Alert archive / Alabama / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 298, NWS Birmingham, AL

June 17, 2011Lowndes County, Montgomery County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 17, 2011, 1:47 PM CDT for Lowndes County, Montgomery County, Alabama. It was in force for 28 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 17, 2011, 1:47 PM CDT (18:47 UTC)
Expired: Jun 17, 2011, 2:15 PM CDT
In force: 28 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Lowndes County, AL, Montgomery County, AL

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Jun 17, 11:42 AM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.8 hours before the alert went out and 127 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: 1495 J/kg
Mixed-layer CIN: -92 J/kg
Mixed-layer LCL: 688 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 29 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.

341 
WUUS54 KBMX 171847
SVRBMX
ALC085-101-171915-
/O.NEW.KBMX.SV.W.0298.110617T1847Z-110617T1915Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
147 PM CDT FRI JUN 17 2011

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EAST CENTRAL LOWNDES COUNTY IN SOUTH CENTRAL ALABAMA...
  WEST CENTRAL MONTGOMERY COUNTY IN SOUTH CENTRAL ALABAMA...

* UNTIL 215 PM CDT

* AT 147 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
  HAYNEVILLE...AND MOVING EAST AT 25 MPH.

* LOCATIONS IMPACTED INCLUDE...
  DAVENPORT...PINTLALA...HOPE HULL...SPRAGUE...SELLERS...SNOWDOUN...
  STRATA AND RAMER.

THIS INCLUDES...
INTERSTATE 65 EXIT NUMBERS 147 THROUGH 164...

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 3202 8671 3220 8661 3231 8630 3202 8619
      3202 8631 3205 8631 3205 8639 3202 8640
TIME...MOT...LOC 1847Z 272DEG 21KT 3215 8653

$$

75

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 17, 12:54 PM CDT, 53 minutes earlier.

Area forecast discussion, Jun 17, 12:54 PM CDT, 53 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1254 PM CDT FRI JUN 17 2011

.UPDATE...AVIATION DISCUSSION.

&&

.DISCUSSION...

WHAT'S LEFT OF THE OVERNIGHT CONVECTION IS QUICKLY DIMINISHING AS
IT PUSHES EWD ACROSS THE NE PART OF THE STATE. ANOTHER ROUND OF
SCATTERED TSTMS IS EXPECTED LATER TODAY AS YET ANOTHER UPPER LEVEL
SHORTWAVE SLIDES SEWD ACROSS THE AREA. DO NOT ANTICIPATE ANY
WIDESPREAD SEVERE WEATHER...HOWEVER STRONG GUSTY WINDS AND SMALL
HAIL WILL BE POSSIBLE WITH THE STRONGER STORMS. AS WAS THE CASE
THE LAST FEW NIGHTS...SOME OF STORMS COULD LINGER THRU THE EVNG
HRS AS NEW CONVECTION DEVELOPS ALONG OUTFLOW BOUNDARIES.

THE UPPER RIDGE WILL REALLY BEGIN TO BUILD EWD INTO THE REGION
OVER THE WEEKEND. A FEW STORMS WILL BE POSSIBLE ON SAT...MAINLY
ACROSS THE EAST...SO KEPT SLIGHT CHANCE POPS IN FOR THAT AREA. BY
SUNDAY...RAIN CHANCES SHOULD COME TO AN END AS THE RIDGE TAKES
CONTROL OF THE WEATHER PATTERN. DRY CONDITIONS WILL PERSIST THRU
EARLY NEXT WEEK AND TEMPS WILL WARM SLIGHTLY. COULD SEE SEVERAL
100 DEGREE READINGS ACROSS THE CWA DURING THE PERIOD.

FOR WED THRU FRI...MODELS ARE STILL HINTING AT A RATHER WET
PATTERN FOR CENTRAL ALABAMA AS AN UPPER LEVEL TROUGH AND
ASSOCIATED SFC FRONT PUSH EASTWARD TOWARD THE AREA PULLING AMPLE GULF
MOISTURE INTO THE REGION. LET'S KEEP OUR FINGERS CROSSED THAT THE
MODELS ARE ON TO SOMETHING BECAUSE WE DESPERATELY NEED THE RAIN.
THE CLOUDINESS AND RAINFALL WOULD ALSO OFFER A BRIEF REPRIEVE FROM
THE HEAT AS THEY SHOULD KEEP HIGHS IN THE UPPER 80S TO LOW 90S.

19

&&

.AVIATION...18Z TAF DISCUSSION.

