Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 13, NWS Birmingham, AL

February 24, 2011Fayette County, Walker County, Winston County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Feb 24, 2011, 10:44 PM CST for Fayette County, Walker County, Winston County, Alabama. It was in force for 46 min. 9 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
Feb 24, 2011, 10:44 PM CST (04:44 UTC)
Expired
Feb 24, 2011, 11:30 PM CST
In force
46 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

Counties Fayette County, AL, Walker County, AL, Winston County, AL

The radar

The Columbus AFB radar (KGWX), 96 km from the middle of the area, began a volume at 04:43 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

TimeReportWhereRemark
Feb 24, 10:48 PM CSTTSTM WND DMG10 Sw Double Springs, ALTREES DOWN.
Feb 24, 11:02 PM CSTTSTM WND DMG5 S Mcdowell Camp Groun, ALBARN DAMAGED ON DUNCAN ROAD BETWEEN AL 5 AND AL 195.
Feb 24, 11:04 PM CSTTSTM WND DMG4 Nw Jasper, ALTREES WERE BLOWN DOWN ON SCOTT CEMETARY ROAD.
Feb 24, 11:05 PM CSTTSTM WND DMG1 Wnw Nesmith, ALROOF OFF MOBILE HOME AND TREES DOWN ON CR 39 AT AL 278.
Feb 24, 11:05 PM CSTTSTM WND DMGArley, ALTREES DOWN.
Feb 24, 11:09 PM CSTTSTM WND DMG1 Se Jasper, ALDAMAGE TO EASTSIDE BAPTIST CHURCH ON HIGHWAY 118 NEXT TO THE JASPER MALL.
Feb 24, 11:09 PM CSTTSTM WND DMG4 N Jasper, ALTREES WERE BLOWN DOWN NEAR CHRISTY LANE AND GAINES ROAD NEAR HIGHWAY 257 CURRY HIGHWAY.
Feb 24, 11:10 PM CSTTSTM WND DMGJasper, ALTREES DOWN.
Feb 24, 11:18 PM CSTTSTM WND DMG1 Sse Smith Dam, ALTREES DOWN ON SMITH LAKE DAM ROAD NEAR AL 69.

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.

IssuedProductOfficeLasted
Feb 24, 8:30 PM CSTTornado WatchSPC6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 4.7 hours before the alert went out and 106 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-pSkew-T log-p diagram, Birmingham, AL at 00:00Z on 2011-02-25Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 52 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 00:00Z on 2011-02-25The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 162 square meters per square second.1939587897Sfc1 km3 km6 km9 kmRMLM
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
52 J/kg
Mixed-layer CIN
-7 J/kg
Mixed-layer LCL
1096 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
162 m²/s²
0-3 km storm-relative helicity
199 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.

842 
WUUS54 KBMX 250444
SVRBMX
ALC057-127-133-250530-
/O.NEW.KBMX.SV.W.0013.110225T0444Z-110225T0530Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1044 PM CST THU FEB 24 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
  NORTHERN WALKER COUNTY IN CENTRAL ALABAMA...
  WINSTON COUNTY IN NORTHWEST ALABAMA...

* UNTIL 1130 PM CST

* AT 1039 PM CST...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  ASHRIDGE TO 7 MILES SOUTH OF GLEN ALLEN...AND MOVING EAST AT 60
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  CARBON HILL...ARLEY...JASPER...WINSTON FREE STATE BARN...KANSAS...
  ASHBANK...DOUBLE SPRINGS AND NAUVOO.

THIS INCLUDES...
US 78 EXIT NUMBERS 39 THROUGH 61...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THESE STORMS HAVE A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CST FRIDAY MORNING FOR
NORTHERN ALABAMA.

