Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

June 21, 2011Autauga County, Alabama

NWS Birmingham, AL issued this special weather statement at Jun 21, 2011, 7:44 PM CDT for Autauga County, Alabama. It was in force for 46 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 21, 2011, 7:44 PM CDT (00:44 UTC)
Expired: Jun 21, 2011, 8:30 PM CDT
In force: 46 min
Issued by: NWS Birmingham, AL

County Autauga County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 0.7 hours before the alert went out and 92 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: 1308 J/kg
Mixed-layer CIN: 0 J/kg
Mixed-layer LCL: 620 m above ground
0-6 km bulk shear: 40 kt
0-1 km storm-relative helicity: -75 m²/s²
0-3 km storm-relative helicity: -34 m²/s²
Significant tornado parameter: -0.1
Supercell composite: -1.1

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 21, 6:45 PM CDT, 59 minutes earlier.

Area forecast discussion, Jun 21, 6:45 PM CDT, 59 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
645 PM CDT TUE JUN 21 2011

.UPDATE...AVIATION DISCUSSION.

&&

.DISCUSSION...

MUCH APPRECIATED AND NEEDED RAINFALL ACROSS CENTRAL ALABAMA TODAY.
GOOD LOW LEVEL MOISTURE FEED AROUND THE NORTHEASTERN GULF OF
MEXICO SURFACE HIGH. IN THE UPPER LEVELS...UPPER CLOSED LOW
SPINNING MOVING SLOWLY NORTHEAST ACROSS THE UPPER PLAIN STATES.
SOUTHWEST FLOW ACROSS THE STATE USHERING IN SEVERAL UPPER LEVEL
SHORTWAVES ACROSS THE AREA. THIS IS MORE THAN THE NORMAL
SUMMERTIME CONVECTION. ACTIVITY IS EXPECTED TO CONTINUE ACROSS THE
AREA AS FLOW CHANGES FROM SOUTHWEST TO MORE ZONAL. SHOULD REMAIN
IN THIS BETTER THAN NORMAL RAINFALL PATTERN THROUGH THE PERIOD AS
LONG SCALE TROUGHING WILL REMAIN THROUGH THE WEEKEND. AS WE MOVE
INTO THE BEGINNING OF NEXT WEEK IN OUR EXTENDED...A WEAK SURFACE
SYSTEM ATTEMPTS TO EDGE NEAR THE REGION BUT WEAKENS AS A UPPER
RIDGE OF HIGH PRESSURE BUILDS OVER THE MUCH OF THE U.S. HAMPERING
PROGRESSION OF THE SURFACE SYSTEM...KEEPING US STILL ON THE WET
SIDE OF THE FLOW. THIS WILL OPEN US UP TO NORTHWEST TO NORTHERLY
UPPER FLOW BY THE LATTER PART OF THE WEEKEND AND THE POSSIBILITY
FOR SOME NOCTURNAL MCS STORMS TO POSSIBLY FILTER INTO THE AREA.

08/MNK

&&

.AVIATION...00Z TAF DISCUSSION.

CENTRAL ALABAMA WILL BE UNDER A WET PATTERN FOR THE NEXT FEW DAYS
DUE TO A LARGE UPPER CYCLONE OVER THE MISSISSIPPI VALLEY REGION.
NMRS SHWRS AND A FEW TSTMS WILL CONTINUE THRU 02Z AS CONVECTION
INITIATED BY DAYTIME HEATING BEGINS TO WEAKEN.  STRONGER STORMS
STILL POSSIBLE AT KMGM AND KTOI AS THE AIR MASS HAS NOT BEEN WORKED
OVER ACROSS THE SOUTHEAST COUNTIES.  MOST OF THE PCPN SHOULD BE GONE
BY 02Z AS AREA RAINS ITSELF OUT.