A LINE OF STRONG TO SEVERE THUNDERSTORMS WILL CONTINUE TO MOVE
ACROSS CENTRAL ALABAMA THIS AFTERNOON...AFFECTING BHM...EET...AND
ANB. VIS WILL BE REDUCED DUE TO HEAVY RAIN AND HAIL...AND WIND GUSTS
UP TO 60 MPH ARE POSSIBLE. OUTSIDE OF THIS LINE...SCATTERED STORMS
ARE EXPECTED TO CONTINUE TO DEVELOP ACROSS MUCH OF THE AREA THROUGH
THE AFTERNOON AND EARLY EVENING. WILL COVER THIS WITH VCTS AND AMEND
AS NEEDED. PATCHY FOG IS POSSIBLE TONIGHT...PARTICULARLY ACROSS THE
NORTH WHERE SIGNIFICANT RAIN FELL TODAY.

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.

14

&&

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

&&

Hazardous weather outlook, Jun 17, 10:40 AM CDT, 3 hours 7 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE BIRMINGHAM AL
1040 AM CDT FRI JUN 17 2011

ALZ011>015-017>050-181130-
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-
1040 AM CDT FRI JUN 17 2011

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

.DAY ONE...TODAY AND TONIGHT.

STRONG TO SEVERE THUNDERSTORMS ARE POSSIBLE THROUGH 10 PM THIS
EVENING. THE STORMS WILL BE CAPABLE OF PRODUCING WIND GUSTS 50 TO
70 MPH...LARGE HAIL UP TO PING PONG BALL SIZE...DEADLY CLOUD TO
GROUND LIGHTNING...AND BRIEF HEAVY RAINFALL.

A LARGE OUTFLOW FROM EARLY MORNING THUNDERSTORMS NORTH IS INCHING
TOWARD CENTRAL ALABAMA. AS THE SUN PEAKS THROUGH THE CLOUDS...
INSTABILITY WILL INCREASE SOUTH OF THIS BOUNDARY. ADDITIONAL
THUNDERSTORMS ARE EXPECTED TO DEVELOP ALONG THIS OUTFLOW AND AHEAD
OF IT THROUGH THIS EVENING.

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

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 17, 1:09 PM CDT, 38 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
109 PM CDT FRI JUN 17 2011

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

1212 PM     TSTM WND DMG     5 S ALABASTER           33.17N 86.82W
06/17/2011                   SHELBY             AL   EMERGENCY MNGR

            TREES DOWN ON EDDINGS LANE AT HWY 119.

&&

JT

Local storm report, Jun 17, 1:12 PM CDT, 35 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
112 PM CDT FRI JUN 17 2011

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

1212 PM     TSTM WND DMG     5 NW ALABASTER          33.29N 86.89W
06/17/2011                   SHELBY             AL   EMERGENCY MNGR

            TREE DOWN ON ELVIRA ROAD AT HWY 52.

&&

JT

Local storm report, Jun 17, 1:13 PM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
113 PM CDT FRI JUN 17 2011

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

1208 PM     TSTM WND DMG     5 ESE VESTAVIA HILLS    33.40N 86.71W
06/17/2011                   SHELBY             AL   EMERGENCY MNGR

            TREE DOWN ON VALLEYDALE RAD AT INVERNESS LANE.

&&

JT

Special weather statement, Jun 17, 1:32 PM CDT, 15 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
132 PM CDT FRI JUN 17 2011

ALZ045-046-048-171915-
BULLOCK AL-MACON AL-RUSSELL AL-
132 PM CDT FRI JUN 17 2011

...SIGNIFICANT WEATHER ADVISORY FOR WESTERN RUSSELL...SOUTHEASTERN
MACON AND NORTHEASTERN BULLOCK COUNTIES UNTIL 215 PM CDT...

AT 132 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR UNION SPRINGS...MOVING EAST AT 15 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...
  HURTSBORO...
  GUERRYTON...
  SEDGEFIELD...
  FORT DAVIS...
  THREE NOTCH...

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

&&

LAT...LON 3215 8541 3213 8543 3209 8580 3227 8584
      3238 8542 3215 8535
TIME...MOT...LOC 1832Z 257DEG 13KT 3220 8571

75

Special weather statement, Jun 17, 1:35 PM CDT, 12 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
135 PM CDT FRI JUN 17 2011

ALZ019-021-028-029-171915-
CALHOUN AL-CLAY AL-CLEBURNE AL-RANDOLPH AL-
135 PM CDT FRI JUN 17 2011

...SIGNIFICANT WEATHER ADVISORY FOR RANDOLPH...CLEBURNE...EASTERN
CLAY AND EASTERN CALHOUN COUNTIES UNTIL 215 PM CDT...

AT 135 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM PIEDMONT TO ASHLAND...AND
MOVING EAST AT 30 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...
  HEFLIN...
  WEDOWEE...
  ROANOKE...
  BARFIELD...
  EDWARDSVILLE...

