Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

May 6, 2012Lamar County, Alabama

NWS Birmingham, AL issued this special weather statement at May 6, 2012, 6:35 PM CDT for Lamar County, Alabama. It was in force for 40 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 6, 2012, 6:35 PM CDT (23:35 UTC)
Expired: May 6, 2012, 7:15 PM CDT
In force: 40 min
Issued by: NWS Birmingham, AL

County Lamar County, AL

The radar

The Columbus AFB radar (KGWX), 18 km from the middle of the area, began a volume at 23:36 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, 11.6 hours before the alert went out and 148 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: 2479 J/kg
Mixed-layer CIN: -32 J/kg
Mixed-layer LCL: 912 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: -16 m²/s²
0-3 km storm-relative helicity: -6 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 May 6, 3:37 PM CDT, 2 hours 58 minutes earlier.

Area forecast discussion, May 6, 3:37 PM CDT, 2 hours 58 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
337 PM CDT SUN MAY 6 2012

.DISCUSSION...

SHORT TERM...THIS AFTERNOON AND TONIGHT

MOST OF THE STORMS FROM EARLIER TODAY HAVE PUSHED SOUTH OF THE
FORECAST AREA ALONG AN OUTFLOW BOUNDARIES. A FEW BOUNDARIES STILL
EXIST FROM PREVIOUS CONVECTION AND HAVE INITIATED A COUPLE OF STORMS
ACROSS MONTGOMERY AND BULLOCK COUNTIES. CLEARING HAS OCCURRED BEHIND THE
CONVECTION MAINLY NORTH OF A LINE FROM LIVINGSTON TO CLANTON TO
ROANOKE. HOWEVER...WEAK CONVECTIVE INHIBITION IS IN PLACE ACROSS
AREAS CURRENTLY WITH SUN. QUESTIONS STILL REMAIN ABOUT REDEVELOPMENT
LATER THIS AFTERNOON. ANY REDEVELOPMENT SHOULD REMAIN SCATTERED WITH
PULSE SEVERE STORMS POSSIBLE WITH DAYTIME HEATING THIS AFTERNOON. A
FEW SHOWERS AND STORMS HAVE ALREADY BEGUN TO REDEVELOP ACROSS THE
TENNESSEE VALLEY. VISIBLE SATELLITE SHOWS A LIMITED AMOUNT OF CU
ACROSS CENTRAL ALABAMA. THEREFORE...ADDITIONAL CONVECTION MAY REMAIN
RATHER ISOLATED. THE MAIN THREATS FROM ANY STORMS THAT FORM WILL BE
LARGE HAIL AND DAMAGING WINDS. A FEW OF THESE SHOWERS AND
THUNDERSTORMS COULD PERSIST INTO THE OVERNIGHT HOURS BUT SHOULD
WEAKEN SHORTLY AFTER SUNSET DUE TO THE LOSS OF DAYTIME HEATING.

MA

PREVIOUS LONG TERM DISCUSSION...MONDAY THROUGH SATURDAY

INTO MONDAY...AGAIN THINKING HAS CHANGED ONLY A LITTLE. OUR PATTERN
IS CHANGING...WITH TODAY'S SHORTWAVE ENERGY MOVING TO THE SE AND
AWAY. ANOTHER SMALL RIPPLE SHOULD MOVE THROUGH DURING THE DAY ACROSS
N AL...BUT WEAKER THAN TODAY. OVERALL MOISTURE WILL INCREASE AS WE
MOVE THROUGH MONDAY AHEAD OF OUR NEXT APPROACHING FRONTAL SYSTEM. BY
MONDAY NIGHT...THIS SYSTEM WILL HAVE PUSHED SE ACROSS THE C U.S.
INTO W TN/AR...A TAD SLOWER THAN YESTERDAY'S RUN. ALTHOUGH MOST OF
THE STRONGER ACTIVITY ASSOCIATED WITH THE FRONT SHOULD BE FURTHER N
CLOSER TO THE SURFACE LOW AS IT MOVES ACROSS THE OHIO VALLEY...SOME
POSSIBLE STRONG CONVECTION ASSOCIATED WITH LINE COULD AFFECT THE NW
COUNTIES AS EARLY AS TUES PRE DAWN HOURS DEPENDING ON TIMING. THE
BULK OF THE FRONT SHOULD MOVE THROUGH LATE TUESDAY INTO
WEDNESDAY...AGAIN SLIGHTLY SLOWER THAN YESTERDAY. SEVERE RISK AT
THIS TIME CONTINUES TO BE ON THE LOW END WITH THE MAIN ENERGY WELL
TO OUR NE AS THE FRONT MOVES THROUGH.

