Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

April 5, 2012Tuscaloosa County, Alabama

NWS Birmingham, AL issued this special weather statement at Apr 5, 2012, 5:36 PM CDT for Tuscaloosa County, Alabama. It was in force for 39 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: Apr 5, 2012, 5:36 PM CDT (22:36 UTC)
Expired: Apr 5, 2012, 6:15 PM CDT
In force: 39 min
Issued by: NWS Birmingham, AL

County Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 58 km from the middle of the area, began a volume at 22:37 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 12:00Z, 10.6 hours before the alert went out and 57 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: 315 J/kg
Mixed-layer CIN: -31 J/kg
Mixed-layer LCL: 754 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -91 m²/s²
0-3 km storm-relative helicity: -43 m²/s²
Significant tornado parameter: 0.0
Supercell composite: -1.5

Open this sounding in Storm Lab

The text

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

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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 Apr 5, 1:00 PM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, Apr 5, 1:00 PM CDT, 4 hours 36 minutes before

AREA FORECAST DISCUSSION...UPDATED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
100 PM CDT THU APR 5 2012

.UPDATE...
FOR AVIATION AND FORECAST UPDATE.

&&

.DISCUSSION...

UPDATING FORECAST TO REMOVE A FEW MORE WARNINGS FROM
WATCH...BIBB...PERRY AND MARENGO. OUT SHORTLY.

&&

.AVIATION...
18Z TAF DISCUSSION.

MAIN UPDATES FOR THIS PACKAGE WILL BE CONTINUED TIMING WITH LINE
OF TSRA THAT IS MOVING ACROSS I65 CORRIDOR EASTWARD AS WE SPEAK.
SOUTHERN PARTS OF THE LINE/IE...MGM/TOI COULD SEE SMALL HAIL IF
STORM HOLD TOGETHER THIS AFTERNOON...BUT THIS LINE HAS DECREASED
SOME IN OVERALL INTENSITY AS IT HAS MOVED EWD. SOME GUSTY WINDS
ARE POSSIBLE BUT HAIL HAS BEEN THE MAIN STORY TODAY WITH STORMS.
THERE IS STILL THE POSSIBILITY OF A SECOND ROUND OF STRONG STORMS
WITH THE PASSAGE OF THE UPPER LOW LATE THIS AFTERNOON INTO THIS
EVENING...BUT AT THIS TIME THE PROBABILITY AT ONE SITE IS LOW SO
WILL NOT ADD INTO TAFS AT THIS TIME BUT IT WOULD MOSTLY LIKELY
AFFECT NORTHERN TAFS IF ANY AS THEY WILL BE CLOSER TO THE LOW.

08/MNK

&&

.PREV DISCUSSION... /ISSUED 1227 PM CDT THU APR 5 2012/

DISCUSSION...

MCS/SQUALL LINE CONTINUES TO MOVE ACROSS CENTRAL ALABAMA AND
SHOULD BE NEAR THE GEORGIA STATE LINE BETWEEN 3 TO 4 PM. SURFACE
HEATING AHEAD OF THE LINE SHOULD ALLOW IT STORMS TO CONTINUE TO BE
STRONG TO SEVERE AT TIMES. REMOVED SEVERAL COUNTIES FROM THE
WESTERN PART OF THE WATCH AS THE THREAT FOR THE NEXT FEW HOURS HAS
ENDED. ADDED COUNTIES IN THE EAST AS THE LINE IS EXPECTED TO
MAINTAIN INTENSITY ACROSS THE STATE.

ADDITIONAL DEVELOPMENT IS CURRENTLY TAKING PLACE NEAR THE UPPER
LOW IN NORTHWEST MISSISSIPPI ALONG THE COLD FRONT. MID LEVEL DRY
SLOT AND CLEARING IS WORKING IN TO THE WESTERN PART OF ALABAMA AND
WILL ALLOW FOR SURFACE HEATING IN THE WAKE OF THE MCS. EXPECT
ISOLATED STRONG TO SEVERE THUNDERSTORMS TO AFFECT THE NORTHWEST
PART OF THE AREA LATE THIS AFTERNOON AND SPREAD SOUTHEASTWARD
ACROSS THE FORECAST AREA IN ASSOCIATION WITH THE COLD CORE UPPER
LOW. HAIL WILL BE THE PRIMARY THREAT WITH THESE STORMS AS 500 MB
TEMPS OF -17 TO -19 C MOVE OVER THE NORTHERN HALF OF THE STATE.
THESE STORMS MAY LAST UNTIL A FEW HOURS AFTER SUNSET BEFORE
WEAKENING.