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

&&

LAT...LON 3312 8525 3311 8598 3396 8560 3396 8553
      3394 8551 3396 8549 3395 8543 3397 8540
      3327 8525
TIME...MOT...LOC 1835Z 271DEG 26KT 3392 8550 3323 8579

10/ARM

Special weather statement, Jun 17, 1:41 PM CDT, 6 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
141 PM CDT FRI JUN 17 2011

ALZ042-044>046-171930-
BULLOCK AL-LOWNDES AL-MACON AL-MONTGOMERY AL-
141 PM CDT FRI JUN 17 2011

...SIGNIFICANT WEATHER ADVISORY FOR MONTGOMERY...MACON...CENTRAL
LOWNDES AND BULLOCK COUNTIES UNTIL 230 PM CDT...

AT 142 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING STRONG
THUNDERSTORMS ALONG A LINE EXTENDING FROM DANNELLY FIELD TO AUBURN
UNIVERSITY IN MONTGOMERY TO HARDAWAY TO UNION SPRINGS...AND MOVING
NORTHEAST AT 10 MPH.

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

LOCATIONS IN OR NEAR THE PATH OF THESE STORMS INCLUDE...
  MONTGOMERY...
  TUSKEGEE...
  WAUGH...
  DANNELLY FIELD...
  WOODCREST...

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 3212 8612 3204 8631 3205 8639 3201 8640
      3199 8644 3209 8690 3244 8635 3241 8631
      3245 8632 3247 8630 3246 8619 3243 8619
      3240 8605 3244 8599 3243 8589 3250 8584
      3250 8580 3257 8577 3247 8543 3196 8561
TIME...MOT...LOC 1842Z 237DEG 10KT 3229 8640 3238 8616
          3232 8587 3216 8567

75

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 16, 7:00 PM CDT	Special Weather Statement	BMX	Bullock, Pike	45 min
Jun 16, 7:31 PM CDT	Special Weather Statement	BMX	Shelby	44 min
Jun 16, 8:14 PM CDT	Special Weather Statement	BMX	Shelby	46 min
Jun 16, 8:59 PM CDT	Special Weather Statement	BMX	Coosa	46 min
Jun 17, 12:47 AM CDT	Special Weather Statement	BMX	Winston	43 min
Jun 17, 1:13 AM CDT	Special Weather Statement	BMX	Jefferson	47 min
Jun 17, 8:48 AM CDT	Special Weather Statement	BMX	Lamar, Marion	57 min
Jun 17, 9:40 AM CDT	Special Weather Statement	BMX	Lamar, Marion, Winston	65 min
Jun 17, 10:49 AM CDT	Special Weather Statement	BMX	Walker	26 min
Jun 17, 11:29 AM CDT	Special Weather Statement	BMX	Blount, Jefferson, Tuscaloosa	31 min
Jun 17, 11:44 AM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Shelby	46 min
Jun 17, 12:08 PM CDT	Special Weather Statement	BMX	Bibb, Etowah, St. Clair, Shelby, Talladega	52 min
Jun 17, 12:10 PM CDT	Severe Thunderstorm Warning	BMX	St. Clair	50 min
Jun 17, 12:18 PM CDT	Special Weather Statement	BMX	Marion	57 min
Jun 17, 12:22 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Shelby, Talladega	38 min
Jun 17, 12:23 PM CDT	Special Weather Statement	BMX	Dallas	67 min
Jun 17, 12:28 PM CDT	Areal Flood Advisory	BMX	Jefferson, Shelby	2 hr
Jun 17, 12:32 PM CDT	Special Weather Statement	BMX	Montgomery	43 min
Jun 17, 12:49 PM CDT	Special Weather Statement	BMX	Calhoun	41 min
Jun 17, 12:53 PM CDT	Severe Thunderstorm Warning	BMX	Montgomery	52 min
Jun 17, 12:54 PM CDT	Special Weather Statement	BMX	Autauga, Chilton, Clay, Coosa, Perry, Talladega	51 min
Jun 17, 1:00 PM CDT	Severe Thunderstorm Warning	BMX	Coosa	45 min
Jun 17, 1:22 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Dallas, Lowndes	38 min
Jun 17, 1:32 PM CDT	Special Weather Statement	BMX	Bullock	43 min
Jun 17, 1:35 PM CDT	Special Weather Statement	BMX	Clay, Cleburne, Randolph	40 min
Jun 17, 1:41 PM CDT	Special Weather Statement	BMX	Bullock, Lowndes, Macon, Montgomery	49 min
Jun 17, 1:50 PM CDT	Special Weather Statement	BMX	Chambers, Elmore, Lee, Tallapoosa	55 min
Jun 17, 2:02 PM CDT	Special Weather Statement	BMX	Autauga	28 min
Jun 17, 2:06 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Macon, Montgomery	39 min
Jun 17, 2:37 PM CDT	Special Weather Statement	BMX	Barbour, Bullock, Macon, Montgomery, Pike, Russell	53 min
Jun 17, 2:53 PM CDT	Special Weather Statement	BMX	Lee	52 min
Jun 17, 3:14 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Russell	21 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; the sounding from the Mesonet's radiosonde archive.