Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 7, NWS Birmingham, AL

January 23, 2012Pickens County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 23, 2012, 1:56 AM CST for Pickens County, Tuscaloosa County, Alabama. It was in force for 49 min. 5 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: Jan 23, 2012, 1:56 AM CST (07:56 UTC)
Expired: Jan 23, 2012, 2:45 AM CST
In force: 49 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Pickens County, AL, Tuscaloosa County, AL

The radar

The Columbus AFB radar (KGWX), 69 km from the middle of the area, began a volume at 07:57 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
Jan 23, 2:25 AM CST	TSTM WND DMG	5 Ese Gordo, AL	TREES DOWN ON HIGHWAY 140 AND HOLEMAN CHURCH ROAD. TIME ESTIMATED FROM RADAR.
Jan 23, 2:40 AM CST	TSTM WND DMG	3 N Lake Lurleen State, AL	HUGE TREES DOWN ON STATE HIGHWAY 171 NEAR CRAWFORD DRIVE. POSSIBLE TORNADO.
Jan 23, 2:40 AM CST	TORNADO 3	2 Nne Lake Lurleen Stat, AL	DOZENS OF TREES WERE UPROOTED NEAR KOFFMAN RANCH ROAD. ONE WELL CONSTRUCTED SINGLE FAMILY HOME LOST ITS ENTIE ROOF. THE PATH LENGTH WAS ABOUT ONE HALF MILE AND WAS 400 YARDS WIDE.
Jan 23, 2:45 AM CST	TSTM WND DMG	3 S Lake Tuscaloosa Bin, AL	LARGE TREES DOWN BLOCKING THE ROADWAY ON LARRY LAKE ROAD...AS WELL AS A ROOF RIPPED OFF A HOME IN THE MOUNT OLIVE AREA OF COKER.
Jan 23, 2:45 AM CST	TORNADO	3 S Lake Tuscaloosa Bin, AL	TORNADO SPOTTED ON THE GROUND ON LAKE TUSCALOOSA TIERCE PATTON ROAD.

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
Jan 22, 10:59 PM CST	Tornado Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 7.9 hours before the alert went out and 101 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: 223 J/kg
Mixed-layer CIN: -30 J/kg
Mixed-layer LCL: 453 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: 267 m²/s²
0-3 km storm-relative helicity: 298 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.2

Open this sounding in Storm Lab

The text

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

749 
WUUS54 KBMX 230756
SVRBMX
ALC107-125-230845-
/O.NEW.KBMX.SV.W.0007.120123T0756Z-120123T0845Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
156 AM CST MON JAN 23 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  PICKENS COUNTY IN WEST CENTRAL ALABAMA...
  NORTHERN TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 245 AM CST

* AT 152 AM CST...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60
  MPH.  THIS STORM WAS LOCATED NEAR PICKENSVILLE...AND MOVING EAST AT
  55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  CARROLLTON...REFORM...GORDO...LAKE LURLEEN STATE PARK...LAKE
  TUSCALOOSA BINION CREEK LANDING...SAMANTHA...BANKHEAD LOCK AND DAM
  AND DILLBURG.

WINDS OF 60 TO 70 MPH WILL BREAK LARGE TREE LIMBS AND CAUSE SOME
DAMAGE...ESPECIALLY TO SMALLER STRUCTURES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

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

THIS IS A SUPERCELL THUNDERSTORM. DUE TO THE ROTATING NATURE OF THESE
STORMS...THEY ARE CAPABLE OF PRODUCING ALL TYPES OF SEVERE WEATHER...
INCLUDING EXTREMELY LARGE HAIL...DESTRUCTIVE STRAIGHT LINE WINDS AND
POSSIBLY TORNADOES. MOVE QUICKLY TO A SAFE SHELTER...PREFERABLY INTO
AN INTERIOR ROOM...SUCH AS A BATHROOM OR A CLOSET...OR INTO A
BASEMENT.

&&

A TORNADO WATCH REMAINS IN EFFECT UNTIL 600 AM CST MONDAY MORNING FOR
NORTHWESTERN ALABAMA.

