Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 127, NWS Birmingham, AL

April 27, 20114 counties in Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 7:33 PM CDT for 4 counties in Alabama. It was in force for 57 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, 7:33 PM CDT (00:33 UTC)
Expired
Apr 27, 2011, 8:30 PM CDT
In force
57 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

Counties Autauga County, AL, Coosa County, AL, Elmore County, AL, Tallapoosa County, AL

What was reported inside it

TimeReportWhereRemark
Apr 27, 8:12 PM CDTTORNADO 45 N Wetumpka, AL*** 9 FATAL *** THE TORNADO TOUCHED DOWN ALONG COUNTY ROAD 209 NEAR MEADOWVIEW DRIVE WHERE A FEW SNAPPED TREES WERE NOTED. FROM THERE, THE TORNADO QUICKLY INTENSIFIED AS IT MOVED NORTHEAST THROUGH DEXTER WIDENING AND PRODUCING EF-2 DAMAGE TO SEVERAL HOMES. FRO
Apr 27, 8:24 PM CDTTORNADOSantuck, ALSTRUCTURAL DAMAGE IN THE DEXTER ROAD AREA OF SANTUCK.

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, 1:42 PM CDTTornado Watch PDSSPC8 hr
Apr 27, 5:52 PM CDTTornado Watch PDSSPC9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.6 hours before the alert went out and 72 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, Birmingham, AL at 00:00Z on 2011-04-28Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 3065 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, Birmingham, AL at 00:00Z on 2011-04-28The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 448 square meters per square second.1939587897Sfc1 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
3065 J/kg
Mixed-layer CIN
-4 J/kg
Mixed-layer LCL
711 m above ground
0-6 km bulk shear
73 kt
0-1 km storm-relative helicity
448 m²/s²
0-3 km storm-relative helicity
480 m²/s²
Significant tornado parameter
9.6
Supercell composite
33.6

Open this sounding in Storm Lab

The text

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

507 
WFUS54 KBMX 280033
TORBMX
ALC001-037-051-123-280130-
/O.NEW.KBMX.TO.W.0127.110428T0033Z-110428T0130Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
733 PM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN AUTAUGA COUNTY IN CENTRAL ALABAMA...
  SOUTHEASTERN COOSA COUNTY IN EAST CENTRAL ALABAMA...
  NORTHWESTERN ELMORE COUNTY IN EAST CENTRAL ALABAMA...
  WEST CENTRAL TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 830 PM CDT

* AT 731 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR AUTAUGAVILLE...OR 14 MILES WEST OF PRATTVILLE...
  AND MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PRATTVILLE...WETUMPKA...ROCKFORD...EQUALITY...KELLYTON...BOOTH...
  AUTAUGA COUNTY AIRPORT...COOSADA...DEATSVILLE AND MARBURY.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 181 THROUGH 193...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3239 8661 3241 8662 3241 8665 3238 8666
      3236 8669 3244 8676 3272 8645 3271 8641
      3275 8642 3276 8638 3277 8639 3305 8607
      3270 8575
TIME...MOT...LOC 0034Z 232DEG 47KT 3243 8664

$$

61
2 follow-up statements
656 
WWUS54 KBMX 280058
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
758 PM CDT WED APR 27 2011

ALC001-037-051-123-280130-
/O.CON.KBMX.TO.W.0127.000000T0000Z-110428T0130Z/
AUTAUGA AL-ELMORE AL-COOSA AL-TALLAPOOSA AL-
758 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL TALLAPOOSA...
SOUTHEASTERN COOSA...NORTHWESTERN ELMORE AND NORTHEASTERN AUTAUGA
COUNTIES UNTIL 830 PM CDT...

AT 754 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR DEATSVILLE...OR 7 MILES NORTH OF MILLBROOK...
MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  WETUMPKA...EQUALITY...ROCKFORD...KELLYTON...WEOKA MILLS...TITUS...
  TEN CEDAR ESTATES...WELONA...DEXTER AND SANTUCK.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 181 THROUGH 193...

