Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 276, NWS Birmingham, AL

June 11, 2011Tallapoosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 11, 2011, 2:28 PM CDT for Tallapoosa County, Alabama. It was in force for 47 min. 1 report came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Jun 11, 2011, 2:28 PM CDT (19:28 UTC)
Expired: Jun 11, 2011, 3:15 PM CDT
In force: 47 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Tallapoosa County, AL

What was reported inside it

Time	Report	Where	Remark
Jun 11, 2:36 PM CDT	HAIL 1.25	Dadeville, AL

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched one storm report to this severe thunderstorm warning; the first came 8 minutes after it went out.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.5 hours before the alert went out and 107 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: 835 J/kg
Mixed-layer CIN: -107 J/kg
Mixed-layer LCL: 1318 m above ground
0-6 km bulk shear: 8 kt
0-1 km storm-relative helicity: 7 m²/s²
0-3 km storm-relative helicity: 0 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.

318 
WUUS54 KBMX 111928
SVRBMX
ALC123-112015-
/O.NEW.KBMX.SV.W.0276.110611T1928Z-110611T2015Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
228 PM CDT SAT JUN 11 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  CENTRAL TALLAPOOSA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 315 PM CDT

* AT 226 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A SEVERE
  THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
  WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
  DADEVILLE...AND MOVING SOUTH AT 5 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DADEVILLE...CAMP HILL...DARE PARK...LAKE MARTIN SUSANNAH CROSSING
  AND MAXWELL GUNTER RECREATION AREA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION...MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF
YOUR HOME OR BUSINESS.

&&

TO REPORT SEVERE WEATHER...
CALL 1-800-856-0758.

LAT...LON 3273 8562 3276 8589 3296 8583 3294 8561
TIME...MOT...LOC 1928Z 007DEG 4KT 3286 8573

$$

27

2 follow-up statements

223 
WWUS54 KBMX 111943
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
243 PM CDT SAT JUN 11 2011

ALC123-112015-
/O.CON.KBMX.SV.W.0276.000000T0000Z-110611T2015Z/
TALLAPOOSA AL-
243 PM CDT SAT JUN 11 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL
TALLAPOOSA COUNTY UNTIL 315 PM CDT...

AT 240 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH.  THIS STORM WAS LOCATED NEAR
DADEVILLE...MOVING SOUTH AT 5 MPH.

LOCATIONS IMPACTED INCLUDE...
  DADEVILLE...CAMP HILL...DARE PARK...LAKE MARTIN SUSANNAH CROSSING
  AND MAXWELL GUNTER RECREATION AREA.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3273 8562 3276 8589 3296 8583 3294 8561
TIME...MOT...LOC 1943Z 007DEG 4KT 3284 8573

$$

27

782 
WWUS54 KBMX 112011
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
311 PM CDT SAT JUN 11 2011

ALC123-112021-
/O.EXP.KBMX.SV.W.0276.000000T0000Z-110611T2015Z/
TALLAPOOSA AL-
311 PM CDT SAT JUN 11 2011

...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL TALLAPOOSA COUNTY WILL
EXPIRE AT 315 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.

TO REPORT SEVERE WEATHER...CALL 1-800-856-0758.

LAT...LON 3273 8562 3276 8589 3296 8583 3294 8561
TIME...MOT...LOC 2011Z 007DEG 4KT 3281 8573

$$

27

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Jun 11, 12:15 PM CDT, 2 hours 13 minutes earlier.

Area forecast discussion, Jun 11, 12:15 PM CDT, 2 hours 13 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1215 PM CDT SAT JUN 11 2011

.UPDATE...FOR 18Z AVIATION.

&&

.DISCUSSION...

