Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 174, NWS Birmingham, AL

June 11, 20125 counties in Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 11, 2012, 8:53 PM CDT for 5 counties in Alabama. It was in force for 52 min. 2 reports 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, 2012, 8:53 PM CDT (01:53 UTC)
Expired: Jun 11, 2012, 9:45 PM CDT
In force: 52 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Clay County, AL, Coosa County, AL, Shelby County, AL, St. Clair County, AL, Talladega County, AL

The radar

The Birmingham radar (KBMX), 60 km from the middle of the area, began a volume at 01:56 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.

What was reported inside it

Time	Report	Where	Remark
Jun 11, 9:10 PM CDT	TSTM WND DMG	Sylacauga, AL	A FEW TREES REPORTED DOWN IN THE CITY OF SYLACAUGA.
Jun 11, 9:28 PM CDT	TSTM WND DMG	Hollins, AL	REPORTED BY EMA DAMAGE TO A ROOF OF A CHURCH...POWER LINES DOWN AND PART OF A ROOF BLOWN OFF A HOME.

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

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 11, 5:17 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 1.9 hours before the alert went out and 61 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: 2695 J/kg
Mixed-layer CIN: -1 J/kg
Mixed-layer LCL: 779 m above ground
0-6 km bulk shear: 18 kt
0-1 km storm-relative helicity: 92 m²/s²
0-3 km storm-relative helicity: 137 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.

533 
WUUS54 KBMX 120153
SVRBMX
ALC027-037-115-117-121-120245-
/O.NEW.KBMX.SV.W.0174.120612T0153Z-120612T0245Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
853 PM CDT MON JUN 11 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WESTERN CLAY COUNTY IN EAST CENTRAL ALABAMA...
  NORTHERN COOSA COUNTY IN EAST CENTRAL ALABAMA...
  SOUTHEASTERN ST. CLAIR COUNTY IN ALABAMA...
  EASTERN SHELBY COUNTY IN ALABAMA...
  TALLADEGA COUNTY IN EAST CENTRAL ALABAMA...

* UNTIL 945 PM CDT

* AT 852 PM CDT...THE NATIONAL WEATHER SERVICE INDICATED A LINE OF
  SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS
  OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM
  RIVERSIDE TO CHILDERSBURG TO BLUE SPRINGS...AND MOVING EAST AT 40
  MPH.

* LOCATIONS IMPACTED INCLUDE...
  CHILDERSBURG...PELL CITY...TALLADEGA SPRINGS...SYLACAUGA...
  TALLADEGA...WEOGUFKA...STEWARTVILLE AND GOODWATER.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 152 THROUGH 179...

WINDS OF 60 TO 70 MPH WILL BREAK LARGE TREE LIMBS AND CAUSE SOME
DAMAGE...ESPECIALLY TO SMALLER STRUCTURES.

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 3310 8585 3309 8601 3299 8601 3300 8652
      3302 8652 3302 8656 3307 8661 3307 8667
      3330 8649 3374 8637 3374 8611 3370 8615
      3368 8614 3368 8606 3359 8599 3358 8579
      3355 8579 3348 8589 3347 8579
TIME...MOT...LOC 0153Z 271DEG 35KT 3365 8626 3329 8635
          3307 8653

$$

MA

2 follow-up statements

761 
WWUS54 KBMX 120209
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
909 PM CDT MON JUN 11 2012

ALC115-117-120219-
/O.CAN.KBMX.SV.W.0174.000000T0000Z-120612T0245Z/
ST. CLAIR AL-SHELBY AL-
909 PM CDT MON JUN 11 2012

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN SHELBY AND CENTRAL ST.
CLAIR COUNTIES IS CANCELLED...

THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE 
WARNED AREA.

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

LAT...LON 3310 8585 3309 8601 3299 8601 3300 8652
      3301 8653 3312 8646 3318 8650 3328 8643
      3329 8636 3335 8634 3339 8638 3351 8628
      3349 8624 3354 8619 3370 8619 3367 8606
      3359 8599 3358 8579 3348 8589 3345 8579
TIME...MOT...LOC 0209Z 271DEG 35KT 3361 8615 3325 8624
          3303 8643

$$

ALC027-037-121-120245-
/O.CON.KBMX.SV.W.0174.000000T0000Z-120612T0245Z/
CLAY AL-COOSA AL-TALLADEGA AL-
909 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR TALLADEGA...
NORTHERN COOSA AND WESTERN CLAY COUNTIES UNTIL 945 PM CDT...

