Alert archive / Georgia / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 148, NWS Atlanta, GA

April 11, 20118 counties in Georgia

NWS Atlanta, GA issued this severe thunderstorm warning at Apr 11, 2011, 10:11 PM EDT for 8 counties in Georgia. It was in force for 34 min. 2 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
Apr 11, 2011, 10:11 PM EDT (02:11 UTC)
Expired
Apr 11, 2011, 10:45 PM EDT
In force
34 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Bartow County, GA, Cherokee County, GA, Fannin County, GA, Gilmer County, GA, Gordon County, GA, Murray County, GA, Pickens County, GA, Polk County, GA

The radar

The Northeast Alabama radar (KHTX), 118 km from the middle of the area, began a volume at 02:11 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
Apr 11, 10:11 PM EDTTSTM WND DMGAdairsville, GABARTOW COUNTY 911 RELAYED A REPORT OF THREE TREES DOWN IN THE ADAIRSVILLE AREA.
Apr 11, 10:36 PM EDTTSTM WND DMGEllijay, GAGILMER COUNTY EMA RELAYED A REPORT OF FIVE TREES DOWN AND EXPECTS MORE TO BE REPORTED.

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.

IssuedProductOfficeLasted
Apr 11, 8:08 PM EDTTornado WatchSPC7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.2 hours before the alert went out and 136 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 2011-04-12Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 9 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 2011-04-12The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 155 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
9 J/kg
Mixed-layer CIN
-501 J/kg
Mixed-layer LCL
1916 m above ground
0-6 km bulk shear
53 kt
0-1 km storm-relative helicity
155 m²/s²
0-3 km storm-relative helicity
355 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.

665 
WUUS52 KFFC 120211
SVRFFC
GAC015-057-111-123-129-213-227-233-120245-
/O.NEW.KFFC.SV.W.0148.110412T0211Z-110412T0245Z/

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1011 PM EDT MON APR 11 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  NORTHWESTERN FANNIN COUNTY IN NORTH CENTRAL GEORGIA
  GILMER COUNTY IN NORTH CENTRAL GEORGIA
  WESTERN PICKENS COUNTY IN NORTH CENTRAL GEORGIA
  BARTOW COUNTY IN NORTHWEST GEORGIA
  GORDON COUNTY IN NORTHWEST GEORGIA
  MURRAY COUNTY IN NORTHWEST GEORGIA
  NORTHEASTERN POLK COUNTY IN NORTHWEST GEORGIA

* UNTIL 1045 PM EDT

* AT 1006 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
  11 MILES NORTHEAST OF ETON TO 7 MILES EAST OF RESACA TO 10 MILES
  WEST OF KINGSTON...MOVING NORTHEAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  EUHARLEE...CASSVILLE...CARTERSVILLE...EMERSON...WHITE...ELLIJAY...
  EAST ELLIJAY...BLUE RIDGE...WALESKA AND TALKING ROCK.

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 300 AM EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3499 8421 3408 8460 3409 8487 3398 8520
      3410 8518 3410 8505 3439 8501 3441 8509
      3445 8508 3461 8502 3461 8493 3468 8494
      3467 8489 3471 8494 3471 8486 3478 8488
      3487 8482 3492 8484 3500 8481
TIME...MOT...LOC 0211Z 241DEG 54KT 3501 8460 3461 8474
          3424 8504

$$
1 follow-up statement
467 
WWUS52 KFFC 120233
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
1033 PM EDT MON APR 11 2011

GAC015-057-111-123-129-213-227-233-120245-
/O.CON.KFFC.SV.W.0148.000000T0000Z-110412T0245Z/
POLK GA-PICKENS GA-MURRAY GA-BARTOW GA-CHEROKEE GA-FANNIN GA-
GILMER GA-GORDON GA-
1033 PM EDT MON APR 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1045 PM EDT
FOR EASTERN GORDON...GILMER...NORTHWESTERN FANNIN...WESTERN
CHEROKEE...BARTOW...SOUTHEASTERN MURRAY...WESTERN PICKENS AND
NORTHEASTERN POLK COUNTIES...

AT 1030 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 EXTENDING
FROM HIGDON TO MOUNTAINTOWN TO FUNKHOUSER...MOVING NORTHEAST AT 60
MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
ELLIJAY...EAST ELLIJAY...WALESKA...SALACOA VALLEY...HINTON...
TALONA...BLAINE...CHERRY LOG...BLUE RIDGE...TALMADGE...MINERAL
BLUFF...TALKING ROCK AND CARTECAY.

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 300 AM EDT TUESDAY MORNING
FOR NORTHERN GEORGIA.

&&

LAT...LON 3499 8421 3408 8460 3409 8487 3398 8520
      3410 8518 3408 8515 3410 8505 3419 8504
      3500 8461
TIME...MOT...LOC 0233Z 241DEG 54KT 3492 8437 3478 8446
          3440 8469

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 11, 8:38 PM EDTSevere Thunderstorm WarningFFCCatoosa, Chattooga, Dade, Walker52 min
Apr 11, 9:21 PM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Gordon, Murray, Polk and 2 more54 min
Apr 11, 10:01 PM EDTSevere Thunderstorm WarningFFCCarroll, Cobb, Douglas, Haralson, Paulding, Polk44 min
Apr 11, 10:40 PM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Dawson, Fannin, Gilmer, Lumpkin and 2 more65 min
Apr 11, 10:44 PM EDTSevere Thunderstorm WarningFFCBartow, Carroll, Cherokee, Cobb, Coweta, Douglas and 4 more48 min
Apr 11, 11:42 PM EDTSevere Thunderstorm WarningFFCChattahoochee, Harris, Meriwether, Muscogee, Talbot, Troup48 min
Apr 12, 4:28 AM EDTWind AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Butts and 73 more16 hr

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.