IF YOU TAKE A LOOK AT MORNING SATELLITE IMAGES...SAY AROUND
12Z...YOU CAN BEGIN TO DISCERN THE IDEA OF A WEAK SYNOPTIC BOUNDARY
THAT HAS MOVED INTO THE NORTHERN HALF OF THE STATE.  THIS BOUNDARY
WILL LIKELY HELP TO FOCUS THUNDERSTORM DEVELOPMENT THIS AFTERNOON.
CURRENT FORECAST HAS CHANCE POPS ACROSS ALONG THE I-20/59
CORRIDOR...AND I CONTINUE TO LIKE THIS IDEA FOR THE AFTERNOON.  CU
FIELDS SHOULD BEGIN TO POP ACROSS ALABAMA AFTER 11 AM...AND IF WE
HAVE ANYTHING LIKE WE HAD YESTERDAY...STORMS SHOULD BEGIN TO DEVELOP
BY 12 PM.  THIS MORNING'S SOUNDING IS VERY SIMILAR TO YESTERDAY...
SO EVEN THOUGH THE MICROBURST POTENTIAL IS LOW...THERE WILL BE A
SHOT AT HAIL AGAIN TODAY.  THAT SAID...EVEN WITH THE CHANCE OF THE
HAIL...THE ISOLATED TO SCATTERED NATURE OF THE STORMS WILL PRECLUDE
ANYTHING BEING ADDED TO THE HAZARDOUS WEATHER OUTLOOK.

UPDATE OUT SHORTLY.

27

&&

.AVIATION...18Z TAF DISCUSSION.

MOSTLY VFR CONDITIONS THIS AFTERNOON...BUT WILL HAVE TO DEAL WITH
ISOLATED TO SCATTERED SH/TS WHICH WILL HANDLE WITH AMD THROUGH 02Z.
BEYOND 02Z...PROBABLY WILL SEE AT LEAST MVFR VIS NEAR SUNRISE AT
JUST ABOUT EVERY SITE...WITH KANB POTENTIALLY FALLING TO IFR FOR A
COUPLE OF HOURS.

WINDS WILL BASICALLY BE LIGHT OUT OF THE NORTH...OTHER THAN IF YOU
GET AROUND ONE OF THE AFTERNOON THUNDERSTORMS...WHICH COULD GIVE A
GUST TO 25 KTS...AND SOME HAIL.

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.

27

&&

.CLIMATE...

THROUGH THE FIRST 9 DAYS OF JUNE...THE BIG CITY CLIMATE LOCATIONS
(BHM...TCL...ANB...AND MGM) HAVE ALL EXPERIENCED EITHER THE
WARMEST OR SECOND WARMEST START TO THE MONTH IN THEIR RESPECTIVE
PERIODS OF RECORD. THIS JUNE HEAT WAVE...AT LEAST SO FAR...HAS
RIVALED OR EXCEEDED THE JUNE 1985 HEAT WAVE.

&&

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

&&

Hazardous weather outlook, Jun 11, 6:42 AM CDT, 7 hours 46 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
642 AM CDT SAT JUN 11 2011

ALZ011>015-017>050-120100-
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-
642 AM CDT SAT JUN 11 2011

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

.DAY ONE...TODAY AND TONIGHT.

NO WIDESPREAD HAZARDOUS WEATHER IS EXPECTED AT THIS TIME.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY.

NO WIDESPREAD 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 11, 9:05 AM CDT, 5 hours 23 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
905 AM CDT SAT JUN 11 2011

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

0421 PM     TSTM WND DMG     HAGLER                  33.04N 87.34W
06/10/2011                   TUSCALOOSA         AL   PUBLIC

            MULTIPLE TREES DOWN JUST NORTH OF U.S. HWY 82 ON SERTY
            BOYD RD.

&&

SUNGER

Special weather statement, Jun 11, 1:24 PM CDT, 1 hour 4 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
124 PM CDT SAT JUN 11 2011

ALZ028-111915-
CLAY AL-
124 PM CDT SAT JUN 11 2011

...SIGNIFICANT WEATHER ADVISORY FOR EASTERN CLAY COUNTY UNTIL 215 PM
CDT...

AT 121 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR LINEVILLE.  THIS STORM WAS NEARLY STATIONARY.

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...
  LINEVILLE...
  ASHLAND...
  CRAGFORD...
  MELLOW VALLEY...

&&

LAT...LON 3330 8565 3321 8565 3317 8565 3319 8590
      3342 8583 3341 8564 3332 8565 3331 8564
TIME...MOT...LOC 1825Z 005DEG 2KT 3332 8573

27

Special weather statement, Jun 11, 2:18 PM CDT, 10 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
218 PM CDT SAT JUN 11 2011

ALZ036-043-112000-
COOSA AL-ELMORE AL-
218 PM CDT SAT JUN 11 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHWESTERN ELMORE AND SOUTHERN
COOSA COUNTIES UNTIL 300 PM CDT...

