Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 71, NWS Birmingham, AL

March 26, 20114 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 26, 2011, 9:44 PM CDT for 4 counties in Alabama. It was in force for 46 min. 3 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: Mar 26, 2011, 9:44 PM CDT (02:44 UTC)
Expired: Mar 26, 2011, 10:30 PM CDT
In force: 46 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

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

The radar

The Columbus AFB radar (KGWX), 75 km from the middle of the area, began a volume at 02:43 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
Mar 26, 10:15 PM CDT	HAIL 1	Jasper, AL	QUARTER SIZE HAIL REPORTED.
Mar 26, 10:22 PM CDT	HAIL 0.88	7 N Jasper, AL	NICKEL SIZE HAIL COVERING THE GROUND.
Mar 26, 10:23 PM CDT	HAIL 2	Jasper, AL	HAIL UP TO 2 INCHES IN DIAMETER REPORTED.

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
Mar 26, 7:47 PM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 2.7 hours before the alert went out and 117 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.

458 
WUUS54 KBMX 270244
SVRBMX
ALC057-093-127-133-270330-
/O.NEW.KBMX.SV.W.0071.110327T0244Z-110327T0330Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
944 PM CDT SAT MAR 26 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTH CENTRAL FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
  SOUTHEASTERN MARION COUNTY IN NORTHWEST ALABAMA...
  NORTHWESTERN WALKER COUNTY IN CENTRAL ALABAMA...
  SOUTHERN WINSTON COUNTY IN NORTHWEST ALABAMA...

* UNTIL 1030 PM CDT

* AT 938 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS STORM
  WAS LOCATED 5 MILES NORTHWEST OF BRILLIANT...OR 10 MILES EAST OF
  HAMILTON...AND MOVING SOUTHEAST AT 50 MPH.

* LOCATIONS IMPACTED INCLUDE...
  WINFIELD...LYNN...CARBON HILL...JASPER...GLEN ALLEN...ELDRIDGE...
  KANSAS AND ASHBANK.

THIS INCLUDES...
US 78 EXIT NUMBERS 22 THROUGH 63...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 300 AM CDT SUNDAY MORNING FOR
NORTHERN ALABAMA.

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

LAT...LON 3413 8731 3398 8711 3371 8730 3394 8795
      3405 8796 3420 8779
TIME...MOT...LOC 0244Z 296DEG 41KT 3406 8774

$$

61

1 follow-up statement

719 
WWUS54 KBMX 270316
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1016 PM CDT SAT MAR 26 2011

ALC057-093-270326-
/O.CAN.KBMX.SV.W.0071.000000T0000Z-110327T0330Z/
FAYETTE AL-MARION AL-
1016 PM CDT SAT MAR 26 2011

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN MARION AND NORTH
CENTRAL FAYETTE COUNTIES 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 3380 8753 3392 8748 3414 8740 3413 8731
      3398 8711 3371 8730
TIME...MOT...LOC 0316Z 293DEG 45KT 3389 8733

$$

ALC127-133-270330-
/O.CON.KBMX.SV.W.0071.000000T0000Z-110327T0330Z/
WALKER AL-WINSTON AL-
1016 PM CDT SAT MAR 26 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
WINSTON AND CENTRAL WALKER COUNTIES UNTIL 1030 PM CDT...

AT 1011 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL.  THIS
STORM WAS LOCATED 7 MILES SOUTHEAST OF NAUVOO...OR 7 MILES EAST OF
CARBON HILL...MOVING SOUTHEAST AT 50 MPH.

LOCATIONS IMPACTED INCLUDE...
  JASPER...FALLS CITY...LAKE SHORE...CURRY AND MANCHESTER.

THIS INCLUDES...
US 78 EXIT NUMBERS 52 THROUGH 65...

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.

&&

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

LAT...LON 3380 8753 3392 8748 3414 8740 3413 8731
      3398 8711 3371 8730
TIME...MOT...LOC 0316Z 293DEG 45KT 3389 8733

$$

61

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, 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, 10:27 PM CDT	Tornado Warning	BMX	Clay, St. Clair, Talladega	15 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

Severe Thunderstorm Warnings in Alabama, 2011 Every 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.