DUE TO WIDESPREAD RAIN ACROSS AREA AND MOIST CONDITIONS IN THE LOWER
LEVELS...EXPECT WIDESPREAD MVFR CIGS TO DEVELOP ACROSS CENTRAL
ALABAMA BETWEEN 09Z AND 12Z.  IF SKIES CLEAR ACROSS AREA BEFORE
06Z...WILL LIKELY ADD SOME FOG TO NEXT TAF UPDATE. SCATTERED TO
NMRS SHOWERS AND TSTMS WILL DEVELOP ONCE AGAIN AFTER 15Z.

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.

58/ROSE

&&

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

&&

Hazardous weather outlook, Jun 21, 12:52 PM CDT, 6 hours 52 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1252 PM CDT TUE JUN 21 2011

ALZ011>015-017>050-221749-
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-
1252 PM CDT TUE JUN 21 2011

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

.DAY ONE...THIS AFTERNOON AND TONIGHT.

THE PROBABILITY FOR WIDESPREAD HAZARDOUS WEATHER IS LOW AT THIS
TIME.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY.

NO HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

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

In the hours before

Local storm report, Jun 21, 5:20 PM CDT, 2 hours 24 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
520 PM CDT TUE JUN 21 2011

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

0413 PM     TSTM WND DMG     3 ENE IRONDALE          33.55N 86.65W
06/21/2011                   JEFFERSON          AL   EMERGENCY MNGR

            TREE ON HOUNSE ON ROCK RIDGE ROAD IN MOUNTAINBROOK. TREES
            DOWN ON ROBERT SMITH DRIVE IN HOMEWOOD.

&&

JTALLEY

Local storm report, Jun 21, 5:22 PM CDT, 2 hours 22 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
522 PM CDT TUE JUN 21 2011

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

0337 PM     TSTM WND DMG     2 ENE SPRINGVILLE       33.78N 86.44W
06/21/2011                   ST. CLAIR          AL   EMERGENCY MNGR

            TREE DOWN BLOCKING HIGHWAY 11, PINE MOUNTAIN ROAD, AND
            HWY 174

&&

JTALLEY

Local storm report, Jun 21, 5:26 PM CDT, 2 hours 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
526 PM CDT TUE JUN 21 2011

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

0354 PM     TSTM WND DMG     3 NW PELL CITY          33.59N 86.31W
06/21/2011                   ST. CLAIR          AL   EMERGENCY MNGR

            TREE DOWN ON OLD WAGON ROAD, HWY 231 AT OLD BEAVERS ROAD,
            BUCK VALLEY ROAD, VILLAGE SPRINGS ROAD.

&&

JTALLEY

Special weather statement, Jun 21, 6:32 PM CDT, 1 hour 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
632 PM CDT TUE JUN 21 2011

ALZ018-019-026-220015-
CALHOUN AL-ETOWAH AL-ST. CLAIR AL-
632 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN ST. CLAIR...ETOWAH
AND NORTHWESTERN CALHOUN COUNTIES UNTIL 715 PM CDT...

AT 630 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR RAGLAND...OR 11 MILES NORTHEAST OF PELL CITY...
MOVING NORTHEAST AT 35 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  MARKTON...
  RAINBOW CITY...
  GADSDEN...
  HOKES BLUFF...
  RAGLAND...

&&

LAT...LON 3406 8577 3401 8575 3365 8603 3367 8605
      3367 8616 3370 8619 3368 8621 3366 8617
      3363 8616 3361 8618 3366 8628 3418 8617
TIME...MOT...LOC 2332Z 210DEG 32KT 3370 8613

27

Special weather statement, Jun 21, 6:57 PM CDT, 47 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
657 PM CDT TUE JUN 21 2011

ALZ042-044-220045-
LOWNDES AL-MONTGOMERY AL-
657 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN MONTGOMERY AND LOWNDES
COUNTIES UNTIL 745 PM CDT...

AT 653 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR BEECHWOOD...OR 6 MILES SOUTH OF MOSSES...MOVING
NORTHEAST AT 25 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...
  MOSSES...
  HAYNEVILLE...
  BEECHWOOD...
  LOWNDESBORO...
  PINTLALA...

