Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 67, NWS Atlanta, GA

March 26, 20114 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 26, 2011, 9:14 PM EDT for 4 counties in Georgia. It was in force for 46 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
Mar 26, 2011, 9:14 PM EDT (01:14 UTC)
Expired
Mar 26, 2011, 10:00 PM EDT
In force
46 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Dawson County, GA, Fannin County, GA, Lumpkin County, GA, Union County, GA

The radar

The Atlanta radar (KFFC), 145 km from the middle of the area, began a volume at 01:16 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 00:00Z, 1.2 hours before the alert went out and 142 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 00:00Z on 2011-03-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 120 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 00:00Z on 2011-03-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 343 square meters per square second.19395878Sfc1 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
120 J/kg
Mixed-layer CIN
-166 J/kg
Mixed-layer LCL
635 m above ground
0-6 km bulk shear
67 kt
0-1 km storm-relative helicity
343 m²/s²
0-3 km storm-relative helicity
404 m²/s²
Significant tornado parameter
0.0
Supercell composite
6.7

Open this sounding in Storm Lab

The text

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

202 
WUUS52 KFFC 270114
SVRFFC
GAC085-111-187-291-270200-
/O.NEW.KFFC.SV.W.0067.110327T0114Z-110327T0200Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
914 PM EDT SAT MAR 26 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN DAWSON COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN FANNIN COUNTY IN NORTH CENTRAL GEORGIA
  LUMPKIN COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHERN UNION COUNTY IN NORTH CENTRAL GEORGIA

* UNTIL 1000 PM EDT

* AT 909 PM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZED HAIL...AND
  DESTRUCTIVE WINDS UP TO 70 MPH.  THIS STORM WAS LOCATED 24 MILES
  WEST OF SUCHES...MOVING EAST AT 50 MPH.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS AND LARGE
DAMAGING HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY
AWAY FROM WINDOWS!

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 3474 8383 3472 8386 3463 8388 3455 8387
      3453 8383 3450 8385 3446 8389 3447 8392
      3445 8392 3442 8397 3454 8434 3458 8433
      3457 8426 3459 8425 3463 8419 3467 8425
      3478 8428
TIME...MOT...LOC 0114Z 284DEG 47KT 3467 8438

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Mar 26, 8:00 PM EDTTornado WarningFFCBibb, Crawford, Houston, Peach, Twiggs, Wilkinson45 min
Mar 26, 8:14 PM EDTSevere Thunderstorm WarningFFCMarion, Schley, Stewart, Sumter, Webster46 min
Mar 26, 8:23 PM EDTSevere Thunderstorm WarningFFCFloyd, Polk43 min
Mar 26, 8:25 PM EDTSevere Thunderstorm WarningFFCChattooga, Dade, Walker50 min
Mar 26, 8:25 PM EDTTornado WarningFFCStewart, Sumter, Webster50 min
Mar 26, 8:39 PM EDTSevere Thunderstorm WarningFFCGilmer, Murray51 min
Mar 26, 8:53 PM EDTSevere Thunderstorm WarningFFCBartow, Floyd, Gordon52 min
Mar 26, 9:20 PM EDTSevere Thunderstorm WarningFFCJohnson, Laurens, Wilkinson40 min
Mar 26, 9:28 PM EDTSevere Thunderstorm WarningFFCCherokee, Gilmer, Pickens47 min
Mar 26, 9:37 PM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd38 min
Mar 26, 9:44 PM EDTSevere Thunderstorm WarningFFCHall, White46 min
Mar 26, 9:44 PM EDTTornado WarningFFCEmanuel, Johnson, Laurens46 min
Mar 26, 10:08 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Paulding, Polk52 min
Mar 26, 10:09 PM EDTSevere Thunderstorm WarningFFCClayton, Fayette, Fulton, Henry25 min
Mar 26, 10:22 PM EDTSevere Thunderstorm WarningFFCForsyth, Hall, Jackson38 min
Mar 26, 10:30 PM EDTSevere Thunderstorm WarningFFCCobb, DeKalb, Fulton, Gwinnett60 min
Mar 26, 10:41 PM EDTSevere Thunderstorm WarningFFCHaralson, Polk49 min
Mar 26, 11:13 PM EDTSevere Thunderstorm WarningFFCBarrow, DeKalb, Henry, Newton, Oconee, Rockdale and 1 more47 min
Mar 26, 11:56 PM EDTSevere Thunderstorm WarningFFCCarroll, Coweta, Douglas, Fulton34 min
Mar 27, 1:38 AM EDTSevere Thunderstorm WarningFFCHeard, Troup52 min
Mar 27, 2:15 AM EDTRiver Flood WarningFFCForsyth, Fulton29 hr
Mar 27, 3:00 AM EDTTornado WarningFFCMeriwether, Talbot, Troup, Upson45 min
Mar 27, 3:55 AM EDTSevere Thunderstorm WarningFFCBibb, Crawford, Lamar, Monroe, Peach, Upson50 min
Mar 27, 6:08 AM EDTSevere Thunderstorm WarningFFCHall, Jackson37 min
Mar 27, 6:22 AM EDTSevere Thunderstorm WarningFFCGreene, Hancock, Taliaferro, Warren38 min
Mar 27, 7:33 AM EDTSevere Thunderstorm WarningFFCCoweta, Fayette, Meriwether, Pike, Spalding27 min
Mar 27, 7:38 AM EDTRiver Flood WarningFFCWhitfield46 hr
Mar 27, 10:30 AM EDTSevere Thunderstorm WarningFFCMeriwether, Talbot, Upson30 min
Mar 27, 10:33 AM EDTSevere Thunderstorm WarningFFCBibb, Crawford, Monroe42 min
Mar 27, 10:57 AM EDTSevere Thunderstorm WarningFFCBibb, Crawford, Monroe, Upson48 min
Mar 27, 12:48 PM EDTSevere Thunderstorm WarningFFCJohnson, Laurens42 min
Mar 27, 1:14 PM EDTSevere Thunderstorm WarningFFCEmanuel, Treutlen46 min
Mar 27, 1:38 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Stewart37 min
Mar 27, 2:01 PM EDTSevere Thunderstorm WarningFFCEmanuel, Laurens, Montgomery, Toombs, Treutlen, Wheeler44 min
Mar 27, 2:22 PM EDTSevere Thunderstorm WarningFFCMarion, Schley, Sumter, Webster53 min
Mar 27, 2:32 PM EDTSevere Thunderstorm WarningFFCDooly, Pulaski43 min
Mar 27, 2:52 PM EDTSevere Thunderstorm WarningFFCBleckley, Dodge53 min
Mar 27, 3:01 PM EDTSevere Thunderstorm WarningFFCLaurens, Montgomery, Treutlen, Wheeler59 min
Mar 27, 3:11 PM EDTSevere Thunderstorm WarningFFCCrisp, Dooly49 min
Mar 27, 3:34 PM EDTSevere Thunderstorm WarningFFCDodge, Wilcox56 min
Mar 27, 3:51 PM EDTSevere Thunderstorm WarningFFCDodge, Montgomery, Telfair, Toombs, Wheeler54 min
Mar 27, 4:26 PM EDTSevere Thunderstorm WarningFFCDodge, Telfair, Wilcox25 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.