MODELS CONTINUE TO HAVE PRECIP ENDING LATE IN THE DAY WED INTO WED
EVENING SE WITH THE PASSAGE OF THE UPPER TROUGH FOLLOWING THE
FRONT WHICH SHOULD USHER IN SOME DRIER AND COOLER AIR INTO THE
AREA.

AS FOR RE-ENTRY OF RAIN CHANCES FOR NEXT WEEKEND. MODELS ALTHOUGH
NOT ENTIRELY IN AGREEMENT...BUT ARE BOTH AGREEING WITH A SLIGHTLY
SLOWER ARRIVAL OF THE UPPER LOW ACROSS THE SOUTHERN U.S. AND
THUS ONLY LOW POPS S AT THIS TIME FOR THE WEEKEND. HOWEVER...POPS
FOR NEXT WEEKEND ARE NOT ONLY DEPENDENT ON TIMING OF THE LOW BUT
HOW FAR S THE EVENTUAL TRACK IS AS TO WHETHER OR NOT SIGNIFICANT
OR INCONSEQUENTIAL RAIN OCCURS.

MNK

&&

.AVIATION...
18Z TAF DISCUSSION.

THUNDERSTORMS HAVE PUSHED BY MOST TERMINALS THIS AFTERNOON. IT
APPEARS THE BEST CHANCE OF ADDITIONAL ACTIVITY WILL BE NEAR
TOI...BUT DID NOT MENTION ANYTHING AT THIS TIME. THE ATMOSPHERE
BEHIND THE OUTFLOW HAS STABILIZED IN THE LOWER LEVELS BUT WILL
QUICKLY REBOUND LATE THIS AFTERNOON. WILL MONITOR CLOSELY FOR
ADDITIONAL THUNDERSTORMS AFTER 21Z FOR POSSIBLE INCLUSION LATER.
OTHERWISE...VFR CONDITIONS THROUGH 06Z OUTSIDE THE RAIN AREAS. KEPT
THE CEILINGS VFR OVERNIGHT WITH VIS DROPPING INTO MVFR TOWARD 11Z.
WILL REEVALUATE THE POTENTIAL LOWER CLOUDS AND FOG ON THE NEXT
PACKAGE.

75

NOTE***THE NATIONAL WEATHER SERVICE IS ISSUING SEASONAL TERMINAL
FORECASTS FOR THE TALLADEGA MUNICIPAL AIRPORT (KASN) IN
TALLADEGA...ALABAMA. THE FORECASTS WILL LAST THROUGH AT LEAST THE
9TH OF MAY. DUE TO THE LIMITED AVAILABILITY OF OBSERVATIONS...KASN
TAF WILL HAVE AMD NOT SKED APPENDED TO THE END OF THE FORECAST.

