Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 89, NWS Birmingham, AL

April 15, 20114 counties in Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 2011, 11:21 PM CDT for 4 counties in Alabama. It was in force for 54 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, 11:21 PM CDT (04:21 UTC)
Expired
Apr 16, 2011, 12:15 AM CDT
In force
54 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

Counties Chambers County, AL, Coosa County, AL, Elmore County, AL, Tallapoosa County, AL

What was reported inside it

TimeReportWhereRemark
Apr 15, 11:25 PM CDTTORNADO6 Nw Central, ALSIGNIFICANT STRUCTURE DAMAGE NEAR THE WEOKA COMMUNITY ONE MILE SOUTH OF THE COUNTY LINE BETWEEN STATE HWY 231 AND 9.
Apr 15, 11:40 PM CDTTSTM WND DMGWind Creek State Park, ALNUMEROUS TREES DOWN IN AND AROUND WIND CREEK STATE PARK. POSSIBLE TORNADO.
Apr 15, 11:42 PM CDTTORNADO 15 Se Alexander City, ALAN EF-1 TORNADO TOUCHED DOWN IN A WOODED AREA ON THE EAST SIDE OF LAKE MARTIN...OR 4 MILES SOUTHWEST OF JACKSONS GAP. MOST OF THE DAMAGE CONSISTED OF UPROOTED AND SNAPPED HARD AND SOFTWOOD TREES. AS THE TORNADO CONTINUED NORTHEAST AND CROSSED HIGHWAY 280...3 H

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, 4.4 hours before the alert went out and 126 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.

512 
WFUS54 KBMX 160421
TORBMX
ALC017-037-051-123-160515-
/O.NEW.KBMX.TO.W.0089.110416T0421Z-110416T0515Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1121 PM CDT FRI APR 15 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHEASTERN COOSA COUNTY IN EAST CENTRAL ALABAMA...
  NORTHEASTERN ELMORE COUNTY IN EAST CENTRAL ALABAMA...
  CENTRAL TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 1215 AM CDT

* AT 1117 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR TEN CEDAR ESTATES...OR 8 MILES SOUTHWEST OF
  EQUALITY...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  EQUALITY...DADEVILLE...CAMP HILL...NIXBURG...MARTIN LAKE AT
  KOWALIGA...MARTIN DAM...WIND CREEK STATE PARK...STILL WATERS
  RESORT...JACKSONS' GAP AND JACKSONS GAP.

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 3273 8540 3275 8542 3273 8543 3273 8560
      3271 8562 3271 8568 3270 8568 3270 8570
      3268 8570 3262 8614 3280 8621 3309 8549
      3273 8535
TIME...MOT...LOC 0421Z 251DEG 41KT 3270 8615

$$

17/KLAWS
2 follow-up statements
203 
WWUS54 KBMX 160434
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1134 PM CDT FRI APR 15 2011

ALC017-037-051-123-160515-
/O.CON.KBMX.TO.W.0089.000000T0000Z-110416T0515Z/
ELMORE AL-COOSA AL-TALLAPOOSA AL-CHAMBERS AL-
1134 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN CHAMBERS...CENTRAL
TALLAPOOSA...SOUTHEASTERN COOSA AND NORTHEASTERN ELMORE COUNTIES
UNTIL 1215 AM CDT...

AT 1131 PM CDT...EMERGENCY MANAGEMENT REPORTED A TORNADO WITH 
SIGNIFICANT DAMAGE IN NORTHERN ELMORE COUNTY.  THIS TORNADO WAS 
LOCATED NEAR EQUALITY...MOVING NORTHEAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  DADEVILLE...CAMP HILL...WIND CREEK STATE PARK...STILL WATERS
  RESORT...JACKSONS' GAP...JACKSONS GAP...WAVERLY...RIDGE GROVE...
  WEST CHAMBERS AND STURKIE.

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

LAT...LON 3273 8535 3273 8539 3275 8542 3273 8543
      3273 8560 3271 8562 3271 8568 3270 8568
      3270 8570 3268 8570 3270 8609 3281 8613
      3309 8549
TIME...MOT...LOC 0434Z 241DEG 40KT 3279 8601

$$

17/KLAWS
751 
WWUS54 KBMX 160448
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1148 PM CDT FRI APR 15 2011

ALC037-051-160458-
/O.CAN.KBMX.TO.W.0089.000000T0000Z-110416T0515Z/
ELMORE AL-COOSA AL-
1148 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR SOUTHEASTERN COOSA AND NORTHEASTERN ELMORE
COUNTIES 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 3282 8560 3279 8589 3289 8594 3309 8549
      3284 8539
TIME...MOT...LOC 0448Z 244DEG 44KT 3287 8583

$$

ALC017-123-160515-
/O.CON.KBMX.TO.W.0089.000000T0000Z-110416T0515Z/
TALLAPOOSA AL-CHAMBERS AL-
1148 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL CHAMBERS AND
CENTRAL TALLAPOOSA COUNTIES UNTIL 1215 AM CDT...

AT 1144 PM CDT...EMERGENCY MANAGEMENT REPORTED A TORNADO.  THIS
TORNADO WAS LOCATED NEAR WIND CREEK STATE PARK...OR 6 MILES SOUTHEAST
OF ALEXANDER CITY...MOVING NORTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  DADEVILLE...RIDGE GROVE...WEST CHAMBERS...TRAMMEL CROSSROADS...
  PENTON...EAGLE CREEK...HORSESHOE BEND NATIONAL MILITARY PARK AND
  HORSESHOE BEND.

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

LAT...LON 3282 8560 3279 8589 3289 8594 3309 8549
      3284 8539
TIME...MOT...LOC 0448Z 244DEG 44KT 3287 8583

$$

17/KLAWS

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, 8:52 PM CDTTornado WarningBMXAutauga, Elmore38 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, 11:28 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.