Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

June 24, 2011Lamar County, Alabama

NWS Birmingham, AL issued this special weather statement at Jun 24, 2011, 3:17 PM CDT for Lamar County, Alabama. It was in force for 58 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: Jun 24, 2011, 3:17 PM CDT (20:17 UTC)
Expired: Jun 24, 2011, 4:15 PM CDT
In force: 58 min
Issued by: NWS Birmingham, AL

County Lamar County, AL

The radar

The Columbus AFB radar (KGWX), 25 km from the middle of the area, began a volume at 20:18 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, 8.3 hours before the alert went out and 147 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: 1692 J/kg
Mixed-layer CIN: -82 J/kg
Mixed-layer LCL: 755 m above ground
0-6 km bulk shear: 14 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 44 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 Jun 24, 12:56 PM CDT, 2 hours 21 minutes earlier.

Area forecast discussion, Jun 24, 12:56 PM CDT, 2 hours 21 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1256 PM CDT FRI JUN 24 2011

.UPDATE...AVIATION DISCUSSION.

&&

.DISCUSSION...

NO BIG CHANGES PLANNED FOR THE REMAINDER OF TODAY.  TEMPERATURES
WERE RUNNING WITHIN A COUPLE DEGREES OF FORECASTED LEVELS...AND I
THINK THE ONGOING HIGH TEMPERATURE FORECAST IS STILL ON TARGET. ALSO
HARD TO ARGUE WITH ONGOING POP FORECAST...WITH SLIGHTLY HIGHER POPS
IN THE NORTH COMPARED TO THE SOUTH. PRESENCE OF FRONT TO ALABAMA'S
NORTH AND SEVERAL CLOUDY/CLEAR BOUNDARIES IN THE NORTHERN PORTION OF
THE CENTRAL ALABAMA CWA SUGGESTS THAT THIS AREA WILL HAVE THE BEST
CHANCE OF CONVECTIVE INITIATION THIS AFTERNOON. HAVING SAID THAT...
AGREE WITH PREVIOUS SHIFT THAT RAIN/STORM COVERAGE SHOULD BE LESS
TODAY THAN PREVIOUS DAYS.

/61/

&&

.AVIATION...

18Z TAF DISCUSSION.

THUNDERSTORMS HAVE BEGUN TO FIRE UP ALONG AND JUST AHEAD OF A COLD
FRONT...ALONG THE TENNESSEE AND ALABAMA BORDER. I'VE CONTINUED THE
INCLUSION OF CB IN THE TAFS FOR THIS AFTERNOON TO INDICATE THE SMALL
CHANCE OF THESE STORMS GETTING INTO CENTRAL ALABAMA. IF ANY STORMS
ARE OBVIOUSLY HEADING FOR ANY PARTICULAR TAF LOCATION...WILL UPDATE
AS NECESSARY. OTHERWISE...WEATHER WILL REMAIN QUITE TYPICAL FOR
SUMMER WITH CUMULUS LEVEL CLOUDS LIFTING AND DISSIPATING AFTER
SUNSET. FOG FORMATION POTENTIAL DURING THE OVERNIGHT HOURS WILL
AGAIN BE A BIG QUESTION. FOR RIGHT NOW...I'VE ELECTED TO GO WITH A
PERSISTENCE APPROACH. THAT MEANS ONLY INCLUDING PREDOMINANT BR AT
TCL AND TOI. IF ANY STORMS WERE TO AFFECT A SITE LATE IN THE
AFTERNOON OR IN THE EVENING...THEN THE CHANCES OF LOWERED
VISIBILITIES DUE TO BR/FG AT THAT PARTICULAR SITE WOULD GO UP.

/61/

NOTICE...KEET TAF WILL HAVE (AMD LTD TO VIS WIND AND WX) AMENDED TO
THE END OF THE FORECAST UNTIL FURTHER NOTICE. THE CEILOMETER DATA
WILL BE GOING THROUGH NUMEROUS TESTS AND MONITORED FOR ACCURACY.

&&

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

&&

Hazardous weather outlook, Jun 24, 1:38 PM CDT, 1 hour 39 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
138 PM CDT FRI JUN 24 2011

ALZ011>015-017>050-251830-
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-
138 PM CDT FRI JUN 24 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

SCATTERED STRONG TO SEVERE STORMS...WITH DAMAGING WINDS AND
LARGE HAIL...WILL BE POSSIBLE ACROSS PORTIONS OF CENTRAL ALABAMA
THROUGH AROUND 9 PM. THE LOCATIONS WITH THE GREATEST CHANCE OF
SEVERE STORMS WILL BE FROM THE CITIES OF ALICEVILLE...TUSCALOOSA...
COLUMBIANA...SYLACAUGA...AND WEDOWEE...NORTHWARD.

.DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY.

ISOLATED STRONG TO SEVERE STORMS ARE EXPECTED SATURDAY AND SUNDAY.
THE THREAT WILL BE WIND GUSTS OF 40 TO 60 MPH. AT THIS TIME...IT
APPEARS THE STRONGEST ACTIVITY WILL BE DURING THE MAXIMUM HEATING OF
THE AFTERNOON INTO THE EARLY EVENING.

.SPOTTER INFORMATION STATEMENT...

ACTIVATION OF STORM SPOTTERS AND EMERGENCY MANAGEMENT IS NOT
ANTICIPATED AT THIS TIME.

61

In the hours before

Special weather statement, Jun 24, 2:32 PM CDT, 45 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
232 PM CDT FRI JUN 24 2011

ALZ011-242030-
MARION AL-
232 PM CDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN MARION COUNTY UNTIL 330
PM CDT...

