Alert archive / Alabama / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 91, NWS Birmingham, AL
NWS Birmingham, AL issued this severe thunderstorm warning at Mar 31, 2012, 8:59 PM CDT for Bibb County, Jefferson County, Tuscaloosa County, Alabama. It was in force for 46 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
- Mar 31, 2012, 8:59 PM CDT (01:59 UTC)
- Expired
- Mar 31, 2012, 9:45 PM CDT
- In force
- 46 min
- Issued by
- NWS Birmingham, AL
- Area
- Storm-based polygon
Counties Bibb County, AL, Jefferson County, AL, Tuscaloosa County, AL
The radar
The Birmingham radar (KBMX), 41 km from the middle of the area, began a volume at 02:00 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, 9:05 PM CDT | HAIL 1.25 | Nw Bull City, AL | HALF DOLLAR SIZE HAIL IN BULL CITY ON GROUNDHOG RD. |
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, 2.0 hours before the alert went out and 40 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
- 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
The text
As transmitted, in the capitals the NWS used until 2016.
543 WUUS54 KBMX 010159 SVRBMX ALC007-073-125-010245- /O.NEW.KBMX.SV.W.0091.120401T0159Z-120401T0245Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE BIRMINGHAM AL 859 PM CDT SAT MAR 31 2012 THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL BIBB COUNTY IN ALABAMA... SOUTHWESTERN JEFFERSON COUNTY IN ALABAMA... EAST CENTRAL TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA... * UNTIL 945 PM CDT * AT 856 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 BULL CITY...OR 15 MILES WEST OF HUEYTOWN...AND MOVING SOUTH AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... ABERNANT...LAKE VIEW...BROOKWOOD...WOODSTOCK JUNCTION...BEVILLE LOCK AND DAM...VANCE...COALING AND WEST BLOCTON. THIS INCLUDES... INTERSTATE 20 EXIT NUMBERS 86 THROUGH 97... 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 3314 8705 3313 8738 3348 8731 3347 8717 TIME...MOT...LOC 0159Z 358DEG 22KT 3340 8726 $$ GRANTHAM
2 follow-up statements
211 WWUS54 KBMX 010214 SVSBMX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 914 PM CDT SAT MAR 31 2012 ALC007-073-125-010245- /O.CON.KBMX.SV.W.0091.000000T0000Z-120401T0245Z/ BIBB AL-JEFFERSON AL-TUSCALOOSA AL- 914 PM CDT SAT MAR 31 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL TUSCALOOSA...SOUTHWESTERN JEFFERSON AND NORTH CENTRAL BIBB COUNTIES UNTIL 945 PM CDT... AT 909 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR ABERNANT...OR 16 MILES NORTHEAST OF HOLT...MOVING SOUTH AT 25 MPH. LOCATIONS IMPACTED INCLUDE... ABERNANT...LAKE VIEW...BROOKWOOD...WOODSTOCK JUNCTION...BEVILLE LOCK AND DAM...VANCE...COALING...WEST BLOCTON...EAST BROOKWOOD AND CAFFEE JUNCTION. THIS INCLUDES... INTERSTATE 20 EXIT NUMBERS 86 THROUGH 97... TO REPORT SEVERE WEATHER...CALL 1-800-856-0758. LAT...LON 3314 8705 3313 8738 3339 8731 3340 8717 TIME...MOT...LOC 0214Z 358DEG 22KT 3331 8726 $$ GRANTHAM
649
WWUS54 KBMX 010222
SVSBMX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
922 PM CDT SAT MAR 31 2012
ALC073-010232-
/O.CAN.KBMX.SV.W.0091.000000T0000Z-120401T0245Z/
JEFFERSON AL-
922 PM CDT SAT MAR 31 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN JEFFERSON 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 3337 8730 3334 8718 3332 8718 3332 8717
3330 8715 3314 8705 3313 8738
TIME...MOT...LOC 0222Z 358DEG 22KT 3326 8726
$$
ALC007-125-010245-
/O.CON.KBMX.SV.W.0091.000000T0000Z-120401T0245Z/
BIBB AL-TUSCALOOSA AL-
922 PM CDT SAT MAR 31 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL
TUSCALOOSA AND NORTH CENTRAL BIBB COUNTIES UNTIL 945 PM CDT...
AT 919 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
ABERNANT...OR 14 MILES EAST OF HOLT...MOVING SOUTH AT 25 MPH.
LOCATIONS IMPACTED INCLUDE...
BROOKWOOD...WOODSTOCK JUNCTION...BEVILLE LOCK AND DAM...VANCE...
COALING...WEST BLOCTON...CAFFEE JUNCTION...GREEN POND...I 20 REST
AREA NEAR TUSCALOOSA AND CEDAR COVE.
THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 86 THROUGH 97...
TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.
LAT...LON 3337 8730 3334 8718 3332 8718 3332 8717
3330 8715 3314 8705 3313 8738
TIME...MOT...LOC 0222Z 358DEG 22KT 3326 8726
$$
GRANTHAMThe 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, 8:28 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Walker, Winston | 47 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, 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, 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; radar from the NEXRAD Level II archive.