Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 89, NWS Birmingham, AL

March 31, 2012Fayette County, Walker County, Winston County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 31, 2012, 8:28 PM CDT for Fayette County, Walker County, Winston County, Alabama. It was in force for 47 min. 2 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 31, 2012, 8:28 PM CDT (01:28 UTC)
Expired: Mar 31, 2012, 9:15 PM CDT
In force: 47 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), 74 km from the middle of the area, began a volume at 01:31 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 31, 8:29 PM CDT	HAIL 1	3 Nw Lynn, AL	QUARTER SIZE HAIL REPORTED AT THE NATURAL BRIDGE RESTAURANT. CORRECTED FOR TIME AND LOCATION BASED ON RADAR.
Mar 31, 8:46 PM CDT	HAIL 0.75	Nw Eldridge, AL	PENNY SIZED HAIL IN ELDRIDGE.

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 31, 8:14 PM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.5 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-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: 927 J/kg
Mixed-layer CIN: -7 J/kg
Mixed-layer LCL: 1532 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 21 m²/s²
0-3 km storm-relative helicity: 71 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.

006 
WUUS54 KBMX 010128
SVRBMX
ALC057-127-133-010215-
/O.NEW.KBMX.SV.W.0089.120401T0128Z-120401T0215Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
828 PM CDT SAT MAR 31 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN FAYETTE COUNTY IN WEST CENTRAL ALABAMA...
  NORTHWESTERN WALKER COUNTY IN ALABAMA...
  SOUTHWESTERN WINSTON COUNTY IN NORTHWEST ALABAMA...

* UNTIL 915 PM CDT

* AT 826 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR LYNN...AND
  MOVING SOUTH AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CARBON HILL...ASHBANK...NAUVOO...ELDRIDGE...KANSAS...LUPTON...
  CEDRUM AREA AND HOLLY GROVE.

THIS INCLUDES...
US 78 EXIT NUMBERS 39 THROUGH 52...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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 8735 3375 8765 3391 8765 3392 8764
      3409 8764 3409 8744
TIME...MOT...LOC 0128Z 354DEG 23KT 3404 8757

$$

GRANTHAM

2 follow-up statements

143 
WWUS54 KBMX 010144
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
844 PM CDT SAT MAR 31 2012

ALC133-010154-
/O.CAN.KBMX.SV.W.0089.000000T0000Z-120401T0215Z/
WINSTON AL-
844 PM CDT SAT MAR 31 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN WINSTON 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 3400 8762 3400 8741 3378 8735 3375 8765
      3391 8765 3392 8764 3400 8764 3400 8763
TIME...MOT...LOC 0144Z 354DEG 23KT 3394 8756

$$

ALC057-127-010215-
/O.CON.KBMX.SV.W.0089.000000T0000Z-120401T0215Z/
FAYETTE AL-WALKER AL-
844 PM CDT SAT MAR 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHWESTERN
WALKER AND NORTHEASTERN FAYETTE COUNTIES UNTIL 915 PM CDT...

AT 840 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
KANSAS...OR 5 MILES NORTHWEST OF CARBON HILL...MOVING SOUTH AT 25
MPH.

LOCATIONS IMPACTED INCLUDE...
  CARBON HILL...ELDRIDGE...KANSAS...LUPTON...CEDRUM AREA...HOLLY
  GROVE AND TOWNLEY.

THIS INCLUDES...
US 78 EXIT NUMBERS 39 THROUGH 52...

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

LAT...LON 3400 8762 3400 8741 3378 8735 3375 8765
      3391 8765 3392 8764 3400 8764 3400 8763
TIME...MOT...LOC 0144Z 354DEG 23KT 3394 8756

$$

GRANTHAM

833 
WWUS54 KBMX 010203
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
903 PM CDT SAT MAR 31 2012

ALC057-127-010215-
/O.CON.KBMX.SV.W.0089.000000T0000Z-120401T0215Z/
FAYETTE AL-WALKER AL-
903 PM CDT SAT MAR 31 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL
WALKER AND NORTHEASTERN FAYETTE COUNTIES UNTIL 915 PM CDT...

AT 859 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
CARBON HILL...MOVING SOUTH AT 25 MPH.

LOCATIONS IMPACTED INCLUDE...
  MAINLY RURAL AREAS OF EASTERN FAYETTE AND WESTERN WALKER COUNTIES.

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

LAT...LON 3388 8765 3389 8749 3377 8742 3375 8765
TIME...MOT...LOC 0203Z 354DEG 23KT 3382 8754

$$

GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 31, 7:13 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	47 min
Mar 31, 7:15 PM CDT	Special Weather Statement	BMX	Clay, Randolph, Talladega	45 min
Mar 31, 7:23 PM CDT	Severe Thunderstorm Warning	BMX	Walker	52 min
Mar 31, 7:39 PM CDT	Severe Thunderstorm Warning	BMX	Winston	51 min
Mar 31, 7:55 PM CDT	Special Weather Statement	BMX	Chambers, Coosa, Elmore, Lee, Tallapoosa	50 min
Mar 31, 7:58 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Tuscaloosa	47 min
Mar 31, 8:14 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Tuscaloosa, Walker	46 min
Mar 31, 8:21 PM CDT	Special Weather Statement	BMX	Shelby	24 min
Mar 31, 8:36 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Shelby	39 min
Mar 31, 8:44 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	106 min
Mar 31, 8:59 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Tuscaloosa	46 min
Mar 31, 9:10 PM CDT	Special Weather Statement	BMX	Chilton	50 min
Mar 31, 9:12 PM CDT	Special Weather Statement	BMX	Walker	48 min
Mar 31, 9:39 PM CDT	Special Weather Statement	BMX	Bibb	51 min
Mar 31, 9:56 PM CDT	Special Weather Statement	BMX	Autauga	49 min
Mar 31, 9:57 PM CDT	Special Weather Statement	BMX	Marion	48 min
Mar 31, 10:03 PM CDT	Severe Thunderstorm Warning	BMX	Marion	42 min
Mar 31, 10:39 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	51 min
Mar 31, 11:29 PM CDT	Special Weather Statement	BMX	Lamar	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning in 2012

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.