DID NOT UPDATE MUCH OF THE FORECAST BEYOND THE TONIGHT PERIOD DUE
TO ONGOING WEATHER. A GLANCE AT THE 12Z GFS SHOWS NO MAJOR CHANGES
ARE NECESSARY FOR THE EXTENDED AS COOLER AND DRIER NORTHWEST FLOW
CONTINUES INTO NEXT WEEK.

GRANTHAM/87

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     50  71  46  74  48 /  40  10   0   0   0
ANNISTON    52  72  47  74  49 /  40  10   0   0   0
BIRMINGHAM  49  73  49  74  51 /  40  10   0   0   0
TUSCALOOSA  51  74  49  76  50 /  30   0   0   0   0
CALERA      50  71  51  75  51 /  40  10   0   0   0
AUBURN      55  71  48  73  47 /  40  10   0   0   0
MONTGOMERY  54  76  51  76  50 /  30  10   0   0   0
TROY        55  75  50  74  48 /  30  10   0   0   0

&&

.BMX WATCHES/WARNINGS/ADVISORIES...
NONE.

&&

08/87

Hazardous weather outlook, Apr 5, 4:08 PM CDT, 1 hour 28 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
408 PM CDT THU APR 5 2012

ALZ011>015-017>050-062100-
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-
408 PM CDT THU APR 5 2012

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE COUNTIES SERVED BY THE
NATIONAL WEATHER SERVICE OFFICE IN BIRMINGHAM.

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SEVERE STORMS WILL BE POSSIBLE THROUGH MIDNIGHT TONIGHT FOR ALL OF
CENTRAL ALABAMA. THE MAIN THREATS WILL BE LARGE HAIL...ALONG WITH A
SECONDARY THREAT OF DAMAGING WINDS AND LOCALLY HEAVY RAINFALL. THE
THREAT OF TORNADOES CONTINUES TO BE MINIMAL. THE SEVERE WEATHER
THREAT SHOULD COME TO AN END FOR ALL OF CENTRAL ALABAMA BY MIDNIGHT.

.DAYS TWO THROUGH SEVEN...FRIDAY THROUGH WEDNESDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE
NECESSARY THROUGH MIDNIGHT.

08/MNK

In the hours before

Local storm report, Apr 5, 4:45 PM CDT, 51 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
445 PM CDT THU APR 05 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0443 PM     HAIL             6 N HAMILTON            34.23N 87.98W
04/05/2012  E1.50 INCH       MARION             AL   PUBLIC

            PING PONG BALL SIZE HAIL 6 MILES NORTH OF HAMILTON.

&&

GRANTHAM

Special weather statement, Apr 5, 4:52 PM CDT, 44 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
452 PM CDT THU APR 5 2012

ALZ022-052230-
PICKENS AL-
452 PM CDT THU APR 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR PICKENS COUNTY UNTIL 530 PM
CDT...

AT 452 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM MILLPORT TO 7 MILES SOUTH
OF NEW HOPE TO 27 MILES SOUTHWEST OF COLUMBUS...AND MOVING SOUTHEAST
AT 40 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH OUTFLOWS FROM STORMS IN
MISSISSIPPI.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  REFORM...
  PICKENSVILLE...
  CARROLLTON...
  GORDO...
  ALICEVILLE...

&&

LAT...LON 3349 8829 3353 8826 3353 8785 3315 8784
      3311 8794 3308 8797 3306 8803 3304 8805
      3305 8807 3304 8808 3304 8814 3299 8818
      3299 8834
TIME...MOT...LOC 2152Z 304DEG 34KT 3355 8801 3333 8827
          3322 8872

75

Local storm report, Apr 5, 5:15 PM CDT, 21 minutes before

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Special weather statement, Apr 5, 5:24 PM CDT, 12 minutes before

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Local storm report, Apr 5, 5:35 PM CDT, 1 minute before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
535 PM CDT THU APR 05 2012

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0531 PM     HAIL             5 E JASPER              33.87N 87.18W
04/05/2012  E1.00 INCH       WALKER             AL   PUBLIC

            PICTURE SENT IN WITH HAIL COVERING THE GROUND EAST OF
            JASPER.

