Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 364, NWS Atlanta, GA

June 22, 20117 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Jun 22, 2011, 5:37 PM EDT for 7 counties in Georgia. It was in force for 38 min. 4 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 22, 2011, 5:37 PM EDT (21:37 UTC)
Expired
Jun 22, 2011, 6:15 PM EDT
In force
38 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Banks County, GA, Clarke County, GA, Hall County, GA, Jackson County, GA, Madison County, GA, Oconee County, GA, Oglethorpe County, GA

The radar

The Greer radar (KGSP), 127 km from the middle of the area, began a volume at 21:38 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

TimeReportWhereRemark
Jun 22, 5:40 PM EDTTSTM WND DMG4 Sw Athens, GAOCONEE COUNTY 911 RELAYED REPORTS OF SEVERAL DOWNED LINES NEAR THE MALCOLM BRIDGE AND LENRU ROADS AREA.
Jun 22, 5:45 PM EDTTSTM WND DMGAthens, GAATHENS-CLARKE COUNTY 911 REPORTS 2 DOWNED TREES.
Jun 22, 5:53 PM EDTTSTM WND DMG2 W Commerce, GAJACKSON COUNTY 911 RELAYED A REPORT OF 2 TREES DOWNED ONTO POWERLINES ON THE NORTHERN END OF THE COUNTY.
Jun 22, 5:53 PM EDTTSTM WND DMGColbert, GAMADISON COUNTY 911 RELAYED REPORTS OF A DOWNED TREE AND POWERLINE IN COLBERT.

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

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.6 hours before the alert went out and 144 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2011-06-22Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 43 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2011-06-22The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 95 square meters per square second.193958Sfc1 km3 km6 km9 kmRMLM
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
43 J/kg
Mixed-layer CIN
-116 J/kg
Mixed-layer LCL
1250 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
95 m²/s²
0-3 km storm-relative helicity
105 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

421 
WUUS52 KFFC 222137
SVRFFC
GAC011-059-139-157-195-219-221-222215-
/O.NEW.KFFC.SV.W.0364.110622T2137Z-110622T2215Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
537 PM EDT WED JUN 22 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN HALL COUNTY IN NORTH CENTRAL GEORGIA
  BANKS COUNTY IN NORTHEAST GEORGIA
  CLARKE COUNTY IN NORTHEAST GEORGIA
  JACKSON COUNTY IN NORTHEAST GEORGIA
  MADISON COUNTY IN NORTHEAST GEORGIA
  NORTH CENTRAL OCONEE COUNTY IN NORTHEAST GEORGIA
  NORTHWESTERN OGLETHORPE COUNTY IN NORTHEAST GEORGIA

* UNTIL 615 PM EDT

* AT 535 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS UP
  TO 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  LULA TO NICHOLSON TO ATHENS...MOVING NORTHEAST AT 50 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  WHITEHALL...HOMER...WINTERVILLE...HULL...ILA...COLBERT...
  DANIELSVILLE...COMER AND CARLTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...FREQUENT CLOUD TO
GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS
IMMEDIATELY! REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE
ENOUGH TO BE STRUCK BY LIGHTNING.

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 3444 8362 3450 8353 3447 8340 3443 8337
      3433 8339 3426 8333 3427 8330 3425 8325
      3425 8316 3427 8311 3423 8307 3417 8309
      3405 8296 3382 8347 3403 8356 3404 8360
      3438 8382 3451 8366
TIME...MOT...LOC 2136Z 224DEG 45KT 3442 8364 3411 8340
          3394 8341

$$
2 follow-up statements
504 
WWUS52 KFFC 222205
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
605 PM EDT WED JUN 22 2011

GAC011-059-139-157-219-222212-
/O.CAN.KFFC.SV.W.0364.000000T0000Z-110622T2215Z/
OCONEE GA-BANKS GA-CLARKE GA-HALL GA-JACKSON GA-
605 PM EDT WED JUN 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR JACKSON...NORTHEASTERN HALL...
CLARKE...BANKS AND NORTH CENTRAL OCONEE COUNTIES IS CANCELLED...

THE STORMS THAT PROMPTED THE WARNING HAVE MOVED OUT OF THE AREA. 
RAIN AND OCCASIONAL CLOUD TO GROUND LIGHTNING WILL PERSIST FOR ANOTHER
HOUR...SO OUTDOOR ACTIVITIES ARE DISCOURAGED.

IF YOU SAW WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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 3425 8325 3425 8316 3427 8311 3423 8307
      3417 8309 3405 8298 3404 8298 3392 8326
      3395 8328 3400 8326 3403 8334 3410 8337
      3416 8336 3420 8340 3427 8330
TIME...MOT...LOC 2202Z 250DEG 33KT 3426 8320 3397 8318

$$

GAC195-221-222215-
/O.CON.KFFC.SV.W.0364.000000T0000Z-110622T2215Z/
OGLETHORPE GA-MADISON GA-
605 PM EDT WED JUN 22 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 615 PM EDT
FOR MADISON AND NORTHWESTERN OGLETHORPE COUNTIES...