&&

.PRELIMINARY POINT TEMPS/POPS...
GADSDEN     63  81  63  82  62 /  30  40  60  70  40
ANNISTON    65  81  64  82  62 /  30  40  60  70  40
BIRMINGHAM  65  84  65  83  62 /  20  40  60  60  40
TUSCALOOSA  66  87  65  85  63 /  20  40  60  60  40
CALERA      65  84  65  83  64 /  30  40  60  70  40
AUBURN      66  82  64  84  64 /  30  40  40  70  40
MONTGOMERY  66  85  65  85  66 /  30  40  50  70  40
TROY        66  84  65  85  65 /  30  40  40  70  40

&&

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

&&

Hazardous weather outlook, May 6, 5:24 PM CDT, 1 hour 11 minutes before

HAZARDOUS WEATHER OUTLOOK...CORRECTED
NATIONAL WEATHER SERVICE BIRMINGHAM AL
524 PM CDT SUN MAY 6 2012

ALZ011>015-017>050-071845-
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-
524 PM CDT SUN MAY 6 2012

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

.DAY ONE...TONIGHT.

THERE IS A THREAT OF ISOLATED SEVERE THUNDERSTORMS THIS
EVENING...WITH DAMAGING STRAIGHT LINE WINDS AND LARGE HAIL. THERE IS
NOT A THREAT FOR TORNADO ACTIVITY. THE INITIAL COMPLEX OF STORMS
HAVE MOVED SOUTH OF THE AREA...BUT WITH PEAK HEATING AND AN UNSTABLE
AIRMASS...ADDITIONAL STORMS HAVE BEGUN TO DEVELOP IN NORTHERN
ALABAMA. THESE STORMS WILL LIKELY IMPACT THE NORTHERN HALF OF
CENTRAL ALABAMA THROUGH AT LEAST 10 PM. THE MAIN AREA FOR POTENTIAL
SEVERE WEATHER WILL GENERALLY BE NORTH OF A VERNON...TO
CHELSEA...TO WEDOWEE LINE. WILL NEED TO KEEP AN EYE ON ANY
ADDITIONAL DEVELOPMENT TO OUR NORTH FOR ACTIVITY DURING THE
OVERNIGHT HOURS.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY.

THERE IS A THREAT OF ADDITIONAL SEVERE THUNDERSTORMS...WITH DAMAGING
WINDS AND LARGE HAIL...FROM MONDAY AFTERNOON THROUGH TUESDAY...AS A
COLD FRONT APPROACHES AND SLOWLY MOVES THROUGH THE STATE.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT MAY BE NEEDED
THIS EVENING...AND AGAIN MONDAY AFTERNOON THROUGH TUESDAY...DUE TO
THE SEVERE THUNDERSTORM THREAT.

In the hours before

Local storm report, May 6, 5:58 PM CDT, 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
558 PM CDT SUN MAY 06 2012

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

0547 PM     HAIL             2 WNW HALEYVILLE        34.25N 87.65W
05/06/2012  E1.00 INCH       MARION             AL   CO-OP OBSERVER

            LARGE TREE DOWN ON A FENCE AS WELL.

0550 PM     TSTM WND GST     HALEYVILLE              34.24N 87.62W
05/06/2012  E60.00 MPH       WINSTON            AL   AMATEUR RADIO

            WINDS WERE ESTIMATED AT OR JUST GREATER THAN 60 MPH FOR
            ABOUT ONE MINUTE.

&&

16

Special weather statement, May 6, 6:01 PM CDT, 34 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
601 PM CDT SUN MAY 6 2012

ALZ020-021-062345-
CHEROKEE AL-CLEBURNE AL-
601 PM CDT SUN MAY 6 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN CLEBURNE AND
SOUTHEASTERN CHEROKEE COUNTIES UNTIL 645 PM CDT...

AT 558 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 7 MILES EAST OF PLEASANT GAP...OR 8 MILES SOUTHEAST OF
FORNEY...MOVING SOUTH AT 5 MPH.

HAIL UP TO THE SIZE OF PENNIES AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  BORDEN SPRINGS...

