Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 91, NWS Birmingham, AL

April 27, 2011Lamar County, Pickens County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 27, 2011, 3:37 AM CDT for Lamar County, Pickens County, Alabama. It was in force for 38 min. 1 report 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 27, 2011, 3:37 AM CDT (08:37 UTC)
Expired: Apr 27, 2011, 4:15 AM CDT
In force: 38 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Lamar County, AL, Pickens County, AL

The radar

The Columbus AFB radar (KGWX), 34 km from the middle of the area, began a volume at 08:40 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 27, 4:05 AM CDT	TSTM WND DMG	Nw Millport, AL	TREES DOWN ON HWY 96 WEST OF MILLPORT.

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 27, 2:26 AM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 8.6 hours before the alert went out and 137 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: 1044 J/kg
Mixed-layer CIN: -10 J/kg
Mixed-layer LCL: 1119 m above ground
0-6 km bulk shear: 29 kt
0-1 km storm-relative helicity: 111 m²/s²
0-3 km storm-relative helicity: 181 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 5.8

Open this sounding in Storm Lab

The text

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

155 
WFUS54 KBMX 270837
TORBMX
ALC075-107-270915-
/O.NEW.KBMX.TO.W.0091.110427T0837Z-110427T0915Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
337 AM CDT WED APR 27 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  SOUTHERN LAMAR COUNTY IN WEST CENTRAL ALABAMA...
  NORTHWESTERN PICKENS COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 415 AM CDT

* AT 335 AM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR NEW HOPE...OR 7 MILES SOUTH OF COLUMBUS...AND
  MOVING NORTHEAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MILLPORT...ETHELSVILLE...KENNEDY...FOREST...MELBORNE...SHAW...
  STAR...HIGHTOGY AND CODY.

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 3371 8826 3374 8823 3376 8795 3349 8794
      3334 8830
TIME...MOT...LOC 0836Z 236DEG 49KT 3341 8835

$$

2 follow-up statements

740 
WWUS54 KBMX 270849
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
349 AM CDT WED APR 27 2011

ALC075-107-270915-
/O.CON.KBMX.TO.W.0091.000000T0000Z-110427T0915Z/
PICKENS AL-LAMAR AL-
349 AM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHERN LAMAR AND
NORTHWESTERN PICKENS COUNTIES UNTIL 415 AM CDT...

AT 344 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR NEW HOPE...OR 7 MILES SOUTHEAST OF COLUMBUS...
MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  MILLPORT...KENNEDY...MELBORNE...SHAW...STAR...HIGHTOGY AND CODY.

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

LAT...LON 3371 8826 3374 8823 3376 8795 3349 8794
      3334 8830
TIME...MOT...LOC 0849Z 233DEG 47KT 3350 8823

$$

648 
WWUS54 KBMX 270903
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
403 AM CDT WED APR 27 2011

ALC107-270913-
/O.CAN.KBMX.TO.W.0091.000000T0000Z-110427T0915Z/
PICKENS AL-
403 AM CDT WED APR 27 2011

...THE TORNADO WARNING FOR NORTHWESTERN PICKENS COUNTY 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 3369 8815 3373 8810 3376 8795 3354 8795
      3355 8821
TIME...MOT...LOC 0903Z 233DEG 47KT 3361 8805

$$

ALC075-270915-
/O.CON.KBMX.TO.W.0091.000000T0000Z-110427T0915Z/
LAMAR AL-
403 AM CDT WED APR 27 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LAMAR COUNTY
UNTIL 415 AM CDT...

AT 358 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR MILLPORT...MOVING NORTHEAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  KENNEDY...HIGHTOGY AND CODY.

