Alert archive / Alabama / Special Weather Statements in 2012
Special Weather Statement, NWS Birmingham, AL
NWS Birmingham, AL issued this special weather statement at May 21, 2012, 8:55 PM CDT for Marion County, Alabama. It was in force for 50 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
- May 21, 2012, 8:55 PM CDT (01:55 UTC)
- Expired
- May 21, 2012, 9:45 PM CDT
- In force
- 50 min
- Issued by
- NWS Birmingham, AL
County Marion County, AL
The radar
The Columbus AFB radar (KGWX), 38 km from the middle of the area, began a volume at 01:58 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 nearest sounding before it
Birmingham, AL (KBMX), launched 00:00Z, 1.9 hours before the alert went out and 168 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
- 174 J/kg
- Mixed-layer CIN
- -24 J/kg
- Mixed-layer LCL
- 1734 m above ground
- 0-6 km bulk shear
- 9 kt
- 0-1 km storm-relative helicity
- -8 m²/s²
- 0-3 km storm-relative helicity
- 12 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
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</html>What forecasters said that day
The local office's own words before this special weather statement went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Birmingham, AL wrote its last area forecast discussion before this special weather statement went out at May 21, 6:42 PM CDT, 2 hours 13 minutes earlier.
Area forecast discussion, May 21, 6:42 PM CDT, 2 hours 13 minutes before
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</html>Hazardous weather outlook, May 21, 8:34 PM CDT, 21 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE BIRMINGHAM AL 834 PM CDT MON MAY 21 2012 ALZ011>015-017>050-230145- AUTAUGA-BARBOUR-BIBB-BLOUNT-BULLOCK-CALHOUN-CHAMBERS-CHEROKEE- CHILTON-CLAY-CLEBURNE-COOSA-DALLAS-ELMORE-ETOWAH-FAYETTE-GREENE-HALE- JEFFERSON-LAMAR-LEE-LOWNDES-MACON-MARENGO-MARION-MONTGOMERY-PERRY- PICKENS-PIKE-RANDOLPH-RUSSELL-SHELBY-ST CLAIR-SUMTER-TALLADEGA- TALLAPOOSA-TUSCALOOSA-WALKER-WINSTON- 834 PM CDT MON MAY 21 2012 THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM. .DAY ONE...TONIGHT. THOUGH ONE OR TWO STRONG THUNDERSTORMS COULD BECOME SEVERE PRIOR TO MIDNIGHT...THE PROBABILITY OF WIDESPREAD HAZARDOUS WEATHER IS LOW AT THIS TIME. THE AREA OF FOCUS WILL BE NORTH OF INTERSTATE 20 AND THE THREATS OF ANY STORM THAT DOES BECOME SEVERE WILL INCLUDE LARGE HAIL AND GUSTY WINDS. .DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY. NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME. .SPOTTER INFORMATION STATEMENT... ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT EXPECTED AT THIS TIME. 27
In the hours before
Special weather statement, May 21, 5:31 PM CDT, 3 hours 24 minutes before
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</html>Special weather statement, May 21, 5:42 PM CDT, 3 hours 13 minutes before
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</html>Special weather statement, May 21, 5:52 PM CDT, 3 hours 3 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE BIRMINGHAM AL 552 PM CDT MON MAY 21 2012 ALZ035-040-041-212330- AUTAUGA AL-CHILTON AL-DALLAS AL- 552 PM CDT MON MAY 21 2012 ...SIGNIFICANT WEATHER ADVISORY FOR WESTERN AUTAUGA...NORTHEASTERN DALLAS AND SOUTHWESTERN CHILTON COUNTIES UNTIL 630 PM CDT... AT 549 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG THUNDERSTORM NEAR PARNELL...OR 12 MILES NORTHEAST OF VALLEY GRANDE... MOVING SOUTH AT 15 MPH. HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING. LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE... BURNSVILLE... MULBERRY... VALLEY CREEK JUNCTION... DAWSON MILL... TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED ROADWAY. && LAT...LON 3249 8667 3242 8693 3271 8702 3277 8681 TIME...MOT...LOC 2252Z 341DEG 12KT 3266 8688 MA
Local storm report, May 21, 6:34 PM CDT, 2 hours 21 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
634 PM CDT MON MAY 21 2012
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0545 PM TSTM WND DMG 1 S SAND ROCK 34.23N 85.77W
05/21/2012 CHEROKEE AL EMERGENCY MNGR
TREE LIMBS /NOT FULL TREES/ WERE KNOCKED DOWN ONTO POWER
LINES CAUSING POWER OUTAGES. DIME SIZED HAIL WAS ALSO
REPORTED AT THE INTERSECTION OF CR 68 AND CR 36.
