Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 17, NWS Birmingham, AL

March 26, 2011St. Clair County, Alabama

NWS Birmingham, AL issued this tornado warning at Mar 26, 2011, 2:51 PM CDT for St. Clair County, Alabama. It was in force for 24 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, 2:51 PM CDT (19:51 UTC)
Expired: Mar 26, 2011, 3:15 PM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County St. Clair County, AL

The radar

The Birmingham radar (KBMX), 86 km from the middle of the area, began a volume at 19:54 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, 12:15 PM CDT	Tornado Watch	SPC	8 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.9 hours before the alert went out and 86 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: 54 J/kg
Mixed-layer CIN: -256 J/kg
Mixed-layer LCL: 809 m above ground
0-6 km bulk shear: 54 kt
0-1 km storm-relative helicity: 147 m²/s²
0-3 km storm-relative helicity: 185 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

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

514 
WFUS54 KBMX 261951
TORBMX
ALC115-262015-
/O.NEW.KBMX.TO.W.0017.110326T1951Z-110326T2015Z/

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

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHERN ST. CLAIR COUNTY IN CENTRAL ALABAMA...

* UNTIL 315 PM CDT

* AT 249 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED 5 MILES NORTHEAST OF SPRINGVILLE...AND MOVING SOUTHEAST
  AT 40 MPH.

* LOCATIONS IMPACTED INCLUDE...
  ASHVILLE...RAGLAND...WHITNEY JUNCTION...I 59 REST AREAS AT ONEONTA
  AND NEELY HENRY DAM.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBERS 156 THROUGH 166...

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 3393 8618 3388 8610 3386 8609 3386 8607
      3372 8613 3372 8615 3368 8615 3370 8617
      3369 8620 3366 8617 3363 8617 3379 8645
      3382 8643 3388 8634
TIME...MOT...LOC 1952Z 297DEG 34KT 3380 8637

$$

61

2 follow-up statements

013 
WWUS54 KBMX 262002
SVSBMX

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

ALC115-262015-
/O.CON.KBMX.TO.W.0017.000000T0000Z-110326T2015Z/
ST. CLAIR AL-
302 PM CDT SAT MAR 26 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. CLAIR
COUNTY UNTIL 315 PM CDT...

AT 259 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR ASHVILLE...OR 14 MILES EAST OF SPRINGVILLE...
MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF NORTHEASTERN ST. CLAIR COUNTY.

THIS INCLUDES...
INTERSTATE 59 EXIT NUMBER 166...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

MOTORISTS SHOULD NOT TAKE SHELTER UNDER HIGHWAY OVERPASSES. AS A LAST
RESORT... EITHER PARK YOUR VEHICLE AND STAY PUT...OR ABANDON YOUR
VEHICLE AND LIE DOWN IN A LOW LYING AREA.

&&

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

LAT...LON 3382 8631 3384 8633 3387 8631 3393 8618
      3388 8610 3386 8609 3386 8607 3378 8611
TIME...MOT...LOC 2002Z 269DEG 46KT 3384 8620

$$

61

391 
WWUS54 KBMX 262009
SVSBMX

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

ALC115-262015-
/O.CON.KBMX.TO.W.0017.000000T0000Z-110326T2015Z/
ST. CLAIR AL-
309 PM CDT SAT MAR 26 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHEASTERN ST. CLAIR
COUNTY UNTIL 315 PM CDT...

AT 303 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS 
STORM WAS LOCATED JUST NORTHEAST OF ASHVILLE...OR 11 MILES WEST OF 
MARKTON...MOVING EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EXTREME NORTHEASTERN ST. CLAIR COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

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

LAT...LON 3388 8610 3386 8609 3386 8607 3378 8611
      3383 8622 3387 8622 3393 8618
TIME...MOT...LOC 2009Z 270DEG 40KT 3386 8612

$$

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 26, 3:49 AM CDT	Special Weather Statement	BMX	Marion	41 min
Mar 26, 4:09 AM CDT	Severe Thunderstorm Warning	BMX	Marion	51 min
Mar 26, 4:48 AM CDT	Areal Flood Advisory	BMX	Marion, Winston	117 min
Mar 26, 4:57 AM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	48 min
Mar 26, 6:22 AM CDT	Special Weather Statement	BMX	Marshall	23 min
Mar 26, 7:43 AM CDT	Special Weather Statement	BMX	Marion	47 min
Mar 26, 12:38 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Marengo, Sumter	52 min
Mar 26, 1:05 PM CDT	Tornado Warning	BMX	Greene, Hale, Perry	55 min
Mar 26, 1:25 PM CDT	Tornado Warning	BMX	Fayette, Walker	25 min
Mar 26, 1:36 PM CDT	Tornado Warning	BMX	Dallas, Perry	39 min
Mar 26, 1:46 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa	59 min
Mar 26, 2:32 PM CDT	Severe Thunderstorm Warning	BMX	Clay, Coosa, Tallapoosa	58 min
Mar 26, 2:46 PM CDT	Severe Thunderstorm Warning	BMX	Coosa, Tallapoosa	44 min
Mar 26, 2:49 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Dallas, Elmore, Perry	41 min
Mar 26, 2:59 PM CDT	Severe Thunderstorm Warning	BMX	Etowah, St. Clair	31 min
Mar 26, 3:02 PM CDT	Severe Thunderstorm Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	43 min
Mar 26, 3:07 PM CDT	Tornado Warning	BMX	Chambers, Tallapoosa	53 min
Mar 26, 3:11 PM CDT	Tornado Warning	BMX	Autauga, Elmore	49 min
Mar 26, 3:15 PM CDT	Tornado Warning	BMX	Calhoun, Etowah	30 min
Mar 26, 3:32 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Bullock, Lee, Macon, Russell	43 min
Mar 26, 3:36 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Shelby	39 min
Mar 26, 3:38 PM CDT	Tornado Warning	BMX	Calhoun, Cleburne	37 min
Mar 26, 3:40 PM CDT	Severe Thunderstorm Warning	BMX	Chambers	35 min
Mar 26, 3:53 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Macon, Montgomery, Tallapoosa	45 min
Mar 26, 4:07 PM CDT	Tornado Warning	BMX	Chilton, Shelby	38 min
Mar 26, 4:20 PM CDT	Severe Thunderstorm Warning	BMX	Macon	40 min
Mar 26, 4:39 PM CDT	Tornado Warning	BMX	Coosa, Shelby, Talladega	16 min
Mar 26, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Russell	39 min
Mar 26, 4:54 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Lee, Macon, Russell	51 min
Mar 26, 5:27 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	33 min
Mar 26, 5:42 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Macon, Russell	63 min
Mar 26, 5:54 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah	51 min
Mar 26, 6:21 PM CDT	Tornado Warning	BMX	Russell	24 min
Mar 26, 6:23 PM CDT	Tornado Warning	BMX	Etowah	35 min
Mar 26, 6:29 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	61 min
Mar 26, 6:48 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	25 min
Mar 26, 6:57 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee, Etowah	45 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.