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

LAT...LON 3431 8713 3430 8711 3394 8710 3392 8708
      3389 8708 3389 8699 3383 8696 3380 8779
      3392 8772 3391 8764 3406 8764 3432 8750
TIME...MOT...LOC 0444Z 270DEG 53KT 3427 8738 3378 8765

$$

27
1 follow-up statement
469 
WWUS54 KBMX 250501
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1101 PM CST THU FEB 24 2011

ALC057-127-133-250530-
/O.CON.KBMX.SV.W.0013.000000T0000Z-110225T0530Z/
FAYETTE AL-WALKER AL-WINSTON AL-
1101 PM CST THU FEB 24 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
WINSTON...NORTHERN WALKER AND NORTHEASTERN FAYETTE COUNTIES UNTIL
1130 PM CST...

AT 1057 PM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM INMANFIELD TO OAKMAN...MOVING EAST AT 60 MPH.

LOCATIONS IMPACTED INCLUDE...
  JASPER...LAKE SHORE...CURRY...MANCHESTER AND WILSON BEND.

THIS INCLUDES...
US 78 EXIT NUMBERS 46 THROUGH 57...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN
DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY
LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF
SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL
INTERIOR ROOM.

THIS STORM HAS A HISTORY OF PRODUCING DESTRUCTIVE WINDS. SEEK 
SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.

&&

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

LAT...LON 3430 8711 3394 8710 3392 8708 3389 8708
      3389 8699 3383 8696 3381 8763 3430 8736
      3431 8713
TIME...MOT...LOC 0501Z 270DEG 53KT 3426 8707 3378 8735

$$

27

The office that day

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

IssuedProductOfficeCountiesLasted
Feb 24, 9:35 PM CSTSevere Thunderstorm WarningBMXFayette, Lamar, Marion40 min
Feb 24, 9:57 PM CSTTornado WarningBMXMarion33 min
Feb 24, 10:04 PM CSTSevere Thunderstorm WarningBMXGreene, Pickens41 min
Feb 24, 10:10 PM CSTSevere Thunderstorm WarningBMXFayette, Lamar, Marion, Walker, Winston50 min
Feb 24, 10:30 PM CSTTornado WarningBMXFayette, Walker45 min
Feb 24, 10:41 PM CSTSevere Thunderstorm WarningBMXFayette, Greene, Jefferson, Lamar, Pickens, Tuscaloosa and 1 more49 min
Feb 24, 11:16 PM CSTTornado WarningBMXBlount, Walker44 min
Feb 24, 11:21 PM CSTTornado WarningBMXBlount, Jefferson, Walker39 min
Feb 24, 11:24 PM CSTSevere Thunderstorm WarningBMXBibb, Greene, Hale, Jefferson, St. Clair, Shelby and 3 more66 min
Feb 24, 11:25 PM CSTSevere Thunderstorm WarningBMXBlount, Etowah, Jefferson, St. Clair, Walker50 min
Feb 24, 11:26 PM CSTSevere Thunderstorm WarningBMXBlount, Etowah, Jefferson, St. Clair49 min
Feb 24, 11:38 PM CSTSevere Thunderstorm WarningBMXDallas, Greene, Hale, Marengo, Perry, Sumter67 min
Feb 25, 12:09 AM CSTSevere Thunderstorm WarningBMXCalhoun, Cherokee, Cleburne, Etowah, St. Clair57 min
Feb 25, 12:12 AM CSTSevere Thunderstorm WarningBMXBibb, Chilton, Clay, Coosa, Shelby, Talladega63 min
Feb 25, 12:29 AM CSTTornado WarningBMXCherokee, Etowah46 min
Feb 25, 1:17 AM CSTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Randolph, Talladega43 min
Feb 25, 2:06 AM CSTSpecial Weather StatementBMXBullock, Chambers, Elmore, Lee, Lowndes, Macon and 3 more39 min
Feb 25, 2:45 AM CSTSpecial Weather StatementBMXBarbour, Bullock, Lee, Macon, Russell45 min
Feb 25, 3:35 AM CSTSpecial Weather StatementBMXBarbour, Pike, Russell40 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011Every severe thunderstorm warning 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.