Alert archive / Georgia / Tornado Warnings in 2011

Tornado Warning 1, NWS Atlanta, GA

February 28, 20114 counties in Georgia

NWS Atlanta, GA issued this tornado warning at Feb 28, 2011, 4:32 PM EST for 4 counties in Georgia. It was in force for 28 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
Feb 28, 2011, 4:32 PM EST (21:32 UTC)
Expired
Feb 28, 2011, 5:00 PM EST
In force
28 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Bartow County, GA, Cherokee County, GA, Cobb County, GA, Paulding County, GA

The radar

The Atlanta radar (KFFC), 84 km from the middle of the area, began a volume at 21:35 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
Feb 28, 4:35 PM ESTTSTM WND DMGCartersville, GABARTOW COUNTY EMA RELAYED A REPORT OF MANY TREES DOWN IN THE CARTERSVILLE AREA.
Feb 28, 4:48 PM ESTTSTM WND DMGWoodstock, GACHEROKEE COUNTY EMERGENCY MANAGEMENT REPORTS POWER OUTAGES IN MOST OF WOODSTOCK.
Feb 28, 4:50 PM ESTHAIL 1.253 Ne Acworth, GAPUBLIC REPORTED QUARTER TO HALF DOLLAR SIZED HAIL.
Feb 28, 4:51 PM ESTHAIL 0.75Woodstock, GACHEROKEE COUNTY EMERGENCY MANAGEMENT RELAYED REPORT OF DIME SIZED HAIL AT HOBGOOD PARK IN WOODSTOCK.
Feb 28, 4:54 PM ESTTSTM WND DMGWoodstock, GACHEROKEE COUNTY EMERGENCY MANAGEMENT RELAYED REPORTS ON 6 DOWNED TREES AND POWER LINES IN WOODSTOCK.

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
Feb 28, 1:29 PM ESTTornado WatchSPC7 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.5 hours before the alert went out and 84 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 2011-02-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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 12:00Z on 2011-02-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 229 square meters per square second.1939587897117Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1162 m above ground
0-6 km bulk shear
50 kt
0-1 km storm-relative helicity
229 m²/s²
0-3 km storm-relative helicity
350 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.

283 
WFUS52 KFFC 282132
TORFFC
GAC015-057-067-223-282200-
/O.NEW.KFFC.TO.W.0001.110228T2132Z-110228T2200Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
432 PM EST MON FEB 28 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN CHEROKEE COUNTY IN NORTH CENTRAL GEORGIA
  NORTHERN COBB COUNTY IN NORTH CENTRAL GEORGIA
  SOUTHERN BARTOW COUNTY IN NORTHWEST GEORGIA
  NORTHEASTERN PAULDING COUNTY IN NORTHWEST GEORGIA

* UNTIL 500 PM EST

* AT 430 PM EST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO NEAR
  CARTERSVILLE...MOVING EAST AT 60 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  EMERSON...ACWORTH...WOODSTOCK AND HOLLY SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

WHEN A TORNADO WARNING IS ISSUED BASED ON DOPPLER RADAR...IT MEANS
THAT STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY
ALREADY BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY. IF YOU
ARE IN THE PATH OF THIS DANGEROUS STORM...MOVE INDOORS AND TO A
BASEMENT OR INTERIOR ROOM ON THE GROUND FLOOR. STAY AWAY FROM
WINDOWS. IF DRIVING...DO NOT SEEK SHELTER UNDER A HIGHWAY OVERPASS.

DO NOT USE YOUR CAR TO TRY TO OUTRUN A TORNADO. CARS ARE EASILY
TOSSED AROUND BY TORNADO WINDS. IF YOU ARE CAUGHT IN THE PATH OF A
TORNADO...LEAVE THE CAR AND GO TO A STRONG BUILDING. IF NO SAFE
STRUCTURE IS NEARBY...SEEK SHELTER IN A DITCH OR LOW SPOT AND COVER
YOUR HEAD.

THE SAFEST PLACE TO BE DURING A TORNADO IS IN A BASEMENT. GET UNDER A
WORKBENCH OR OTHER PIECE OF STURDY FURNITURE. IF NO BASEMENT IS
AVAILABLE...SEEK SHELTER ON THE GROUND FLOOR OF THE BUILDING IN AN
INTERIOR HALLWAY OR SMALL ROOM SUCH AS A CLOSET. USE BLANKETS OR
PILLOWS TO COVER YOUR BODY AND ALWAYS STAY AWAY FROM WINDOWS.

IF YOU ARE IN A MOBILE HOME OR VEHICLE...LEAVE THEM AND GET INSIDE A
SUBSTANTIAL SHELTER. IF NO SHELTER IS AVAILABLE...LIE FLAT IN THE
NEAREST DITCH OR OTHER LOW SPOT AND COVER YOUR HEAD WITH YOUR HANDS.

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 800 PM EST MONDAY EVENING FOR
NORTHERN GEORGIA.

&&

LAT...LON 3419 8494 3421 8434 3417 8434 3417 8436
      3413 8436 3410 8442 3404 8443 3403 8462
      3404 8494 3408 8493 3409 8495
TIME...MOT...LOC 2133Z 272DEG 50KT 3414 8481

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 28, 4:04 AM ESTWind AdvisoryFFCBaldwin, Banks, Barrow, Bartow, Bibb, Bleckley and 90 more15 hr
Feb 28, 2:25 PM ESTSevere Thunderstorm WarningFFCCatoosa, Dade, Walker50 min
Feb 28, 2:45 PM ESTSevere Thunderstorm WarningFFCMurray, Whitfield45 min
Feb 28, 3:08 PM ESTSevere Thunderstorm WarningFFCChattooga, Dade, Floyd, Walker37 min
Feb 28, 3:13 PM ESTSevere Thunderstorm WarningFFCFannin, Gilmer32 min
Feb 28, 3:29 PM ESTSevere Thunderstorm WarningFFCTowns, Union31 min
Feb 28, 3:42 PM ESTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Gordon48 min
Feb 28, 3:50 PM ESTSevere Thunderstorm WarningFFCBartow, Floyd, Polk25 min
Feb 28, 4:09 PM ESTSevere Thunderstorm WarningFFCBartow, Cherokee, Pickens51 min
Feb 28, 4:17 PM ESTSevere Thunderstorm WarningFFCBartow, Floyd13 min
Feb 28, 4:40 PM ESTSevere Thunderstorm WarningFFCDawson, Forsyth, Hall50 min
Feb 28, 4:56 PM ESTTornado WarningFFCCherokee, Cobb, Forsyth, Fulton35 min
Feb 28, 5:04 PM ESTSevere Thunderstorm WarningFFCCarroll, Haralson, Paulding, Polk41 min
Feb 28, 5:16 PM ESTSevere Thunderstorm WarningFFCBanks, Barrow, Clarke, Gwinnett, Hall, Jackson and 3 more44 min
Feb 28, 5:49 PM ESTSevere Thunderstorm WarningFFCCarroll, Cobb, Douglas, Fulton, Paulding41 min
Feb 28, 5:55 PM ESTTornado WarningFFCDouglas, Fulton35 min
Feb 28, 6:12 PM ESTSevere Thunderstorm WarningFFCClayton, DeKalb, Henry, Newton, Rockdale33 min
Feb 28, 6:36 PM ESTSevere Thunderstorm WarningFFCMeriwether, Troup39 min

Nearby

Tornado Warnings in Georgia, 2011Every tornado warning in 2011Tornadoes 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.