&&

GRANTHAM

Special weather statement, Apr 5, 5:36 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
536 PM CDT THU APR 5 2012

ALZ023-052315-
TUSCALOOSA AL-
536 PM CDT THU APR 5 2012

...SIGNIFICANT WEATHER ADVISORY FOR TUSCALOOSA COUNTY UNTIL 615 PM
CDT...

AT 536 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM BERRY TO 6 MILES WEST OF
SAMANTHA TO 6 MILES NORTHEAST OF GORDO...AND MOVING EAST AT 45 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH OUTFLOWS
AHEAD OF THE THUNDERSTORMS.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  NORTHPORT...
  TUSCALOOSA...
  HOLT...
  SAMANTHA...
  LAKE TUSCALOOSA BINION CREEK LANDING...

THESE STORMS MAY INTENSIFY...SO BE CERTAIN TO MONITOR LOCAL RADIO AND
TV STATIONS...AS WELL AS LOCAL CABLE TV OUTLETS... FOR ADDITIONAL
INFORMATION AND POSSIBLE WARNINGS FROM THE NATIONAL WEATHER SERVICE.

&&

LAT...LON 3341 8766 3361 8757 3359 8732 3352 8732
      3350 8726 3348 8729 3349 8733 3346 8733
      3342 8725 3332 8718 3328 8707 3322 8711
      3324 8714 3320 8720 3313 8720 3312 8729
      3301 8732 3300 8754 3309 8784 3325 8784
TIME...MOT...LOC 2236Z 290DEG 40KT 3359 8759 3342 8769
          3337 8780

75

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 5, 9:41 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Pickens, Sumter	64 min
Apr 5, 10:26 AM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Tuscaloosa	64 min
Apr 5, 11:07 AM CDT	Severe Thunderstorm Warning	BMX	Bibb, Perry	53 min
Apr 5, 11:27 AM CDT	Special Weather Statement	BMX	Marengo	48 min
Apr 5, 11:44 AM CDT	Severe Thunderstorm Warning	BMX	Dallas, Marengo	46 min
Apr 5, 12:03 PM CDT	Special Weather Statement	BMX	Chilton, Shelby	57 min
Apr 5, 12:21 PM CDT	Special Weather Statement	BMX	Autauga, Lowndes	54 min
Apr 5, 12:28 PM CDT	Special Weather Statement	BMX	Dallas	32 min
Apr 5, 12:49 PM CDT	Special Weather Statement	BMX	Coosa, Elmore	56 min
Apr 5, 12:56 PM CDT	Special Weather Statement	BMX	Montgomery	64 min
Apr 5, 3:56 PM CDT	Special Weather Statement	BMX	Marion	49 min
Apr 5, 4:17 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	28 min
Apr 5, 4:41 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	49 min
Apr 5, 4:52 PM CDT	Special Weather Statement	BMX	Pickens	38 min
Apr 5, 5:09 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Walker, Winston	66 min
Apr 5, 5:24 PM CDT	Special Weather Statement	BMX	Hale	51 min
Apr 5, 5:38 PM CDT	Severe Thunderstorm Warning	BMX	Walker	52 min
Apr 5, 5:59 PM CDT	Special Weather Statement	BMX	Jefferson	46 min
Apr 5, 6:06 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	39 min
Apr 5, 6:09 PM CDT	Special Weather Statement	BMX	Dallas	51 min
Apr 5, 6:14 PM CDT	Special Weather Statement	BMX	Blount	46 min
Apr 5, 6:18 PM CDT	Special Weather Statement	BMX	Chilton	42 min
Apr 5, 6:25 PM CDT	Special Weather Statement	BMX	Bibb	65 min
Apr 5, 6:27 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Dallas, Lowndes	48 min
Apr 5, 6:28 PM CDT	Special Weather Statement	BMX	Shelby	47 min
Apr 5, 6:33 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Shelby	42 min
Apr 5, 6:37 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Dallas, Elmore, Perry	53 min
Apr 5, 6:43 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby	47 min

Nearby

Special Weather Statements in Alabama, 2012 Every 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.