AT 558 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING
WINDS UP TO 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE FRON 
NORTH OF DANIELSVILLE TO WINTERVILLE...MOVING EAST AT 40 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
COMER...HARRISON...PAOLI...WATSON MILL BRIDGE STATE PARK AND CARLTON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU SEE WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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 3425 8325 3425 8316 3427 8311 3423 8307
      3417 8309 3405 8298 3404 8298 3392 8326
      3395 8328 3400 8326 3403 8334 3410 8337
      3416 8336 3420 8340 3427 8330
TIME...MOT...LOC 2202Z 250DEG 33KT 3426 8320 3397 8318

$$
499 
WWUS52 KFFC 222215
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
615 PM EDT WED JUN 22 2011

GAC195-221-222224-
/O.EXP.KFFC.SV.W.0364.000000T0000Z-110622T2215Z/
OGLETHORPE GA-MADISON GA-
615 PM EDT WED JUN 22 2011

...THE SEVERE THUNDERSTORM WARNING FOR MADISON AND NORTHWESTERN 
OGLETHORPE COUNTIES WILL BE ALLOWED TO EXPIRE AT 615 PM EDT...

THE STRONGEST PORTION OF THE STORM THAT PROMPTED THE WARNING HAS 
MOVED OUT OF THE AREA. HOWEVER...HEAVY RAIN...WIND GUSTS TO 30 MPH 
WILL CONTINUE THROUGH 630 PM EDT. OCCAIONAL LIGHTNING WILL ALSO 
PERSIST FOR ANOTHER HOUR SO OUTDOOR ACTIVITIES ARE DISCOURAGED.

IF YOU SAW WIND DAMAGE...LARGE HAIL OR SIGNIFICANT FLOODING...WAIT
UNTIL AFTER 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 3425 8325 3425 8316 3427 8311 3423 8307
      3417 8309 3405 8298 3404 8298 3392 8326
      3395 8328 3400 8326 3403 8334 3410 8337
      3416 8336 3420 8340 3427 8330
TIME...MOT...LOC 2214Z 250DEG 33KT 3430 8307 3401 8305

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 21, 8:07 PM EDTSpecial Weather StatementFFCTaliaferro38 min
Jun 21, 8:17 PM EDTSpecial Weather StatementFFCBleckley, Pulaski43 min
Jun 21, 8:21 PM EDTSpecial Weather StatementFFCHancock39 min
Jun 21, 8:56 PM EDTSpecial Weather StatementFFCLaurens49 min
Jun 21, 9:05 PM EDTSpecial Weather StatementFFCWilkinson40 min
Jun 21, 9:34 PM EDTSpecial Weather StatementFFCWashington41 min
Jun 21, 10:53 PM EDTSpecial Weather StatementFFCJefferson37 min
Jun 21, 11:54 PM EDTSpecial Weather StatementFFCHouston51 min
Jun 22, 2:49 PM EDTSpecial Weather StatementFFCCoweta, Heard, Meriwether, Troup41 min
Jun 22, 2:56 PM EDTSpecial Weather StatementFFCCarroll, Douglas, Haralson, Paulding34 min
Jun 22, 3:27 PM EDTSpecial Weather StatementFFCCarroll, Chattahoochee, Coweta, Douglas, Fayette, Harris and 5 more33 min
Jun 22, 3:51 PM EDTSpecial Weather StatementFFCClayton, Cobb, DeKalb, Douglas, Fayette, Fulton and 4 more39 min
Jun 22, 4:13 PM EDTSevere Thunderstorm WarningFFCClayton, DeKalb, Forsyth, Fulton, Gwinnett, Henry and 4 more62 min
Jun 22, 4:30 PM EDTSpecial Weather StatementFFCCherokee, Dawson45 min
Jun 22, 4:41 PM EDTSpecial Weather StatementFFCFannin34 min
Jun 22, 4:44 PM EDTSpecial Weather StatementFFCLamar, Monroe, Upson46 min
Jun 22, 4:51 PM EDTSevere Thunderstorm WarningFFCBanks, Barrow, Clarke, Gwinnett, Hall, Jackson and 3 more54 min
Jun 22, 5:11 PM EDTSpecial Weather StatementFFCLumpkin, Union49 min
Jun 22, 5:22 PM EDTSpecial Weather StatementFFCBaldwin, Bibb, Houston, Jasper, Jones, Peach and 2 more38 min
Jun 22, 6:18 PM EDTSpecial Weather StatementFFCDade27 min
Jun 22, 6:20 PM EDTSpecial Weather StatementFFCMadison, Oglethorpe40 min
Jun 22, 6:36 PM EDTSpecial Weather StatementFFCCarroll, Haralson, Heard39 min
Jun 22, 6:58 PM EDTSevere Thunderstorm WarningFFCCarroll, Haralson, Heard47 min
Jun 22, 7:11 PM EDTSpecial Weather StatementFFCHaralson, Polk64 min
Jun 22, 7:21 PM EDTSevere Thunderstorm WarningFFCFloyd, Haralson, Polk43 min
Jun 22, 7:48 PM EDTSpecial Weather StatementFFCCobb, Douglas42 min
Jun 22, 7:56 PM EDTSpecial Weather StatementFFCBartow, Gordon, Pickens49 min

Nearby

Severe Thunderstorm Warnings in Georgia, 2011Every 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.