Alert archive / Georgia / Tornado Warnings in 2011

Tornado Warning 26, NWS Atlanta, GA

April 27, 20115 counties in Georgia

NWS Atlanta, GA issued this tornado warning at Apr 27, 2011, 8:16 AM EDT for 5 counties in Georgia. It was in force for 44 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 27, 2011, 8:16 AM EDT (12:16 UTC)
Expired
Apr 27, 2011, 9:00 AM EDT
In force
44 min
Issued by
NWS Atlanta, GA
Area
Storm-based polygon

Counties Catoosa County, GA, Chattooga County, GA, Dade County, GA, Walker County, GA, Whitfield County, GA

The radar

The Northeast Alabama radar (KHTX), 78 km from the middle of the area, began a volume at 12:17 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 27, 8:41 AM EDTTSTM WND DMGSuttles Mill, GAWALKER COUNTY 911 RELAYED A REPORT OF SEVERAL TREES DOWN IN SHUTTLES MILL.
Apr 27, 8:59 AM EDTTSTM WND DMG2 Nw Dalton, GAWHITFIELD COUNTY EMA RELAYED A REPORT OF SEVERAL TREES DOWN NW OF DALTON.

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 27, 7:48 AM EDTTornado WatchSPC2 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.3 hours before the alert went out and 167 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 2011-04-27Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 748 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 12:00Z on 2011-04-27The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 345 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
748 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
501 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
345 m²/s²
0-3 km storm-relative helicity
460 m²/s²
Significant tornado parameter
1.5
Supercell composite
5.4

Open this sounding in Storm Lab

The text

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

283 
WFUS52 KFFC 271216
TORFFC
GAC047-055-083-295-313-271300-
/O.NEW.KFFC.TO.W.0026.110427T1216Z-110427T1300Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
816 AM EDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN PEACHTREE CITY HAS ISSUED A

* TORNADO WARNING FOR...
  CATOOSA COUNTY IN NORTHWEST GEORGIA
  NORTHWESTERN CHATTOOGA COUNTY IN NORTHWEST GEORGIA
  SOUTHERN DADE COUNTY IN NORTHWEST GEORGIA
  WALKER COUNTY IN NORTHWEST GEORGIA
  WEST CENTRAL WHITFIELD COUNTY IN NORTHWEST GEORGIA

* UNTIL 900 AM EDT

* AT 813 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO 12 MILES WEST OF
  CLOUDLAND...MOVING NORTHEAST AT 55 MPH.

* OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO
  CHICKAMAUGA...LAFAYETTE AND FORT OGLETHORPE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE THEM AND GET INSIDE
A STURDY 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 NOON EDT WEDNESDAY FOR
NORTHERN GEORGIA.

&&

LAT...LON 3472 8493 3447 8550 3448 8551 3473 8556
      3499 8524 3499 8519
TIME...MOT...LOC 1216Z 234DEG 48KT 3454 8562

$$
1 follow-up statement
587 
WWUS52 KFFC 271239
SVSFFC

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE PEACHTREE CITY GA
839 AM EDT WED APR 27 2011

GAC047-055-083-295-313-271300-
/O.CON.KFFC.TO.W.0026.000000T0000Z-110427T1300Z/
WHITFIELD GA-WALKER GA-CATOOSA GA-CHATTOOGA GA-DADE GA-
839 AM EDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 900 AM EDT FOR CENTRAL
DADE...NORTH CENTRAL CHATTOOGA...CATOOSA...WALKER AND WEST CENTRAL
WHITFIELD COUNTIES...

AT 836 AM EDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO
INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES WEST OF 
LAFAYETTE...MOVING NORTHEAST AT 60 MPH.

OTHER LOCATIONS IN THE WARNING INCLUDE BUT ARE NOT LIMITED TO COOPER
HEIGHTS...LAFAYETTE...LINWOOD...SUTTLES MILL...NAOMI...NOBLE...
VILLANOW...CHICKAMAUGA...ROCK SPRING...BLUE SPRING...BEAUMONT...
FAIRVIEW...WOOD STATION...FORT OGLETHORPE...MILL CREEK...BOYNTON...
ROCKY FACE AND INDIAN SPRINGS.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

IF YOU ARE IN A MOBILE HOME OR VEHICLE...EVACUATE THEM AND GET INSIDE
A STURDY 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 NOON EDT WEDNESDAY FOR
NORTHERN GEORGIA.

&&

LAT...LON 3472 8493 3455 8536 3476 8551 3499 8524
      3499 8519
TIME...MOT...LOC 1238Z 232DEG 46KT 3471 8537

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 27, 8:04 AM EDTSevere Thunderstorm WarningFFCBartow, Chattooga, Floyd, Haralson, Polk56 min
Apr 27, 8:25 AM EDTTornado WarningFFCDade, Walker35 min
Apr 27, 8:28 AM EDTSevere Thunderstorm WarningFFCCarroll, Haralson, Heard32 min
Apr 27, 8:35 AM EDTSevere Thunderstorm WarningFFCBartow, Cherokee, Cobb, Gilmer, Gordon, Murray and 5 more55 min
Apr 27, 8:42 AM EDTSevere Thunderstorm WarningFFCCatoosa, Murray, Whitfield48 min
Apr 27, 8:51 AM EDTSevere Thunderstorm WarningFFCClayton, Coweta, Douglas, Fayette, Fulton29 min
Apr 27, 8:54 AM EDTTornado WarningFFCGilmer, Gordon, Murray, Whitfield51 min
Apr 27, 9:02 AM EDTSevere Thunderstorm WarningFFCCatoosa, Dade, Walker16 min
Apr 27, 9:26 AM EDTSevere Thunderstorm WarningFFCFannin, Gilmer, Murray39 min
Apr 27, 1:59 PM EDTSevere Thunderstorm WarningFFCDade, Walker61 min
Apr 27, 2:25 PM EDTTornado WarningFFCDade, Walker34 min
Apr 27, 2:37 PM EDTSevere Thunderstorm WarningFFCCatoosa, Whitfield25 min
Apr 27, 5:07 PM EDTSevere Thunderstorm WarningFFCDade, Walker38 min
Apr 27, 5:14 PM EDTTornado WarningFFCDade, Walker46 min
Apr 27, 5:51 PM EDTTornado WarningFFCCatoosa24 min
Apr 27, 5:53 PM EDTRiver Flood WarningFFCDade11 hr
Apr 27, 6:03 PM EDTSevere Thunderstorm WarningFFCCatoosa, Walker27 min
Apr 27, 6:15 PM EDTSevere Thunderstorm WarningFFCDade30 min
Apr 27, 7:20 PM EDTSevere Thunderstorm WarningFFCChattooga, Dade, Walker55 min
Apr 27, 7:32 PM EDTTornado WarningFFCChattooga, Dade, Walker43 min
Apr 27, 7:59 PM EDTTornado WarningFFCCatoosa, Walker, Whitfield46 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.