Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 29, NWS Birmingham, AL

March 26, 2011Clay County, St. Clair County, Talladega County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 26, 2011, 10:27 PM CDT for Clay County, St. Clair County, Talladega County, Alabama. It was in force for 15 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Mar 26, 2011, 10:27 PM CDT (03:27 UTC)
Expired: Mar 26, 2011, 10:42 PM CDT
In force: 15 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Clay County, AL, St. Clair County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 86 km from the middle of the area, began a volume at 03:29 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.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 26, 7:47 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 3.5 hours before the alert went out and 87 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: 1774 J/kg
Mixed-layer CIN: -17 J/kg
Mixed-layer LCL: 1230 m above ground
0-6 km bulk shear: 50 kt
0-1 km storm-relative helicity: 274 m²/s²
0-3 km storm-relative helicity: 373 m²/s²
Significant tornado parameter: 2.7
Supercell composite: 16.5

Open this sounding in Storm Lab

The text

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

424 
WFUS54 KBMX 270327
TORBMX
ALC027-115-121-270415-
/O.NEW.KBMX.TO.W.0029.110327T0327Z-110327T0415Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1027 PM CDT SAT MAR 26 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  CLAY COUNTY IN EAST CENTRAL ALABAMA...
  SOUTH CENTRAL ST. CLAIR COUNTY IN CENTRAL ALABAMA...
  NORTHEASTERN TALLADEGA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 1115 PM CDT

* AT 1024 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR PELL CITY...AND MOVING SOUTHEAST AT 35 MPH.

* LOCATIONS IMPACTED INCLUDE...
  TALLADEGA...ASHLAND...LINEVILLE...TALLADEGA SUPERSPEEDWAY...
  TALLADEGA MUNICIPAL AIRPORT...GRANT TOWN...WALDO...BARFIELD...
  HOWELLS COVE AND JACKSON SHOALS.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 162 THROUGH 173...

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 3313 8585 3355 8631 3369 8615 3362 8602
      3361 8602 3359 8599 3359 8595 3352 8582
      3348 8586 3347 8588 3347 8580 3349 8576
      3344 8566
TIME...MOT...LOC 0327Z 300DEG 29KT 3352 8617

$$

17/KLAWS

2 follow-up statements

387 
WWUS54 KBMX 270334
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1034 PM CDT SAT MAR 26 2011

ALC027-115-121-270415-
/O.CON.KBMX.TO.W.0029.000000T0000Z-110327T0415Z/
CLAY AL-TALLADEGA AL-ST. CLAIR AL-
1034 PM CDT SAT MAR 26 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTH CENTRAL ST. CLAIR...
NORTHEASTERN TALLADEGA AND CLAY COUNTIES UNTIL 1115 PM CDT...

AT 1033 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR TALLADEGA...MOVING SOUTHEAST AT 35 MPH.

LOCATIONS IMPACTED INCLUDE...
  TALLADEGA...ASHLAND...LINEVILLE...GRANT TOWN...WALDO...BARFIELD...
  JENIFER...IRONATON...CHANDLER SPRINGS AND GUNTHERTOWN.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 162 THROUGH 173...

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

LAT...LON 3344 8566 3313 8585 3355 8630 3363 8622
      3365 8616 3362 8602 3361 8602 3359 8599
      3359 8595 3352 8582 3347 8588 3347 8580
      3349 8576
TIME...MOT...LOC 0335Z 299DEG 30KT 3349 8608

$$

17/KLAWS

184 
WWUS54 KBMX 270342
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1042 PM CDT SAT MAR 26 2011

ALC027-115-121-270352-
/O.CAN.KBMX.TO.W.0029.000000T0000Z-110327T0415Z/
CLAY AL-TALLADEGA AL-ST. CLAIR AL-
1042 PM CDT SAT MAR 26 2011

...THE TORNADO WARNING FOR SOUTH CENTRAL ST. CLAIR...NORTHEASTERN
TALLADEGA AND CLAY COUNTIES IS CANCELLED...

THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
BEEN CANCELLED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN
EFFECT FOR THE AREA.