&&
SUNGERSpecial weather statement, May 21, 6:36 PM CDT, 2 hours 19 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
636 PM CDT MON MAY 21 2012
ALZ018-220000-
ETOWAH AL-
636 PM CDT MON MAY 21 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ETOWAH COUNTY UNTIL
700 PM CDT...
AT 635 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 6 MILES NORTHWEST OF ANDERSON...OR 10 MILES NORTH OF
GADSDEN...MOVING SOUTHEAST AT 20 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.
LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
HOKES BLUFF...
TABOR ROAD...
ANDERSON...
BALLPLAY...
BLACK CREEK...
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.
&&
LAT...LON 3420 8585 3411 8584 3413 8581 3412 8579
3409 8580 3400 8574 3394 8574 3395 8581
3410 8605 3419 8598
TIME...MOT...LOC 2336Z 299DEG 15KT 3414 8596
MASpecial weather statement, May 21, 8:55 PM CDT, 0 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
855 PM CDT MON MAY 21 2012
ALZ011-220245-
MARION AL-
855 PM CDT MON MAY 21 2012
...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN MARION COUNTY UNTIL
945 PM CDT...
AT 853 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR TREMONT...OR 8 MILES SOUTHEAST OF FULTON...MOVING
SOUTHEAST AT 10 MPH.
HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THIS STORM...ALONG WITH HEAVY RAIN AND FREQUENT
DANGEROUS LIGHTNING.
LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
HAMILTON...
WESTON...
SHOTTSVILLE...
BEXAR...
BYRD...
TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.
&&
LAT...LON 3422 8819 3430 8819 3431 8818 3423 8786
3405 8806 3406 8821
TIME...MOT...LOC 0155Z 318DEG 9KT 3421 8826
MAThe office that day
Everything else NWS Birmingham, AL issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 9:42 PM CDT | Special Weather Statement | BMX | Marion | 48 min |
| May 21, 10:26 PM CDT | Special Weather Statement | BMX | Lamar, Marion | 49 min |
| May 21, 10:45 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Lamar | 30 min |
| May 21, 11:11 PM CDT | Special Weather Statement | BMX | Fayette, Lamar, Pickens | 49 min |
| May 21, 11:15 PM CDT | Special Weather Statement | BMX | Walker | 45 min |
| May 21, 11:17 PM CDT | Severe Thunderstorm Warning | BMX | Fayette, Tuscaloosa | 28 min |
| May 21, 11:39 PM CDT | Severe Thunderstorm Warning | BMX | Tuscaloosa | 36 min |
| May 21, 11:52 PM CDT | Special Weather Statement | BMX | Pickens, Tuscaloosa | 38 min |
| May 22, 12:10 AM CDT | Special Weather Statement | BMX | Walker | 50 min |
| May 22, 12:14 AM CDT | Severe Thunderstorm Warning | BMX | Jefferson, Tuscaloosa, Walker | 46 min |
| May 22, 12:24 AM CDT | Special Weather Statement | BMX | Pickens | 66 min |
| May 22, 12:40 AM CDT | Severe Thunderstorm Warning | BMX | Jefferson | 40 min |
| May 22, 12:52 AM CDT | Special Weather Statement | BMX | Tuscaloosa | 38 min |
| May 22, 1:07 AM CDT | Severe Thunderstorm Warning | BMX | Greene, Tuscaloosa | 26 min |
| May 22, 1:13 AM CDT | Special Weather Statement | BMX | Shelby | 47 min |
| May 22, 1:32 AM CDT | Special Weather Statement | BMX | Hale | 43 min |
| May 22, 1:45 AM CDT | Special Weather Statement | BMX | Chilton | 45 min |
| May 22, 1:59 AM CDT | Special Weather Statement | BMX | Perry | 31 min |
| May 22, 2:39 AM CDT | Special Weather Statement | BMX | Dallas | 51 min |
| May 22, 5:41 AM CDT | Special Weather Statement | BMX | Barbour | 49 min |
Nearby
Special Weather Statements in Alabama, 2012Every special weather statement 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.