&&

LAT...LON 3389 8552 3403 8546 3402 8540 3385 8537
      3385 8538
TIME...MOT...LOC 2302Z 006DEG 4KT 3397 8540

GRANTHAM

Local storm report, May 6, 6:07 PM CDT, 28 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
607 PM CDT SUN MAY 06 2012

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

0603 PM     HAIL             6 WNW HUEYTOWN          33.48N 87.08W
05/06/2012  E1.00 INCH       JEFFERSON          AL   AMATEUR RADIO

            QUARTER SIZE HAIL AT HILLVIEW DRIVE IN ROCK CREEK.

&&

GRANTHAM

Special weather statement, May 6, 6:28 PM CDT, 7 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
628 PM CDT SUN MAY 6 2012

ALZ011-014-015-070015-
MARION AL-WALKER AL-WINSTON AL-
628 PM CDT SUN MAY 6 2012

...SIGNIFICANT WEATHER ADVISORY FOR WINSTON...WALKER AND NORTHEASTERN
MARION COUNTIES UNTIL 715 PM CDT...

AT 627 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM 8 MILES NORTHEAST OF
HACKLEBURG TO PARRISH...AND MOVING SOUTH AT 10 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THESE
STORMS.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  LYNN...
  BELOIT...
  ASHBANK...
  PARRISH...
  NAUVOO...

&&

LAT...LON 3431 8766 3431 8742 3380 8701 3364 8730
      3431 8784 3432 8766
TIME...MOT...LOC 2328Z 347DEG 8KT 3438 8776 3374 8725

GRANTHAM

Special weather statement, May 6, 6:29 PM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
629 PM CDT SUN MAY 6 2012

ALZ024-070015-
JEFFERSON AL-
629 PM CDT SUN MAY 6 2012

...SIGNIFICANT WEATHER ADVISORY FOR CENTRAL JEFFERSON COUNTY UNTIL
715 PM CDT...

AT 627 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR SYLVAN SPRINGS...OR 7 MILES NORTHWEST OF
HUEYTOWN...MOVING SOUTHEAST AT 10 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  FAIRFIELD...
  HUEYTOWN...
  BESSEMER...
  MULGA...
  SYLVAN SPRINGS...

&&

LAT...LON 3340 8682 3330 8707 3356 8718 3364 8702
TIME...MOT...LOC 2329Z 333DEG 9KT 3352 8707

GRANTHAM

Special weather statement, May 6, 6:35 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
635 PM CDT SUN MAY 6 2012

ALZ012-070015-
LAMAR AL-
635 PM CDT SUN MAY 6 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LAMAR COUNTY UNTIL 715
PM CDT...

AT 631 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM 9 MILES SOUTHWEST OF DETROIT...OR 10 MILES WEST OF
SULLIGENT...MOVING EAST AT 20 MPH.

PEA SIZE HAIL AND WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS
STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  SULLIGENT...
  LAMAR COUNTY AIRPORT...
  CREWS...
  BEAVERTON...
  BLOOMING GROVE...

