Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 84, NWS Birmingham, AL

April 15, 2011Autauga County, Elmore County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 2011, 8:52 PM CDT for Autauga County, Elmore County, Alabama. It was in force for 38 min. 3 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 15, 2011, 8:52 PM CDT (01:52 UTC)
Expired
Apr 15, 2011, 9:30 PM CDT
In force
38 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

Counties Autauga County, AL, Elmore County, AL

What was reported inside it

TimeReportWhereRemark
Apr 15, 9:15 PM CDTTSTM WND DMGMarbury, ALTREES DOWN AT CR56 AND CR43. POSSIBLE TORNADO.
Apr 15, 9:26 PM CDTTSTM WND DMGTitus, ALPOSSIBLE TORNADO IN THE TITUS COMMUNITY. DOWNED TREES, DEBRIS, STRUCTURE DAMAGE.
Apr 15, 9:28 PM CDTTORNADO 01 Nne Titus, ALAN EF-0 TORNADO TOUCHED DOWN JUST WEST OF GRAYS FERRY RD...0.7 MILES NORTHEAST OF TITUS. FROM THERE IT TRAVELED NORTHEAST CROSSING GRAYS FERRY ROAD LIFTING IN A WOODED AREA ON THE EAST SIDE OF THE ROADWAY. FOUR BARNS WERE DAMAGED. HARDWOOD TREES HAD LARGE LIMB

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 15, 7:48 PM CDTTornado WatchSPC6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 1.9 hours before the alert went out and 195 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 2011-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 406 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, Peachtre/Fal Fld, GA at 00:00Z on 2011-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 373 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
406 J/kg
Mixed-layer CIN
-24 J/kg
Mixed-layer LCL
1138 m above ground
0-6 km bulk shear
68 kt
0-1 km storm-relative helicity
373 m²/s²
0-3 km storm-relative helicity
566 m²/s²
Significant tornado parameter
1.3
Supercell composite
11.3

Open this sounding in Storm Lab

The text

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

826 
WFUS54 KBMX 160152
TORBMX
ALC001-051-160230-
/O.NEW.KBMX.TO.W.0084.110416T0152Z-110416T0230Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
852 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  EASTERN AUTAUGA COUNTY IN CENTRAL ALABAMA...
  WESTERN ELMORE COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 930 PM CDT

* AT 849 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR BOOTH...OR 12 MILES WEST OF PRATTVILLE...AND
  MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  PRATTVILLE...MILLBROOK...WETUMPKA...BOOTH...MARBURY...DEATSVILLE...
  COOSADA...ELMORE...TITUS AND WEOKA MILLS.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 179 THROUGH 193...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

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

LAT...LON 3263 8673 3272 8644 3271 8642 3272 8641
      3276 8629 3275 8617 3249 8604 3247 8622
      3251 8626 3249 8627 3249 8630 3247 8631
      3243 8670
TIME...MOT...LOC 0152Z 246DEG 32KT 3250 8662

$$
1 follow-up statement
917 
WWUS54 KBMX 160206
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
906 PM CDT FRI APR 15 2011

ALC001-051-160230-
/O.CON.KBMX.TO.W.0084.000000T0000Z-110416T0230Z/
AUTAUGA AL-ELMORE AL-
906 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN ELMORE AND EASTERN
AUTAUGA COUNTIES UNTIL 930 PM CDT...

AT 903 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED 6 MILES NORTHEAST OF BOOTH...OR 10 MILES NORTHWEST 
OF PRATTVILLE...MOVING NORTHEAST AT 40 MPH. 

LOCATIONS IMPACTED INCLUDE...
  WETUMPKA...COOSADA...ELMORE...DEATSVILLE...MARBURY...BLUE RIDGE...
  WEOKA MILLS...TITUS...TEN CEDAR ESTATES AND DEXTER.

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

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

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

LAT...LON 3263 8673 3272 8644 3271 8642 3272 8641
      3276 8629 3275 8617 3249 8604 3247 8622
      3251 8626 3249 8627 3249 8630 3247 8631
      3243 8670
TIME...MOT...LOC 0206Z 225DEG 36KT 3261 8650

$$

The office that day

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

IssuedProductOfficeCountiesLasted
Apr 15, 7:03 PM CDTTornado WarningBMXAutauga, Chilton, Dallas, Perry57 min
Apr 15, 7:06 PM CDTTornado WarningBMXLowndes, Montgomery39 min
Apr 15, 7:09 PM CDTTornado WarningBMXDallas, Marengo, Perry66 min
Apr 15, 7:33 PM CDTAreal Flood AdvisoryBMXMarengo3 hr
Apr 15, 7:41 PM CDTTornado WarningBMXChilton, Coosa28 min
Apr 15, 8:10 PM CDTTornado WarningBMXAutauga, Chilton, Dallas, Perry50 min
Apr 15, 9:15 PM CDTTornado WarningBMXAutauga, Chilton, Coosa, Elmore30 min
Apr 15, 9:19 PM CDTTornado WarningBMXAutauga, Dallas, Lowndes41 min
Apr 15, 9:37 PM CDTTornado WarningBMXCoosa, Elmore, Tallapoosa38 min
Apr 15, 10:32 PM CDTSevere Thunderstorm WarningBMXAutauga, Chilton, Coosa, Dallas, Elmore, Lowndes and 2 more28 min
Apr 15, 10:43 PM CDTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Coosa, Randolph, Talladega and 1 more32 min
Apr 15, 10:44 PM CDTTornado WarningBMXAutauga, Coosa, Elmore46 min
Apr 15, 11:20 PM CDTSevere Thunderstorm WarningBMXLowndes, Montgomery, Pike40 min
Apr 15, 11:21 PM CDTTornado WarningBMXChambers, Coosa, Elmore, Tallapoosa54 min
Apr 15, 11:28 PM CDTSevere Thunderstorm WarningBMXChambers, Clay, Cleburne, Randolph, Tallapoosa47 min
Apr 15, 11:52 PM CDTSevere Thunderstorm WarningBMXBullock, Macon, Montgomery, Pike38 min
Apr 15, 11:53 PM CDTTornado WarningBMXChambers, Randolph, Tallapoosa52 min
Apr 16, 12:14 AM CDTSevere Thunderstorm WarningBMXBullock, Montgomery, Pike46 min
Apr 16, 12:36 AM CDTFlash Flood WarningBMXChambers, Randolph, Tallapoosa3 hr
Apr 16, 12:41 AM CDTSevere Thunderstorm WarningBMXBullock, Lee, Macon, Russell34 min
Apr 16, 12:55 AM CDTSevere Thunderstorm WarningBMXBullock, Macon, Montgomery, Pike50 min
Apr 16, 1:26 AM CDTSevere Thunderstorm WarningBMXBullock, Lee, Macon, Russell49 min
Apr 16, 2:11 AM CDTSevere Thunderstorm WarningBMXLee, Russell19 min
Apr 16, 2:58 AM CDTSpecial Weather StatementBMXRussell47 min
Apr 16, 4:13 AM CDTWind AdvisoryBMXAutauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more15 hr

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.