Alert archive / Alabama / Tornado Warnings in 2012

Tornado Warning 7, NWS Birmingham, AL

January 23, 20124 counties in Alabama

NWS Birmingham, AL issued this tornado warning at Jan 23, 2012, 3:33 AM CST for 4 counties in Alabama. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jan 23, 2012, 3:33 AM CST (09:33 UTC)
Expired: Jan 23, 2012, 4:15 AM CST
In force: 42 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Bibb County, AL, Greene County, AL, Hale County, AL, Perry County, AL

The radar

The Birmingham radar (KBMX), 79 km from the middle of the area, began a volume at 09:35 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.

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
Jan 23, 2:44 AM CST	Tornado Watch	SPC	9 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.6 hours before the alert went out and 79 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.

176 
WFUS54 KBMX 230933
TORBMX
ALC007-063-065-105-231015-
/O.NEW.KBMX.TO.W.0007.120123T0933Z-120123T1015Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
333 AM CST MON JAN 23 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* TORNADO WARNING FOR...
  WESTERN BIBB COUNTY IN ALABAMA...
  SOUTHEASTERN GREENE COUNTY IN WEST CENTRAL ALABAMA...
  HALE COUNTY IN WEST CENTRAL ALABAMA...
  NORTHERN PERRY COUNTY IN ALABAMA...

* UNTIL 415 AM CST

* AT 331 AM CST...LOCAL LAW ENFORCEMENT REPORTED A POSSIBLE TORNADO 
NEAR TISHABEE...OR 12 MILES EAST OF LIVINGSTON. DOPPLER RADAR SHOWED 
THIS THUNDERSTORM MOVING EAST AT 55 MPH.

* LOCATIONS IMPACTED INCLUDE...
  GREENSBORO...MARION...BRENT...CENTREVILLE...THORNHILL...FORKLAND...
  WALDEN QUARTERS...DUFFYS BEND...WEDGEWORTH AND EVANSVILLE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

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

LAT...LON 3301 8738 3300 8732 3303 8731 3313 8706
      3284 8699 3283 8702 3272 8702 3262 8704
      3257 8788 3260 8790 3261 8787 3259 8786
      3261 8784 3262 8791 3277 8798
TIME...MOT...LOC 0932Z 258DEG 48KT 3265 8798

$$

17

1 follow-up statement

688 
WWUS54 KBMX 230956
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
356 AM CST MON JAN 23 2012

ALC063-231005-
/O.CAN.KBMX.TO.W.0007.000000T0000Z-120123T1015Z/
GREENE AL-
356 AM CST MON JAN 23 2012

...THE TORNADO WARNING FOR SOUTHEASTERN GREENE 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 3283 8781 3301 8738 3300 8732 3303 8731
      3313 8706 3284 8699 3283 8702 3262 8705
      3258 8776 3259 8774 3264 8778 3263 8775
      3266 8775 3265 8777 3266 8779 3279 8783
TIME...MOT...LOC 0955Z 258DEG 48KT 3270 8762

$$

ALC007-065-105-231015-
/O.CON.KBMX.TO.W.0007.000000T0000Z-120123T1015Z/
BIBB AL-HALE AL-PERRY AL-
356 AM CST MON JAN 23 2012

...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHERN PERRY...HALE AND
WESTERN BIBB COUNTIES UNTIL 415 AM CST...

AT 354 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO.  THIS DANGEROUS
STORM WAS LOCATED NEAR GREENSBORO MUNICIPAL AIRPORT...OR NEAR
GREENSBORO...MOVING EAST AT 55 MPH.

LOCATIONS IMPACTED INCLUDE...
  GREENSBORO...MARION...BRENT...CENTREVILLE...MERTZ...LOW GAP...
  HARRISBURG...WEST CENTREVILLE...EOLINE AND HARPER HILL.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORNADOES ARE DIFFICULT TO SEE AND CONFIRM AT NIGHT. TAKE COVER NOW.

&&

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

LAT...LON 3283 8781 3301 8738 3300 8732 3303 8731
      3313 8706 3284 8699 3283 8702 3262 8705
      3258 8776 3259 8774 3264 8778 3263 8775
      3266 8775 3265 8777 3266 8779 3279 8783
TIME...MOT...LOC 0955Z 258DEG 48KT 3270 8762

$$

17

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, 1:56 AM CST	Severe Thunderstorm Warning	BMX	Pickens, Tuscaloosa	49 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, 3:50 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

Tornado Warnings in Alabama, 2012 Every tornado warning in 2012 Tornadoes 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.