Alert archive / Alabama / Tornado Warnings in 2011

Tornado Warning 35, NWS Birmingham, AL

April 11, 2011Fayette County, Walker County, Alabama

NWS Birmingham, AL issued this tornado warning at Apr 11, 2011, 5:42 PM CDT for Fayette County, Walker County, Alabama. It was in force for 22 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 11, 2011, 5:42 PM CDT (22:42 UTC)
Expired: Apr 11, 2011, 6:04 PM CDT
In force: 22 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Fayette County, AL, Walker County, AL

The radar

The Columbus AFB radar (KGWX), 69 km from the middle of the area, began a volume at 22:43 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 11, 5:45 PM CDT	TSTM WND DMG	Fayette, AL	METAL ROOF PARTIALLY BLOWN OFF FACTORY IN FAYETTE. ROOF DAMAGE TO SMALL BUILDING AND HOME 1 MILE EAST OF FAYETTE ON CR 26N. NUMEROUS TRESS ACROSS COUNTY.

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 11, 4:05 PM CDT	Tornado Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 10.7 hours before the alert went out and 96 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: 9 J/kg
Mixed-layer CIN: -684 J/kg
Mixed-layer LCL: 606 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 109 m²/s²
0-3 km storm-relative helicity: 179 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

The text

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

549 
WFUS54 KBMX 112242
TORBMX
ALC057-127-112315-
/O.NEW.KBMX.TO.W.0035.110411T2242Z-110411T2315Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
542 PM CDT MON APR 11 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  CENTRAL FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
  CENTRAL WALKER COUNTY IN CENTRAL ALABAMA...

* UNTIL 615 PM CDT

* AT 539 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
  WAS LOCATED NEAR FAYETTE...AND MOVING EAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  JASPER...CORDOVA...BANKSTON...BERRY...BOLEY SPRINGS...OAKMAN...
  PARRISH...GORGAS...GORGAS STEAM PLANT AND FOWLERS CROSSROADS.

THIS INCLUDES...
US 78 EXIT NUMBERS 61 THROUGH 72...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE
LOWEST FLOOR OF A STURDY BUILDING.

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

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

LAT...LON 3377 8794 3387 8719 3363 8716 3361 8757
      3362 8763 3361 8764 3359 8791
TIME...MOT...LOC 2242Z 264DEG 38KT 3369 8782

$$

GOGGINS

2 follow-up statements

606 
WWUS54 KBMX 112253
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
553 PM CDT MON APR 11 2011

ALC057-127-112315-
/O.CON.KBMX.TO.W.0035.000000T0000Z-110411T2315Z/
FAYETTE AL-WALKER AL-
553 PM CDT MON APR 11 2011

...A TORNADO WARNING REMAINS IN EFFECT FOR CENTRAL WALKER AND CENTRAL
FAYETTE COUNTIES UNTIL 615 PM CDT...

AT 548 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR BANKSTON...OR 5 MILES EAST OF FAYETTE...MOVING
EAST AT 45 MPH.

LOCATIONS IMPACTED INCLUDE...
  JASPER...CORDOVA...BERRY...BOLEY SPRINGS...OAKMAN...PARRISH...
  GORGAS...GORGAS STEAM PLANT...WEST CORONA AND CORONA.

THIS INCLUDES...
US 78 EXIT NUMBERS 61 THROUGH 72...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS LINE OF THUNDERSTORMS IS CAPABLE OF PRODUCING TORNADOES AND
WIDESPREAD SIGNIFICANT WIND DAMAGE. DO NOT WAIT TO SEE OR HEAR THE
TORNADO. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST
FLOOR OF YOUR HOME OR BUSINESS.

&&

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

LAT...LON 3378 8780 3387 8719 3363 8716 3361 8757
      3362 8763 3361 8764 3360 8778
TIME...MOT...LOC 2253Z 264DEG 38KT 3370 8768

$$

GOGGINS

353 
WWUS54 KBMX 112304
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
604 PM CDT MON APR 11 2011

ALC057-127-112314-
/O.CAN.KBMX.TO.W.0035.000000T0000Z-110411T2315Z/
FAYETTE AL-WALKER AL-
604 PM CDT MON APR 11 2011

...THE TORNADO WARNING FOR CENTRAL WALKER AND CENTRAL FAYETTE
COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO 
WATCH REMAINS IN EFFECT UNTIL 11PM CDT.

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

LAT...LON 3378 8780 3387 8719 3363 8716 3361 8757
      3362 8763 3361 8764 3360 8778
TIME...MOT...LOC 2304Z 264DEG 38KT 3371 8754

$$

GOGGINS

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 11, 3:52 AM CDT	Wind Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	20 hr
Apr 11, 5:12 PM CDT	Special Weather Statement	BMX	Fayette, Lamar, Marion, Winston	48 min
Apr 11, 5:36 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter, Tuscaloosa	39 min
Apr 11, 6:08 PM CDT	Tornado Warning	BMX	Greene, Pickens, Tuscaloosa	37 min
Apr 11, 6:13 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Greene, Jefferson, Pickens, Tuscaloosa	47 min
Apr 11, 6:17 PM CDT	Special Weather Statement	BMX	Blount, Walker	43 min
Apr 11, 6:38 PM CDT	Tornado Warning	BMX	Bibb, Tuscaloosa	29 min
Apr 11, 6:43 PM CDT	Tornado Warning	BMX	Greene, Hale	15 min
Apr 11, 6:43 PM CDT	Tornado Warning	BMX	Bibb, Hale, Tuscaloosa	14 min
Apr 11, 6:48 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Dallas, Greene, Hale, Jefferson and 5 more	57 min
Apr 11, 6:52 PM CDT	Tornado Warning	BMX	Blount	38 min
Apr 11, 6:53 PM CDT	Tornado Warning	BMX	Jefferson, Tuscaloosa	52 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.