Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 85, NWS Birmingham, AL

April 15, 20114 counties in Alabama

NWS Birmingham, AL issued this tornado warning at Apr 15, 2011, 9:15 PM CDT for 4 counties in Alabama. It was in force for 30 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, 9:15 PM CDT (02:15 UTC)
Expired: Apr 15, 2011, 9:45 PM CDT
In force: 30 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Autauga County, AL, Chilton County, AL, Coosa County, AL, Elmore County, AL

The radar

The Birmingham radar (KBMX), 57 km from the middle of the area, began a volume at 02:17 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

Time	Report	Where	Remark
Apr 15, 9:15 PM CDT	TSTM WND DMG	Marbury, AL	TREES DOWN AT CR56 AND CR43. POSSIBLE TORNADO.
Apr 15, 9:26 PM CDT	TSTM WND DMG	Titus, AL	POSSIBLE TORNADO IN THE TITUS COMMUNITY. DOWNED TREES, DEBRIS, STRUCTURE DAMAGE.
Apr 15, 9:28 PM CDT	TORNADO 0	1 Nne Titus, AL	AN 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.

Issued	Product	Office	Lasted
Apr 15, 7:48 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 00:00Z, 2.3 hours before the alert went out and 186 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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.

960 
WFUS54 KBMX 160215
TORBMX
ALC001-021-037-051-160245-
/O.NEW.KBMX.TO.W.0085.110416T0215Z-110416T0245Z/

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN AUTAUGA COUNTY IN CENTRAL ALABAMA...
  EAST CENTRAL CHILTON COUNTY IN CENTRAL ALABAMA...
  SOUTH CENTRAL COOSA COUNTY IN EAST CENTRAL ALABAMA...
  NORTHWESTERN ELMORE COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 945 PM CDT

* AT 912 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR MARBURY...OR 13 MILES NORTH OF PRATTVILLE...AND
  MOVING NORTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ROCKFORD...MARBURY...VERBENA...WEOKA MILLS...TITUS...WELONA...
  HIGGINS FERRY PARK...DOLLAR...SPEED AND PENTONVILLE.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 186 THROUGH 200...

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 3298 8634 3280 8606 3252 8647 3264 8665
TIME...MOT...LOC 0215Z 219DEG 32KT 3267 8646

$$

1 follow-up statement

978 
WWUS54 KBMX 160229
SVSBMX

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

ALC001-021-160239-
/O.CAN.KBMX.TO.W.0085.000000T0000Z-110416T0245Z/
AUTAUGA AL-CHILTON AL-
929 PM CDT FRI APR 15 2011

...THE TORNADO WARNING FOR EAST CENTRAL CHILTON AND NORTHEASTERN 
AUTAUGA COUNTIES IS CANCELLED...

HOWEVER...ADDITIONAL STORMS ARE MOVING IN FROM THE SOUTHWEST AND 
ADDITIONAL WARNINGS MAY BE NEEDED LATER.

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

LAT...LON 3266 8642 3275 8641 3276 8638 3277 8639
      3278 8640 3296 8630 3280 8606 3261 8634
TIME...MOT...LOC 0229Z 219DEG 32KT 3273 8630

$$

ALC037-051-160245-
/O.CON.KBMX.TO.W.0085.000000T0000Z-110416T0245Z/
ELMORE AL-COOSA AL-
929 PM CDT FRI APR 15 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL COOSA AND
NORTHWESTERN ELMORE COUNTIES UNTIL 945 PM CDT...

AT 926 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR TITUS...OR 13 MILES WEST OF EQUALITY...MOVING
NORTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  ROCKFORD...WELONA...SPEED...PENTONVILLE...LYLE AND NIXBURG.

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 3266 8642 3275 8641 3276 8638 3277 8639
      3278 8640 3296 8630 3280 8606 3261 8634
TIME...MOT...LOC 0229Z 219DEG 32KT 3273 8630

$$

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 15, 7:03 PM CDT	Tornado Warning	BMX	Autauga, Chilton, Dallas, Perry	57 min
Apr 15, 7:06 PM CDT	Tornado Warning	BMX	Lowndes, Montgomery	39 min
Apr 15, 7:09 PM CDT	Tornado Warning	BMX	Dallas, Marengo, Perry	66 min
Apr 15, 7:33 PM CDT	Areal Flood Advisory	BMX	Marengo	3 hr
Apr 15, 7:41 PM CDT	Tornado Warning	BMX	Chilton, Coosa	28 min
Apr 15, 8:10 PM CDT	Tornado Warning	BMX	Autauga, Chilton, Dallas, Perry	50 min
Apr 15, 8:52 PM CDT	Tornado Warning	BMX	Autauga, Elmore	38 min
Apr 15, 9:19 PM CDT	Tornado Warning	BMX	Autauga, Dallas, Lowndes	41 min
Apr 15, 9:37 PM CDT	Tornado Warning	BMX	Coosa, Elmore, Tallapoosa	38 min
Apr 15, 10:32 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Dallas, Elmore, Lowndes and 2 more	28 min
Apr 15, 10:43 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Clay, Cleburne, Coosa, Randolph, Talladega and 1 more	32 min
Apr 15, 10:44 PM CDT	Tornado Warning	BMX	Autauga, Coosa, Elmore	46 min
Apr 15, 11:20 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery, Pike	40 min
Apr 15, 11:21 PM CDT	Tornado Warning	BMX	Chambers, Coosa, Elmore, Tallapoosa	54 min
Apr 15, 11:28 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Cleburne, Randolph, Tallapoosa	47 min
Apr 15, 11:52 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Montgomery, Pike	38 min
Apr 15, 11:53 PM CDT	Tornado Warning	BMX	Chambers, Randolph, Tallapoosa	52 min
Apr 16, 12:14 AM CDT	Severe Thunderstorm Warning	BMX	Bullock, Montgomery, Pike	46 min
Apr 16, 12:36 AM CDT	Flash Flood Warning	BMX	Chambers, Randolph, Tallapoosa	3 hr
Apr 16, 12:41 AM CDT	Severe Thunderstorm Warning	BMX	Bullock, Lee, Macon, Russell	34 min
Apr 16, 12:55 AM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Montgomery, Pike	50 min
Apr 16, 1:26 AM CDT	Severe Thunderstorm Warning	BMX	Bullock, Lee, Macon, Russell	49 min
Apr 16, 2:11 AM CDT	Severe Thunderstorm Warning	BMX	Lee, Russell	19 min
Apr 16, 2:58 AM CDT	Special Weather Statement	BMX	Russell	47 min
Apr 16, 4:13 AM CDT	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	15 hr

Nearby

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