&&

LAT...LON 3212 8678 3237 8656 3237 8654 3234 8653
      3234 8650 3236 8649 3238 8646 3241 8646
      3240 8643 3241 8640 3223 8619 3200 8667
TIME...MOT...LOC 2356Z 234DEG 22KT 3210 8665

27

Special weather statement, Jun 21, 7:44 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
744 PM CDT TUE JUN 21 2011

ALZ041>044-220130-
AUTAUGA AL-ELMORE AL-LOWNDES AL-MONTGOMERY AL-
744 PM CDT TUE JUN 21 2011

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHEASTERN AUTAUGA...
NORTHWESTERN MONTGOMERY...NORTHERN LOWNDES AND SOUTHWESTERN ELMORE
COUNTIES UNTIL 830 PM CDT...

AT 742 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR WHITE HALL...OR 10 MILES NORTHWEST OF MOSSES...
MOVING NORTHEAST AT 50 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  PRATTVILLE...
  MONTGOMERY...
  MILLBROOK...
  LOWNDESBORO...
  AUTAUGAVILLE...

&&

LAT...LON 3230 8684 3231 8683 3232 8685 3235 8681
      3238 8682 3269 8639 3236 8614 3219 8676
TIME...MOT...LOC 0044Z 239DEG 46KT 3232 8671

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 21, 7:05 PM CDT	Severe Thunderstorm Warning	BMX	Lowndes, Montgomery	40 min
Jun 21, 8:15 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Elmore, Lowndes, Montgomery	20 min
Jun 21, 8:35 PM CDT	Special Weather Statement	BMX	Elmore	40 min
Jun 21, 10:21 PM CDT	Special Weather Statement	BMX	Macon	39 min
Jun 22, 9:24 AM CDT	Special Weather Statement	BMX	Winston	51 min
Jun 22, 1:35 PM CDT	Special Weather Statement	BMX	Calhoun	40 min
Jun 22, 1:37 PM CDT	Special Weather Statement	BMX	Greene, Marengo, Sumter	53 min
Jun 22, 1:37 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cherokee, Cleburne, Etowah	38 min
Jun 22, 1:42 PM CDT	Special Weather Statement	BMX	Lamar, Marion	63 min
Jun 22, 2:22 PM CDT	Special Weather Statement	BMX	Fayette, Marion, Walker, Winston	38 min
Jun 22, 2:25 PM CDT	Special Weather Statement	BMX	Dallas, Greene, Hale, Perry	50 min
Jun 22, 3:05 PM CDT	Special Weather Statement	BMX	Walker, Winston	55 min
Jun 22, 3:18 PM CDT	Special Weather Statement	BMX	Bibb, Chilton, Dallas, Tuscaloosa	57 min
Jun 22, 3:52 PM CDT	Severe Thunderstorm Warning	BMX	Chilton, Coosa, Shelby	38 min
Jun 22, 4:07 PM CDT	Special Weather Statement	BMX	Blount, Etowah, Jefferson, St. Clair, Shelby	53 min
Jun 22, 4:09 PM CDT	Special Weather Statement	BMX	Macon	66 min
Jun 22, 4:12 PM CDT	Special Weather Statement	BMX	Coosa	63 min
Jun 22, 4:25 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	50 min
Jun 22, 4:57 PM CDT	Special Weather Statement	BMX	Calhoun, Clay, St. Clair, Shelby, Talladega	48 min
Jun 22, 5:01 PM CDT	Special Weather Statement	BMX	Lowndes, Montgomery	44 min
Jun 22, 5:22 PM CDT	Special Weather Statement	BMX	Chambers, Randolph	38 min
Jun 22, 5:35 PM CDT	Special Weather Statement	BMX	Cherokee	55 min
Jun 22, 5:37 PM CDT	Special Weather Statement	BMX	Cleburne	53 min
Jun 22, 5:41 PM CDT	Areal Flood Advisory	BMX	Montgomery	3 hr
Jun 22, 5:44 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun	31 min
Jun 22, 5:58 PM CDT	Severe Thunderstorm Warning	BMX	Calhoun, Cleburne	47 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.