&&

LAT...LON 3384 8824 3403 8821 3399 8795 3375 8795
      3383 8825
TIME...MOT...LOC 2335Z 283DEG 17KT 3394 8827

GRANTHAM

The office that day

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

Issued	Product	Office	Counties	Lasted
May 5, 7:00 PM CDT	Special Weather Statement	BMX	Calhoun	45 min
May 5, 7:06 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	39 min
May 5, 7:38 PM CDT	Special Weather Statement	BMX	Randolph	52 min
May 6, 4:17 AM CDT	Special Weather Statement	BMX	Calhoun, Etowah	58 min
May 6, 5:33 AM CDT	Special Weather Statement	BMX	Calhoun, Etowah	57 min
May 6, 6:14 AM CDT	Special Weather Statement	BMX	St. Clair	46 min
May 6, 6:20 AM CDT	Special Weather Statement	BMX	Talladega	55 min
May 6, 6:48 AM CDT	Severe Thunderstorm Warning	BMX	Clay, St. Clair, Talladega	42 min
May 6, 6:53 AM CDT	Severe Thunderstorm Warning	BMX	Clay, Cleburne, Randolph	20 min
May 6, 7:29 AM CDT	Special Weather Statement	BMX	Clay, Randolph, Talladega	31 min
May 6, 7:47 AM CDT	Special Weather Statement	BMX	St. Clair	43 min
May 6, 8:33 AM CDT	Special Weather Statement	BMX	Shelby	42 min
May 6, 9:04 AM CDT	Special Weather Statement	BMX	Randolph	41 min
May 6, 9:13 AM CDT	Special Weather Statement	BMX	Chilton	47 min
May 6, 9:28 AM CDT	Severe Thunderstorm Warning	BMX	Chambers, Randolph	32 min
May 6, 10:01 AM CDT	Special Weather Statement	BMX	Bibb	44 min
May 6, 10:05 AM CDT	Special Weather Statement	BMX	Autauga	40 min
May 6, 10:16 AM CDT	Severe Thunderstorm Warning	BMX	Autauga, Lowndes	29 min
May 6, 10:25 AM CDT	Special Weather Statement	BMX	Dallas	50 min
May 6, 10:50 AM CDT	Special Weather Statement	BMX	Perry	40 min
May 6, 11:01 AM CDT	Special Weather Statement	BMX	Lowndes	44 min
May 6, 11:25 AM CDT	Special Weather Statement	BMX	Pike	50 min
May 6, 11:38 AM CDT	Special Weather Statement	BMX	Lowndes	52 min
May 6, 11:48 AM CDT	Severe Thunderstorm Warning	BMX	Dallas	27 min
May 6, 12:09 PM CDT	Special Weather Statement	BMX	Russell	36 min
May 6, 12:15 PM CDT	Special Weather Statement	BMX	Pike	30 min
May 6, 12:27 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Pike	33 min
May 6, 12:41 PM CDT	Special Weather Statement	BMX	Marengo	49 min
May 6, 12:44 PM CDT	Special Weather Statement	BMX	Barbour	46 min
May 6, 12:56 PM CDT	Severe Thunderstorm Warning	BMX	Pike	34 min
May 6, 12:57 PM CDT	Severe Thunderstorm Warning	BMX	Barbour, Russell	48 min
May 6, 1:27 PM CDT	Severe Thunderstorm Warning	BMX	Barbour	33 min
May 6, 1:33 PM CDT	Special Weather Statement	BMX	Marengo	42 min
May 6, 2:11 PM CDT	Special Weather Statement	BMX	Marengo	49 min
May 6, 3:08 PM CDT	Severe Thunderstorm Warning	BMX	Bullock, Montgomery	37 min
May 6, 3:43 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	32 min
May 6, 4:15 PM CDT	Special Weather Statement	BMX	Montgomery	45 min
May 6, 5:01 PM CDT	Special Weather Statement	BMX	Winston	44 min
May 6, 5:24 PM CDT	Special Weather Statement	BMX	Shelby	51 min
May 6, 5:26 PM CDT	Special Weather Statement	BMX	Shelby	49 min
May 6, 5:36 PM CDT	Special Weather Statement	BMX	Winston	39 min
May 6, 5:45 PM CDT	Severe Thunderstorm Warning	BMX	Marion, Winston	45 min
May 6, 5:46 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	44 min
May 6, 5:48 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson	42 min
May 6, 6:01 PM CDT	Special Weather Statement	BMX	Cherokee	44 min
May 6, 6:26 PM CDT	Areal Flood Advisory	BMX	Walker, Winston	3 hr
May 6, 6:28 PM CDT	Special Weather Statement	BMX	Walker, Winston	47 min
May 6, 6:29 PM CDT	Special Weather Statement	BMX	Jefferson	46 min
May 6, 6:43 PM CDT	Severe Thunderstorm Warning	BMX	Walker, Winston	47 min
May 6, 6:45 PM CDT	Special Weather Statement	BMX	Cleburne	45 min
May 6, 6:51 PM CDT	Severe Thunderstorm Warning	BMX	Lamar	39 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.