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

LAT...LON 3369 8815 3373 8810 3376 8795 3354 8795
      3355 8821
TIME...MOT...LOC 0903Z 233DEG 47KT 3361 8805

$$

58/02

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 27, 3:45 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	45 min
Apr 27, 3:59 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Lamar, Pickens, Sumter	46 min
Apr 27, 4:13 AM CDT	Tornado Warning	BMX	Pickens	32 min
Apr 27, 4:14 AM CDT	Tornado Warning	BMX	Greene, Pickens, Sumter	31 min
Apr 27, 4:19 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 4:26 AM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 4:28 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Marengo, Sumter	47 min
Apr 27, 4:33 AM CDT	Tornado Warning	BMX	Fayette, Pickens, Tuscaloosa	27 min
Apr 27, 4:40 AM CDT	Severe Thunderstorm Warning	BMX	Fayette, Greene, Hale, Lamar, Pickens, Tuscaloosa	50 min
Apr 27, 4:44 AM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	31 min
Apr 27, 5:07 AM CDT	Tornado Warning	BMX	Fayette, Walker	38 min
Apr 27, 5:11 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Blount, Fayette, Hale, Jefferson, Shelby and 2 more	49 min
Apr 27, 5:14 AM CDT	Tornado Warning	BMX	Jefferson, Tuscaloosa, Walker	31 min
Apr 27, 5:29 AM CDT	Tornado Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	31 min
Apr 27, 5:44 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Dallas, Perry, Shelby	46 min
Apr 27, 5:52 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Chilton, Etowah, Jefferson, St. Clair, Shelby and 1 more	53 min
Apr 27, 6:02 AM CDT	Special Weather Statement	BMX	Autauga, Chilton, Dallas	43 min
Apr 27, 6:21 AM CDT	Severe Thunderstorm Warning	BMX	Blount, Calhoun, Cherokee, Clay, Cleburne, Coosa and 3 more	39 min
Apr 27, 6:49 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Clay, Cleburne, Etowah, Randolph and 1 more	56 min
Apr 27, 8:05 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	25 min
Apr 27, 8:20 AM CDT	Severe Thunderstorm Warning	BMX	Marion	25 min
Apr 27, 10:04 AM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	41 min
Apr 27, 10:42 AM CDT	Special Weather Statement	BMX	Lamar, Marion, Winston	48 min
Apr 27, 10:51 AM CDT	Areal Flood Advisory	BMX	Marion	54 min
Apr 27, 12:08 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	112 min
Apr 27, 2:09 PM CDT	Tornado Warning	BMX	Walker, Winston	31 min
Apr 27, 2:17 PM CDT	Areal Flood Advisory	BMX	Marion, Winston	118 min
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	19 hr
Apr 27, 2:51 PM CDT	River Flood Warning	BMX	Greene, Hale, Marengo, Sumter	6 hr
Apr 27, 2:59 PM CDT	Tornado Warning	BMX	Lamar, Marion	46 min
Apr 27, 3:15 PM CDT	Tornado Warning Emergency	BMX	Pickens, Tuscaloosa	60 min
Apr 27, 3:21 PM CDT	Tornado Warning	BMX	Lamar, Marion	54 min
Apr 27, 3:38 PM CDT	Tornado Warning Emergency	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	67 min
Apr 27, 3:56 PM CDT	Tornado Warning	BMX	Marion	34 min
Apr 27, 3:57 PM CDT	Flash Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 4:00 PM CDT	Tornado Warning Emergency	BMX	Fayette, Pickens, Tuscaloosa, Walker	60 min
Apr 27, 4:31 PM CDT	Tornado Warning	BMX	Pickens, Tuscaloosa	20 min
Apr 27, 4:44 PM CDT	Tornado Warning	BMX	Fayette, Lamar, Marion	61 min
Apr 27, 4:47 PM CDT	Tornado Warning Emergency	BMX	Greene, Pickens, Tuscaloosa	58 min
Apr 27, 4:50 PM CDT	Tornado Warning	BMX	Greene, Hale, Sumter	55 min
Apr 27, 4:55 PM CDT	Tornado Warning Emergency	BMX	Blount, Jefferson, Walker	65 min
Apr 27, 5:22 PM CDT	Tornado Warning	BMX	Fayette, Lamar	68 min
Apr 27, 5:28 PM CDT	Tornado Warning	BMX	Marion, Winston	30 min
Apr 27, 5:31 PM CDT	Tornado Warning Emergency	BMX	Jefferson, Shelby, Tuscaloosa	59 min
Apr 27, 5:38 PM CDT	Tornado Warning Emergency	BMX	Bibb, Greene, Hale, Perry, Tuscaloosa	67 min
Apr 27, 5:39 PM CDT	Tornado Warning	BMX	Blount	21 min
Apr 27, 6:06 PM CDT	Tornado Warning	BMX	Greene, Marengo, Sumter	16 min
Apr 27, 6:14 PM CDT	Tornado Warning	BMX	Fayette, Marion, Walker, Winston	61 min
Apr 27, 6:17 PM CDT	Areal Flood Advisory	BMX	Jefferson	118 min
Apr 27, 6:18 PM CDT	Tornado Warning	BMX	Blount, Jefferson, St. Clair	57 min
Apr 27, 6:20 PM CDT	Tornado Warning	BMX	Bibb, Chilton, Greene, Hale, Perry	55 min
Apr 27, 6:33 PM CDT	Areal Flood Warning	BMX	Marion, Winston	3 hr
Apr 27, 6:35 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	40 min
Apr 27, 6:39 PM CDT	Flash Flood Warning	BMX	Blount, Jefferson, St. Clair	3 hr
Apr 27, 6:39 PM CDT	Tornado Warning Emergency	BMX	Bibb, Chilton, Shelby, Talladega	66 min
Apr 27, 6:49 PM CDT	Tornado Warning Emergency	BMX	Blount, Calhoun, Etowah, St. Clair	56 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.