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

LAT...LON 3338 8829 3353 8781 3352 8767 3357 8767
      3361 8754 3360 8742 3341 8733 3306 8832
TIME...MOT...LOC 0756Z 248DEG 46KT 3327 8816

$$

17/KLAWS

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 23, 12:22 AM CST	Severe Thunderstorm Warning	BMX	Marion	23 min
Jan 23, 1:19 AM CST	Severe Thunderstorm Warning	BMX	Marion	41 min
Jan 23, 2:09 AM CST	Tornado Warning	BMX	Pickens	36 min
Jan 23, 2:23 AM CST	Tornado Warning	BMX	Greene, Sumter	52 min
Jan 23, 2:31 AM CST	Tornado Warning	BMX	Tuscaloosa	44 min
Jan 23, 3:02 AM CST	Tornado Warning	BMX	Jefferson, Tuscaloosa, Walker	43 min
Jan 23, 3:04 AM CST	Tornado Warning	BMX	Greene, Sumter	41 min
Jan 23, 3:32 AM CST	Tornado Warning	BMX	Blount, Jefferson, St. Clair	58 min
Jan 23, 3:33 AM CST	Tornado Warning	BMX	Bibb, Greene, Hale, Perry	42 min
Jan 23, 3:50 AM CST	Areal Flood Advisory	BMX	Jefferson, Tuscaloosa, Walker	115 min
Jan 23, 4:15 AM CST	Tornado Warning Emergency	BMX	Blount, Calhoun, Etowah, Jefferson, St. Clair	60 min
Jan 23, 4:27 AM CST	Tornado Warning	BMX	Bibb, Chilton, Dallas, Hale, Perry	48 min
Jan 23, 5:11 AM CST	Tornado Warning Emergency	BMX	Chilton, Coosa	34 min
Jan 23, 5:24 AM CST	Tornado Warning	BMX	Clay, Shelby, Talladega	26 min
Jan 23, 5:37 AM CST	Tornado Warning	BMX	Chilton, Coosa, Talladega	38 min
Jan 23, 6:01 AM CST	Tornado Warning	BMX	Clay, Coosa, Tallapoosa	44 min
Jan 23, 6:22 AM CST	Areal Flood Advisory	BMX	Chilton, Coosa	3 hr
Jan 23, 6:34 AM CST	Areal Flood Advisory	BMX	Dallas, Perry	116 min
Jan 23, 6:36 AM CST	Tornado Warning	BMX	Autauga, Chilton, Coosa, Elmore	39 min
Jan 23, 7:12 AM CST	Severe Thunderstorm Warning	BMX	Coosa, Elmore, Tallapoosa	48 min
Jan 23, 7:15 AM CST	Tornado Warning	BMX	Chambers, Randolph, Tallapoosa	17 min
Jan 23, 7:24 AM CST	Areal Flood Advisory	BMX	Talladega	111 min
Jan 23, 7:32 AM CST	Areal Flood Advisory	BMX	Chambers, Clay, Randolph, Tallapoosa	3 hr
Jan 23, 7:42 AM CST	Tornado Warning	BMX	Chambers, Tallapoosa	33 min
Jan 23, 8:09 AM CST	Severe Thunderstorm Warning	BMX	Elmore, Tallapoosa	36 min
Jan 23, 8:14 AM CST	Areal Flood Advisory	BMX	Autauga, Dallas, Lowndes	3 hr
Jan 23, 8:20 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	25 min
Jan 23, 8:34 AM CST	Severe Thunderstorm Warning	BMX	Elmore, Lee, Macon, Tallapoosa	41 min
Jan 23, 8:38 AM CST	Flash Flood Warning	BMX	Chambers, Randolph	4 hr
Jan 23, 8:44 AM CST	Severe Thunderstorm Warning	BMX	Montgomery	31 min
Jan 23, 8:45 AM CST	Areal Flood Advisory	BMX	Chambers, Lee, Macon, Tallapoosa	3 hr
Jan 23, 9:09 AM CST	Severe Thunderstorm Warning	BMX	Bullock, Elmore, Macon, Montgomery	36 min
Jan 23, 9:12 AM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	48 min
Jan 23, 9:19 AM CST	Severe Thunderstorm Warning	BMX	Lee, Macon, Russell	41 min
Jan 23, 10:20 AM CST	Areal Flood Warning	BMX	Clay, Tallapoosa	4 hr
Jan 23, 10:32 AM CST	Severe Thunderstorm Warning	BMX	Lee, Russell	28 min
Jan 23, 12:12 PM CST	River Flood Warning	BMX	Chambers, Elmore, Macon, Randolph, Tallapoosa	2 hr

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.