AT 227 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM RED BAY TO 11 MILES WEST OF
MANTACHIE...AND MOVING SOUTHEAST AT 25 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS...ALONG WITH FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  HAMILTON...
  HACKLEBURG...
  WESTON...
  BRINN...
  SHOTSVILLE...

&&

LAT...LON 3431 8764 3417 8764 3407 8821 3430 8819
      3433 8817
TIME...MOT...LOC 1931Z 299DEG 23KT 3438 8811 3427 8864

61

Special weather statement, Jun 24, 2:37 PM CDT, 40 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
237 PM CDT FRI JUN 24 2011

ALZ017-018-020-242100-
BLOUNT AL-CHEROKEE AL-ETOWAH AL-
237 PM CDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR ETOWAH...NORTHERN CHEROKEE AND
BLOUNT COUNTIES UNTIL 400 PM CDT...

...STRONG TO SEVERE THUNDERSTORMS HEADED TOWARD ETOWAH...CHEROKEE
AND BLOUNT COUNTIES...

AT 235 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED THAT
THUNDERSTORMS WERE RAPIDLY DEVELOPING ALONG A LINE EXTENDING FROM 10
MILES NORTHWEST OF VALLEY HEAD TO 7 MILES NORTHWEST OF WEST POINT...
AND MOVING SOUTHEAST AT 20 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 50 MPH ARE
EXPECTED WITH THESE STORMS.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  BLOUNTSVILLE...
  CLEVELAND...
  CEDAR BLUFF...
  ONEONTA...
  CENTRE...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

&&

LAT...LON 3452 8550 3416 8543 3392 8616 3399 8619
      3397 8625 3399 8628 3384 8640 3377 8662
      3395 8684 3409 8669 3408 8669 3413 8661
      3426 8652 3427 8646 3411 8630 3421 8610
      3421 8585 3438 8563 3449 8558 3453 8551
TIME...MOT...LOC 1937Z 292DEG 19KT 3465 8573 3430 8704

03

Special weather statement, Jun 24, 3:17 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
317 PM CDT FRI JUN 24 2011

ALZ012-242115-
LAMAR AL-
317 PM CDT FRI JUN 24 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHERN LAMAR COUNTY UNTIL 415
PM CDT...

AT 314 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM BRINN TO 5 MILES NORTHWEST
OF AMORY...AND MOVING SOUTHEAST AT 25 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THESE STORMS...ALONG WITH
FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  SULLIGENT...
  VERNON...
  DETROIT...
  BEAVERTON...
  CREWS...

IF THREATENING WEATHER APPROACHES YOUR AREA...TAKE SHELTER IN A
STURDY BUILDING.

&&

LAT...LON 3405 8821 3406 8810 3405 8799 3402 8799
      3402 8795 3383 8795 3377 8797 3372 8826
TIME...MOT...LOC 2017Z 306DEG 21KT 3420 8783 3401 8854

61

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 24, 2:32 PM CDT	Special Weather Statement	BMX	Marion	58 min
Jun 24, 2:37 PM CDT	Special Weather Statement	BMX	Blount, Etowah	83 min
Jun 24, 3:20 PM CDT	Special Weather Statement	BMX	DeKalb	40 min
Jun 24, 3:25 PM CDT	Special Weather Statement	BMX	Marion, Winston	65 min
Jun 24, 3:28 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	47 min
Jun 24, 3:30 PM CDT	Severe Thunderstorm Warning	BMX	Lamar, Marion	45 min
Jun 24, 3:44 PM CDT	Areal Flood Advisory	BMX	Lamar	3 hr
Jun 24, 3:50 PM CDT	Special Weather Statement	BMX	Fayette	55 min
Jun 24, 4:03 PM CDT	Special Weather Statement	BMX	Blount, Etowah	57 min
Jun 24, 4:11 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion, Walker, Winston	49 min
Jun 24, 4:15 PM CDT	Severe Thunderstorm Warning	BMX	Cherokee	30 min
Jun 24, 4:38 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Etowah, St. Clair	67 min
Jun 24, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, St. Clair, Shelby, Talladega	39 min
Jun 24, 4:57 PM CDT	Special Weather Statement	BMX	Bibb	48 min
Jun 24, 4:59 PM CDT	Special Weather Statement	BMX	Tuscaloosa	46 min
Jun 24, 5:05 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Tuscaloosa	40 min
Jun 24, 5:23 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair	21 min
Jun 24, 5:26 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair, Talladega	49 min
Jun 24, 5:31 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	44 min
Jun 24, 5:42 PM CDT	Special Weather Statement	BMX	Chilton	48 min
Jun 24, 5:50 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Perry	40 min
Jun 24, 6:08 PM CDT	Special Weather Statement	BMX	Perry	52 min
Jun 24, 6:14 PM CDT	Special Weather Statement	BMX	Cleburne	46 min
Jun 24, 6:19 PM CDT	Special Weather Statement	BMX	Chilton, Shelby	41 min
Jun 24, 6:25 PM CDT	Severe Thunderstorm Warning	BMX	Cleburne, Randolph	35 min
Jun 24, 6:35 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa	40 min
Jun 24, 6:36 PM CDT	Severe Thunderstorm Warning	BMX	Sumter	39 min
Jun 24, 6:49 PM CDT	Special Weather Statement	BMX	Randolph	41 min

Nearby

Special Weather Statements in Alabama, 2011 Every special weather statement in 2011

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.