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3270 8575 3247 8642 3251 8650 3256 8654
      3267 8650 3272 8645 3271 8641 3275 8641
      3276 8638 3277 8639 3305 8607
TIME...MOT...LOC 0058Z 232DEG 47KT 3262 8634

$$

27
031 
WWUS54 KBMX 280106
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
806 PM CDT WED APR 27 2011

ALC001-280116-
/O.CAN.KBMX.TO.W.0127.000000T0000Z-110428T0130Z/
AUTAUGA AL-
806 PM CDT WED APR 27 2011

...THE TORNADO WARNING FOR NORTHEASTERN AUTAUGA COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3270 8575 3251 8629 3252 8636 3269 8642
      3275 8641 3276 8638 3277 8639 3305 8607
TIME...MOT...LOC 0106Z 233DEG 45KT 3262 8628

$$

ALC037-051-123-280130-
/O.CON.KBMX.TO.W.0127.000000T0000Z-110428T0130Z/
ELMORE AL-COOSA AL-TALLAPOOSA AL-
806 PM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL TALLAPOOSA...
SOUTHEASTERN COOSA AND NORTHWESTERN ELMORE COUNTIES UNTIL 830 PM
CDT...

AT 804 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR TEN CEDAR ESTATES...OR 7 MILES NORTHWEST OF
WETUMPKA...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  ROCKFORD...EQUALITY...KELLYTON...WEOKA MILLS...TITUS...TEN CEDAR
  ESTATES...WELONA...DEXTER...SANTUCK AND SPEED.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3270 8575 3251 8629 3252 8636 3269 8642
      3275 8641 3276 8638 3277 8639 3305 8607
TIME...MOT...LOC 0106Z 233DEG 45KT 3262 8628

$$

17

The office that day

Everything else NWS Birmingham, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 27, 7:07 PM CDTTornado Warning EmergencyBMXBibb, Chilton, Shelby53 min
Apr 27, 7:17 PM CDTSevere Thunderstorm WarningBMXFayette, Marion, Walker, Winston43 min
Apr 27, 7:17 PM CDTTornado Warning EmergencyBMXCalhoun, Cherokee, Etowah43 min
Apr 27, 7:28 PM CDTTornado WarningBMXHale, Marengo, Sumter62 min
Apr 27, 7:31 PM CDTTornado WarningBMXCalhoun, Cleburne, Etowah, St. Clair, Shelby, Talladega59 min
Apr 27, 7:54 PM CDTTornado WarningBMXSt. Clair, Shelby, Talladega51 min
Apr 27, 8:02 PM CDTTornado WarningBMXClay, Cleburne, Coosa, Randolph, Tallapoosa58 min
Apr 27, 8:03 PM CDTTornado WarningBMXBlount15 min
Apr 27, 8:11 PM CDTSevere Thunderstorm WarningBMXGreene, Sumter64 min
Apr 27, 8:17 PM CDTTornado WarningBMXDallas, Hale, Marengo, Perry58 min
Apr 27, 8:18 PM CDTTornado WarningBMXCalhoun, Cherokee, Cleburne42 min
Apr 27, 8:20 PM CDTTornado Warning EmergencyBMXChambers, Elmore, Lee, Tallapoosa55 min
Apr 27, 8:21 PM CDTTornado WarningBMXCalhoun, St. Clair, Talladega21 min
Apr 27, 9:00 PM CDTTornado Warning EmergencyBMXChambers60 min
Apr 27, 9:03 PM CDTSevere Thunderstorm WarningBMXCherokee42 min
Apr 27, 9:03 PM CDTTornado WarningBMXAutauga, Chilton, Dallas, Perry57 min
Apr 27, 9:36 PM CDTSevere Thunderstorm WarningBMXDallas, Hale, Marengo, Perry54 min
Apr 27, 9:37 PM CDTTornado WarningBMXChambers, Lee, Tallapoosa38 min
Apr 27, 9:46 PM CDTTornado WarningBMXChilton, Coosa, Tallapoosa37 min
Apr 27, 9:51 PM CDTSevere Thunderstorm WarningBMXCalhoun, Cherokee, Etowah39 min
Apr 27, 9:55 PM CDTAreal Flood AdvisoryBMXDallas, Marengo, Perry3 hr
Apr 27, 10:18 PM CDTSevere Thunderstorm WarningBMXLee27 min
Apr 27, 10:31 PM CDTTornado WarningBMXLee12 min
Apr 27, 10:39 PM CDTSevere Thunderstorm WarningBMXChambers, Clay, Coosa, Elmore, Randolph, Tallapoosa49 min
Apr 27, 11:15 PM CDTSevere Thunderstorm WarningBMXDallas, Lowndes45 min
Apr 27, 11:31 PM CDTSevere Thunderstorm WarningBMXAutauga, Elmore, Lowndes, Montgomery44 min
Apr 28, 12:01 AM CDTSevere Thunderstorm WarningBMXAutauga, Bullock, Elmore, Lee, Lowndes, Macon and 3 more49 min

Nearby

Tornado Warnings in Alabama, 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.