AT 906 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM RIVERSIDE TO SYCAMORE TO MARBLE VALLEY...MOVING EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  SYLACAUGA...TALLADEGA...WEOGUFKA...STEWARTVILLE...GOODWATER...
  ASHLAND...LINCOLN...WINTERBORO...SYCAMORE AND UNITY.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 162 THROUGH 179...

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

LAT...LON 3310 8585 3309 8601 3299 8601 3300 8652
      3301 8653 3312 8646 3318 8650 3328 8643
      3329 8636 3335 8634 3339 8638 3351 8628
      3349 8624 3354 8619 3370 8619 3367 8606
      3359 8599 3358 8579 3348 8589 3345 8579
TIME...MOT...LOC 0209Z 271DEG 35KT 3361 8615 3325 8624
          3303 8643

$$

MA

284 
WWUS54 KBMX 120227
SVSBMX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
927 PM CDT MON JUN 11 2012

ALC027-037-121-120245-
/O.CON.KBMX.SV.W.0174.000000T0000Z-120612T0245Z/
CLAY AL-COOSA AL-TALLADEGA AL-
927 PM CDT MON JUN 11 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
TALLADEGA...NORTHERN COOSA AND WESTERN CLAY COUNTIES UNTIL 945 PM
CDT...

AT 924 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
LINE OF SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS IN
EXCESS OF 60 MPH.  THESE STORMS WERE LOCATED ALONG A LINE EXTENDING
FROM TALLADEGA MUNICIPAL AIRPORT TO WOODSTOCK TO WEOGUFKA...MOVING
EAST AT 40 MPH.

LOCATIONS IMPACTED INCLUDE...
  GOODWATER...ASHLAND...GRANT TOWN...HANOVER...PARKDALE...HATCHET...
  BRADFORD...HOLLINS...CHANDLER SPRINGS AND IRONATON.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 173 THROUGH 179...

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

LAT...LON 3310 8585 3310 8597 3309 8601 3299 8601
      3301 8646 3328 8621 3367 8606 3362 8602
      3360 8602 3359 8599 3358 8579 3348 8589
      3347 8589 3345 8579
TIME...MOT...LOC 0227Z 271DEG 35KT 3360 8600 3324 8609
          3302 8629

$$

MA

The office that day

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

Issued	Product	Office	Counties	Lasted
Jun 11, 7:17 PM CDT	Severe Thunderstorm Warning	BMX	Shelby, Talladega	43 min
Jun 11, 7:26 PM CDT	Severe Thunderstorm Warning	BMX	Jefferson, Walker	64 min
Jun 11, 7:30 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Pickens, Sumter, Tuscaloosa	45 min
Jun 11, 7:51 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Walker	39 min
Jun 11, 7:56 PM CDT	Special Weather Statement	BMX	Shelby	49 min
Jun 11, 7:59 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Chilton, Hale, Jefferson, Perry, Shelby and 1 more	46 min
Jun 11, 8:03 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Sumter	42 min
Jun 11, 8:06 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, St. Clair, Shelby	54 min
Jun 11, 8:18 PM CDT	Flash Flood Warning	BMX	Shelby, Talladega	3 hr
Jun 11, 8:45 PM CDT	Special Weather Statement	BMX	Marengo	45 min
Jun 11, 8:54 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chilton, Coosa, Dallas, Perry	51 min
Jun 11, 9:38 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Coosa, Elmore, Lowndes, Montgomery, Tallapoosa	52 min
Jun 11, 10:13 PM CDT	Special Weather Statement	BMX	Bullock, Lee, Macon, Montgomery	47 min
Jun 11, 10:54 PM CDT	Special Weather Statement	BMX	Barbour, Bullock, Lee, Pike, Russell	66 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012 Every severe thunderstorm warning 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.