AT 217 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR WELONA...OR 8 MILES SOUTHWEST OF ROCKFORD...MOVING
SOUTH AT 5 MPH.

HAIL UP TO ONE-HALF INCH IN DIAMETER AND WIND GUSTS UP TO 40 MPH ARE
EXPECTED WITH THIS STORM.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  SPEED...
  WELONA...
  TITUS...
  WEOKA MILLS...
  TEN CEDAR ESTATES...

&&

LAT...LON 3263 8641 3275 8641 3275 8637 3278 8641
      3279 8641 3290 8638 3288 8617 3261 8617
TIME...MOT...LOC 1918Z 007DEG 4KT 3279 8629

27

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 10, 7:50 PM CDT	Special Weather Statement	BMX	Bullock	25 min
Jun 10, 8:05 PM CDT	Special Weather Statement	BMX	Montgomery	25 min
Jun 10, 8:07 PM CDT	Special Weather Statement	BMX	Pike	23 min
Jun 10, 8:45 PM CDT	Special Weather Statement	BMX	Barbour	30 min
Jun 10, 9:40 PM CDT	Special Weather Statement	BMX	Barbour	35 min
Jun 10, 10:18 PM CDT	Special Weather Statement	BMX	Dale	27 min
Jun 10, 10:49 PM CDT	Special Weather Statement	BMX	Russell	41 min
Jun 11, 1:24 PM CDT	Special Weather Statement	BMX	Clay	51 min
Jun 11, 1:29 PM CDT	Severe Thunderstorm Warning	BMX	Clay	30 min
Jun 11, 2:18 PM CDT	Special Weather Statement	BMX	Coosa	42 min
Jun 11, 2:31 PM CDT	Severe Thunderstorm Warning	BMX	Elmore	29 min
Jun 11, 2:35 PM CDT	Special Weather Statement	BMX	Cherokee	40 min
Jun 11, 2:47 PM CDT	Special Weather Statement	BMX	Cherokee, Etowah, St. Clair	43 min
Jun 11, 2:53 PM CDT	Special Weather Statement	BMX	Shelby	37 min
Jun 11, 2:59 PM CDT	Severe Thunderstorm Warning	BMX	Elmore	26 min
Jun 11, 3:06 PM CDT	Special Weather Statement	BMX	Tallapoosa	39 min
Jun 11, 3:09 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	29 min
Jun 11, 3:18 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	117 min
Jun 11, 3:28 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	47 min
Jun 11, 3:33 PM CDT	Special Weather Statement	BMX	Calhoun, Cleburne, Talladega	42 min
Jun 11, 3:39 PM CDT	Special Weather Statement	BMX	Bibb	51 min
Jun 11, 3:42 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	48 min
Jun 11, 3:55 PM CDT	Special Weather Statement	BMX	Autauga	35 min
Jun 11, 4:14 PM CDT	Special Weather Statement	BMX	Calhoun, Cleburne, Talladega	46 min
Jun 11, 4:28 PM CDT	Special Weather Statement	BMX	Dallas	47 min
Jun 11, 4:33 PM CDT	Special Weather Statement	BMX	Dallas	27 min
Jun 11, 4:39 PM CDT	Special Weather Statement	BMX	Clay, Randolph, Talladega	51 min
Jun 11, 4:41 PM CDT	Special Weather Statement	BMX	Russell	49 min
Jun 11, 4:45 PM CDT	Severe Thunderstorm Warning	BMX	Russell	30 min
Jun 11, 4:52 PM CDT	Special Weather Statement	BMX	Lowndes	23 min
Jun 11, 5:16 PM CDT	Special Weather Statement	BMX	Barbour	44 min
Jun 11, 5:25 PM CDT	Special Weather Statement	BMX	Hale	50 min
Jun 11, 5:54 PM CDT	Special Weather Statement	BMX	Russell	36 min
Jun 11, 6:45 PM CDT	Special Weather Statement	BMX	Fayette	45 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2011 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive.