Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 2, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Jan 21, 2012, 10:09 AM CST for 4 counties in Alabama. It was in force for 36 min. 1 report 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 21, 2012, 10:09 AM CST (16:09 UTC)
- Expired
- Jan 21, 2012, 10:45 AM CST
- In force
- 36 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Chambers County, AL, Clay County, AL, Randolph County, AL, Tallapoosa County, AL
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Jan 21, 10:30 AM CST | TSTM WND DMG | 5 W Roanoke, AL | LARGE TREES REPORTED DOWN ACROSS HIGHWAY 22 IN THE COMMUNITY OF DICKERT. NUMEROUS POWERLINES REPORTED DOWN IN THE AREA AS WELL. |
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 21, 4:55 AM CST | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 4.2 hours before the alert went out and 102 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.
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
468
WUUS54 KBMX 211609
SVRBMX
ALC017-027-111-123-211645-
/O.NEW.KBMX.SV.W.0002.120121T1609Z-120121T1645Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1009 AM CST SAT JAN 21 2012
THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
CHAMBERS COUNTY IN EAST CENTRAL ALABAMA...
SOUTHEASTERN CLAY COUNTY IN EAST CENTRAL ALABAMA...
SOUTHERN RANDOLPH COUNTY IN EAST CENTRAL ALABAMA...
NORTHERN TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...
* UNTIL 1045 AM CST
* AT 1004 AM CST...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
OF 60 MPH. THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM 5
MILES SOUTHEAST OF LINEVILLE TO GOLDVILLE TO KELLYTON...AND MOVING
SOUTHEAST AT 45 MPH.
* LOCATIONS IMPACTED INCLUDE...
ROANOKE...LAFAYETTE...STROUD...LANETT...HILLABEE CREEK...MALONE...
CORINTH AND SPARKLING SPRINGS.
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.
&&
A TORNADO WATCH REMAINS IN EFFECT UNTIL NOON CST SATURDAY FOR
ALABAMA.
TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.
LAT...LON 3285 8515 3273 8536 3274 8543 3273 8544
3273 8547 3301 8601 3303 8601 3314 8576
3333 8571 3320 8525 3305 8521 3286 8518
TIME...MOT...LOC 1609Z 306DEG 39KT 3322 8566 3308 8567
3297 8593
$$2 follow-up statements
409
WWUS54 KBMX 211633
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1033 AM CST SAT JAN 21 2012
ALC027-211643-
/O.CAN.KBMX.SV.W.0002.000000T0000Z-120121T1645Z/
CLAY AL-
1033 AM CST SAT JAN 21 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN CLAY COUNTY IS
CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3273 8536 3274 8543 3273 8544 3273 8547
3298 8572 3311 8567 3311 8565 3314 8565
3325 8546 3320 8525 3305 8521 3286 8518
3285 8515
TIME...MOT...LOC 1633Z 306DEG 39KT 3307 8541 3293 8542
3282 8568
$$
ALC017-111-123-211645-
/O.CON.KBMX.SV.W.0002.000000T0000Z-120121T1645Z/
RANDOLPH AL-TALLAPOOSA AL-CHAMBERS AL-
1033 AM CST SAT JAN 21 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CHAMBERS...
NORTHEASTERN TALLAPOOSA AND SOUTHERN RANDOLPH COUNTIES UNTIL 1045 AM
CST...
AT 1028 AM CST...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DESTRUCTIVE WINDS
IN EXCESS OF 65 MPH. THESE STORMS WERE LOCATED ALONG A LINE
EXTENDING FROM RED LEVEL TO PENTON TO DADEVILLE...MOVING SOUTHEAST AT
45 MPH.
LOCATIONS IMPACTED INCLUDE...
LAFAYETTE...STROUD...LANETT...WELCH...WEST CHAMBERS...POST OAK
FORKS...KELLAM HILL...STURKIE...DENSON AND CHAMBERS COUNTY LAKE.
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 3273 8536 3274 8543 3273 8544 3273 8547
3298 8572 3311 8567 3311 8565 3314 8565
3325 8546 3320 8525 3305 8521 3286 8518
3285 8515
TIME...MOT...LOC 1633Z 306DEG 39KT 3307 8541 3293 8542
3282 8568
$$856
WWUS54 KBMX 211646
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1046 AM CST SAT JAN 21 2012
ALC017-111-123-211655-
/O.EXP.KBMX.SV.W.0002.000000T0000Z-120121T1645Z/
RANDOLPH AL-TALLAPOOSA AL-CHAMBERS AL-
1046 AM CST SAT JAN 21 2012
...THE SEVERE THUNDERSTORM WARNING FOR CHAMBERS...NORTHEASTERN
TALLAPOOSA AND SOUTHERN RANDOLPH COUNTIES HAS EXPIRED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY. HOWEVER GUSTY WINDS AND HEAVY RAIN ARE STILL POSSIBLE WITH
THESE THUNDERSTORMS.
IN ADDITION...STRONG THUNDERSTORMS MAY REDEVELOP...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL NOON.
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3273 8536 3274 8543 3273 8544 3273 8547
3298 8572 3311 8567 3311 8565 3314 8565
3325 8546 3320 8525 3305 8521 3286 8518
3285 8515
TIME...MOT...LOC 1633Z 275DEG 36KT 3315 8539 3300 8540
3290 8566
$$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, 10:16 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 |
| Jan 21, 2:23 PM CST | Severe Thunderstorm Warning | BMX | Barbour, Bullock, Russell | 37 min |
Nearby
Severe Thunderstorm Warnings in Alabama, 2012Every 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.