Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 4, NWS Birmingham, AL

January 21, 2012Barbour County, Bullock County, Russell County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jan 21, 2012, 2:23 PM CST for Barbour County, Bullock County, Russell County, Alabama. It was in force for 37 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 21, 2012, 2:23 PM CST (20:23 UTC)
Expired: Jan 21, 2012, 3:00 PM CST
In force: 37 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Barbour County, AL, Bullock County, AL, Russell County, AL

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 21, 11:28 AM CST	Tornado Watch	SPC	8 hr

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 8.4 hours before the alert went out and 147 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: 238 J/kg
Mixed-layer CIN: -3 J/kg
Mixed-layer LCL: 505 m above ground
0-6 km bulk shear: 45 kt
0-1 km storm-relative helicity: 265 m²/s²
0-3 km storm-relative helicity: 291 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 2.4

Open this sounding in Storm Lab

The text

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

679 
WUUS54 KBMX 212023
SVRBMX
ALC005-011-113-212100-
/O.NEW.KBMX.SV.W.0004.120121T2023Z-120121T2100Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
223 PM CST SAT JAN 21 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHEASTERN BARBOUR COUNTY IN SOUTHEAST ALABAMA...
  NORTHEASTERN BULLOCK COUNTY IN SOUTHEAST ALABAMA...
  SOUTHERN RUSSELL COUNTY IN SOUTHEAST ALABAMA...

* UNTIL 300 PM CST

* AT 222 PM CST...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 6 MILES
  SOUTHWEST OF GUERRYTON...OR 6 MILES NORTHWEST OF MIDWAY...AND
  MOVING EAST AT 30 MPH.

* LOCATIONS IMPACTED INCLUDE...
  MIDWAY...HURTSBORO...GUERRYTON...SPRING HILL...RUTHERFORD AND TWIN
  SPRINGS.

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 700 PM CST SATURDAY EVENING
FOR SOUTHEASTERN ALABAMA.

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

LAT...LON 3226 8489 3221 8495 3222 8497 3220 8496
      3218 8501 3213 8505 3209 8504 3204 8506
      3208 8563 3219 8564 3223 8564 3224 8544
      3225 8543
TIME...MOT...LOC 2022Z 270DEG 28KT 3216 8553

$$

73

1 follow-up statement

244 
WWUS54 KBMX 212041
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
241 PM CST SAT JAN 21 2012

ALC011-212050-
/O.CAN.KBMX.SV.W.0004.000000T0000Z-120121T2100Z/
BULLOCK AL-
241 PM CST SAT JAN 21 2012

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN BULLOCK 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 3213 8505 3209 8504 3204 8506 3207 8543
      3214 8543 3214 8541 3215 8543 3225 8543
      3226 8490 3222 8494 3221 8494 3222 8496
      3222 8497 3221 8497 3220 8497 3218 8501
TIME...MOT...LOC 2040Z 270DEG 28KT 3216 8536

$$

ALC005-113-212100-
/O.CON.KBMX.SV.W.0004.000000T0000Z-120121T2100Z/
BARBOUR AL-RUSSELL AL-
241 PM CST SAT JAN 21 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHERN
RUSSELL AND NORTHEASTERN BARBOUR COUNTIES UNTIL 300 PM CST...

AT 240 PM CST...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 6 MILES
SOUTH OF HURTSBORO...MOVING EAST AT 30 MPH.

LOCATIONS IMPACTED INCLUDE...
  SPRING HILL...RUTHERFORD AND TWIN SPRINGS.

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.

SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR
YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR
HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE
INTO AREAS WHERE WATER COVERS THE ROAD.

&&

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

LAT...LON 3213 8505 3209 8504 3204 8506 3207 8543
      3214 8543 3214 8541 3215 8543 3225 8543
      3226 8490 3222 8494 3221 8494 3222 8496
      3222 8497 3221 8497 3220 8497 3218 8501
TIME...MOT...LOC 2040Z 270DEG 28KT 3216 8536

$$

73

The office that day

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

Issued	Product	Office	Counties	Lasted
Jan 21, 4:42 AM CST	Special Weather Statement	BMX	Marion	48 min
Jan 21, 5:08 AM CST	Special Weather Statement	BMX	Cleburne	52 min
Jan 21, 5:18 AM CST	Areal Flood Advisory	BMX	Calhoun, Cleburne, Talladega	117 min
Jan 21, 5:21 AM CST	Special Weather Statement	BMX	Marion, Winston	39 min
Jan 21, 6:03 AM CST	Special Weather Statement	BMX	Fayette, Lamar, Marion, Winston	42 min
Jan 21, 6:47 AM CST	Special Weather Statement	BMX	Fayette, Lamar, Walker, Winston	43 min
Jan 21, 7:26 AM CST	Special Weather Statement	BMX	Fayette, Pickens, Walker	34 min
Jan 21, 8:04 AM CST	Special Weather Statement	BMX	Pickens	41 min
Jan 21, 8:37 AM CST	Areal Flood Advisory	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	113 min
Jan 21, 8:58 AM CST	Special Weather Statement	BMX	Shelby	32 min
Jan 21, 9:28 AM CST	Special Weather Statement	BMX	Clay, Talladega	32 min
Jan 21, 9:53 AM CST	Special Weather Statement	BMX	Tallapoosa	37 min
Jan 21, 10:09 AM CST	Severe Thunderstorm Warning	BMX	Chambers, Clay, Randolph, Tallapoosa	36 min
Jan 21, 10:16 AM CST	Areal Flood Advisory	BMX	Clay, Talladega	119 min
Jan 21, 10:27 AM CST	Areal Flood Advisory	BMX	Randolph	2 hr
Jan 21, 11:17 AM CST	Areal Flood Advisory	BMX	Chambers	118 min
Jan 21, 11:47 AM CST	Special Weather Statement	BMX	Perry	43 min
Jan 21, 12:55 PM CST	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	50 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; the sounding from the Mesonet's radiosonde archive.