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

LAT...LON 3344 8566 3313 8585 3355 8630 3363 8622
      3365 8616 3362 8602 3361 8602 3359 8599
      3359 8595 3352 8582 3347 8588 3347 8580
      3349 8576
TIME...MOT...LOC 0342Z 299DEG 30KT 3346 8602

$$

17/KLAWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 7:12 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne	37 min
Mar 26, 7:19 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	41 min
Mar 26, 7:32 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	28 min
Mar 26, 7:39 PM CDT	Tornado Warning	BMX	Walker	36 min
Mar 26, 8:05 PM CDT	Tornado Warning	BMX	Jefferson, Walker	55 min
Mar 26, 8:21 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	24 min
Mar 26, 8:28 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	62 min
Mar 26, 8:30 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	60 min
Mar 26, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Calhoun, Jefferson, St. Clair, Talladega	25 min
Mar 26, 9:13 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	47 min
Mar 26, 9:16 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	59 min
Mar 26, 9:44 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Marion, Walker, Winston	46 min
Mar 26, 10:12 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Clay, Cleburne, Randolph, Talladega	48 min
Mar 26, 10:16 PM CDT	Areal Flood Advisory	BMX	Calhoun, Cleburne, Jefferson, St. Clair, Shelby, Talladega	3 hr
Mar 26, 10:27 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker	63 min
Mar 26, 10:30 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Jefferson, St. Clair, Shelby, Talladega	45 min
Mar 26, 10:34 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Tuscaloosa	56 min
Mar 26, 10:45 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph, St. Clair, Talladega	45 min
Mar 26, 11:09 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Talladega	36 min
Mar 26, 11:19 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Randolph	41 min
Mar 26, 11:28 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	16 min
Mar 27, 12:32 AM CDT	Severe Thunderstorm Warning	BMX	Randolph	15 min
Mar 27, 12:46 AM CDT	Special Weather Statement	BMX	Clay	44 min
Mar 27, 12:53 AM CDT	Special Weather Statement	BMX	Chambers, Randolph	67 min
Mar 27, 1:06 AM CDT	Tornado Warning	BMX	Chambers	17 min
Mar 27, 1:08 AM CDT	Tornado Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	52 min
Mar 27, 1:12 AM CDT	Tornado Warning	BMX	Chambers, Tallapoosa	48 min
Mar 27, 1:52 AM CDT	Tornado Warning	BMX	Chambers	22 min
Mar 27, 1:53 AM CDT	Tornado Warning	BMX	Chambers, Tallapoosa	13 min
Mar 27, 2:24 AM CDT	Special Weather Statement	BMX	Winston	51 min
Mar 27, 4:00 AM CDT	Special Weather Statement	BMX	Cherokee	45 min
Mar 27, 4:41 AM CDT	Special Weather Statement	BMX	Cherokee, Etowah	49 min
Mar 27, 6:16 AM CDT	Special Weather Statement	BMX	Greene	44 min
Mar 27, 6:26 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Tuscaloosa	49 min
Mar 27, 7:01 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Hale, Tuscaloosa	44 min
Mar 27, 7:11 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Sumter	49 min
Mar 27, 7:42 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Coosa	48 min
Mar 27, 7:55 AM CDT	Special Weather Statement	BMX	Greene, Hale	50 min
Mar 27, 7:58 AM CDT	Special Weather Statement	BMX	Shelby	47 min
Mar 27, 8:32 AM CDT	Special Weather Statement	BMX	Coosa	43 min
Mar 27, 9:45 AM CDT	Special Weather Statement	BMX	Chilton	45 min
Mar 27, 10:02 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Elmore	28 min
Mar 27, 10:27 AM CDT	Special Weather Statement	BMX	Coosa	33 min
Mar 27, 10:40 AM CDT	Special Weather Statement	BMX	Chilton	50 min
Mar 27, 11:02 AM CDT	Special Weather Statement	BMX	Tallapoosa	43 min
Mar 27, 11:37 AM CDT	Special Weather Statement	BMX	Chambers	23 min
Mar 27, 11:41 AM CDT	Special Weather Statement	BMX	Elmore	49 min
Mar 27, 12:05 PM CDT	Special Weather Statement	BMX	Russell	40 min
Mar 27, 12:12 PM CDT	Severe Thunderstorm Warning	BMX	Russell	48 min
Mar 27, 1:29 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	31 min
Mar 27, 6:13 PM CDT	Special Weather Statement	BMX	Barbour	47 min

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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.