Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 78, NWS Atlanta, GA

March 26, 20114 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Mar 26, 2011, 11:56 PM EDT for 4 counties in Georgia. It was in force for 34 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, 11:56 PM EDT (03:56 UTC)
Expired
Mar 27, 2011, 12:30 AM EDT
In force
34 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Carroll County, GA, Coweta County, GA, Douglas County, GA, Fulton County, GA

The radar

The Atlanta radar (KFFC), 24 km from the middle of the area, began a volume at 03:59 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 watch it was issued in

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

IssuedProductOfficeLasted
Mar 26, 8:47 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 3.9 hours before the alert went out and 29 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°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.

640 
WUUS52 KFFC 270356
SVRFFC
GAC045-077-097-121-270430-
/O.NEW.KFFC.SV.W.0078.110327T0356Z-110327T0430Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1156 PM EDT SAT MAR 26 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHERN DOUGLAS COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHWESTERN FULTON COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHEASTERN CARROLL COUNTY IN NORTHWEST GEORGIA
  NORTHERN COWETA COUNTY IN WEST CENTRAL GEORGIA

* UNTIL 1230 AM EDT

* AT 1154 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 NEAR
  WHITESBURG...MOVING EAST AT 40 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CHATTAHOOCHEE HILL COUNTRY...PALMETTO AND FAIRBURN.

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 TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT SUNDAY MORNING FOR
GEORGIA.

A SEVERE THUNDERSTORM WATCH ALSO REMAINS IN EFFECT UNTIL 500 AM EDT
SUNDAY MORNING FOR NORTHERN GEORGIA.

&&

LAT...LON 3347 8510 3368 8488 3365 8453 3352 8458
      3351 8461 3343 8462 3337 8465
TIME...MOT...LOC 0357Z 280DEG 37KT 3355 8493

$$
1 follow-up statement
069 
WWUS52 KFFC 270419
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1219 AM EDT SUN MAR 27 2011

GAC045-097-270427-
/O.CAN.KFFC.SV.W.0078.000000T0000Z-110327T0430Z/
CARROLL GA-DOUGLAS GA-
1219 AM EDT SUN MAR 27 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHERN DOUGLAS AND
SOUTHEASTERN CARROLL COUNTIES IS CANCELLED...

THE STORM THAT PROMPTED THE WARNING HAS EXITED CARROLL AND DOUGLAS 
COUNTIES.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT SUNDAY MORNING FOR
GEORGIA.

LAT...LON 3344 8492 3351 8485 3352 8481 3355 8483
      3363 8475 3363 8474 3365 8471 3366 8465
      3365 8453 3352 8458 3351 8461 3337 8465
      3343 8494 3345 8495
TIME...MOT...LOC 0417Z 280DEG 37KT 3352 8471

$$

GAC077-121-270430-
/O.CON.KFFC.SV.W.0078.000000T0000Z-110327T0430Z/
COWETA GA-FULTON GA-
1219 AM EDT SUN MAR 27 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1230 AM EDT
FOR SOUTHWESTERN FULTON AND NORTHERN COWETA COUNTIES...

AT 1213 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZED
HAIL...AND DAMAGING WINDS UP TO 60 MPH. THIS STORM WAS LOCATED NEAR
CHATTAHOOCHEE HILL COUNTRY...MOVING EAST AT 45 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
CAMPBELLTON...PALMETTO...THOMAS CROSSROADS...CANNONGATE AND FAIRBURN.

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.

A TORNADO WATCH REMAINS IN EFFECT UNTIL 400 AM EDT SUNDAY MORNING FOR
GEORGIA.

&&

LAT...LON 3344 8492 3351 8485 3352 8481 3355 8483
      3363 8475 3363 8474 3365 8471 3366 8465
      3365 8453 3352 8458 3351 8461 3337 8465
      3343 8494 3345 8495
TIME...MOT...LOC 0417Z 280DEG 37KT 3352 8471

$$

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, 9:14 PM EDTSevere Thunderstorm WarningFFCDawson, Fannin, Lumpkin, Union46 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 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.