Jun 26, 3:32 PM EDT	Special Weather Statement	FFC	Hall	28 min
Jun 26, 3:36 PM EDT	Special Weather Statement	FFC	Sumter	24 min
Jun 26, 3:40 PM EDT	Special Weather Statement	FFC	Hall	20 min
Jun 26, 3:47 PM EDT	Severe Thunderstorm Warning	FFC	Hall	28 min
Jun 26, 3:54 PM EDT	Special Weather Statement	FFC	Emanuel	36 min
Jun 26, 3:55 PM EDT	Special Weather Statement	FFC	Dade	50 min
Jun 26, 3:57 PM EDT	Special Weather Statement	FFC	Harris, Muscogee	33 min
Jun 26, 4:00 PM EDT	Special Weather Statement	FFC	Sumter	15 min
Jun 26, 4:08 PM EDT	Special Weather Statement	FFC	Sumter	37 min
Jun 26, 4:13 PM EDT	Special Weather Statement	FFC	Banks	32 min
Jun 26, 4:25 PM EDT	Special Weather Statement	FFC	Harris	35 min
Jun 26, 4:32 PM EDT	Special Weather Statement	FFC	Emanuel	28 min
Jun 26, 4:51 PM EDT	Special Weather Statement	FFC	Catoosa, Chattooga, Floyd, Walker, Whitfield	54 min
Jun 26, 4:52 PM EDT	Special Weather Statement	FFC	Crisp	23 min
Jun 26, 5:01 PM EDT	Special Weather Statement	FFC	Harris	29 min
Jun 26, 5:08 PM EDT	Severe Thunderstorm Warning	FFC	Chattooga, Floyd, Gordon	37 min
Jun 26, 5:12 PM EDT	Special Weather Statement	FFC	Crisp	33 min
Jun 26, 5:13 PM EDT	Special Weather Statement	FFC	Wheeler	32 min
Jun 26, 5:33 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Floyd, Gordon, Murray, Polk, Walker and 1 more	42 min
Jun 26, 5:35 PM EDT	Special Weather Statement	FFC	Troup	25 min
Jun 26, 5:38 PM EDT	Special Weather Statement	FFC	Crisp	37 min
Jun 26, 5:39 PM EDT	Special Weather Statement	FFC	Telfair, Wheeler	36 min
Jun 26, 5:51 PM EDT	Special Weather Statement	FFC	Harris	24 min
Jun 26, 5:53 PM EDT	Severe Thunderstorm Warning	FFC	Carroll, Haralson	37 min
Jun 26, 5:56 PM EDT	Severe Thunderstorm Warning	FFC	Harris, Troup	49 min
Jun 26, 6:00 PM EDT	Severe Thunderstorm Warning	FFC	Bartow, Cherokee, Cobb, Paulding, Pickens	45 min
Jun 26, 6:03 PM EDT	Special Weather Statement	FFC	Meriwether, Pike	27 min
Jun 26, 6:06 PM EDT	Severe Thunderstorm Warning	FFC	Fannin, Gilmer, Murray	39 min
Jun 26, 6:09 PM EDT	Special Weather Statement	FFC	Marion	36 min
Jun 26, 6:12 PM EDT	Special Weather Statement	FFC	Fulton	33 min
Jun 26, 6:14 PM EDT	Special Weather Statement	FFC	Hall	31 min
Jun 26, 6:16 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Upson	44 min
Jun 26, 6:20 PM EDT	Severe Thunderstorm Warning	FFC	Coweta, Douglas, Fulton, Heard, Troup	40 min
Jun 26, 6:29 PM EDT	Severe Thunderstorm Warning	FFC	Carroll	31 min
Jun 26, 6:43 PM EDT	Special Weather Statement	FFC	Fannin, Hall, Lumpkin, Towns, Union, White	62 min
Jun 26, 6:44 PM EDT	Special Weather Statement	FFC	Jackson	31 min
Jun 26, 6:49 PM EDT	Special Weather Statement	FFC	Marion	26 min
Jun 26, 6:51 PM EDT	Severe Thunderstorm Warning	FFC	Clayton, Coweta, Fayette, Fulton, Henry, Spalding	39 min
Jun 26, 6:52 PM EDT	Severe Thunderstorm Warning	FFC	Marion	53 min
Jun 26, 6:55 PM EDT	Special Weather Statement	FFC	Crawford	35 min
Jun 26, 6:58 PM EDT	Severe Thunderstorm Warning	FFC	Meriwether, Pike, Upson	32 min
Jun 26, 7:05 PM EDT	Special Weather Statement	FFC	Troup	25 min
Jun 26, 7:09 PM EDT	Special Weather Statement	FFC	Laurens	36 min
Jun 26, 7:10 PM EDT	Severe Thunderstorm Warning	FFC	Barrow, DeKalb, Gwinnett, Rockdale, Walton	35 min
Jun 26, 7:25 PM EDT	Special Weather Statement	FFC	Butts, Clayton, Fayette, Henry, Lamar, Newton and 3 more	50 min
Jun 26, 7:29 PM EDT	Special Weather Statement	FFC	Harris, Muscogee	31 min
Jun 26, 7:31 PM EDT	Severe Thunderstorm Warning	FFC	Butts, Lamar, Monroe, Pike, Spalding	44 min
Jun 26, 7:32 PM EDT	Special Weather Statement	FFC	Crawford, Marion, Taylor	28 min
Jun 26, 7:40 PM EDT	Special Weather Statement	FFC	Banks, Barrow, Clarke, Hall, Jackson, Morgan and 4 more	50 min
Jun 26, 7:44 PM EDT	Special Weather Statement	FFC	Jasper	31 min
Jun 26, 7:50 PM EDT	Severe Thunderstorm Warning	FFC	Bibb	40 min
Jun 26, 7:54 PM EDT	Severe Thunderstorm Warning	FFC	Crawford, Taylor	30 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.