Alert archive / Alabama / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 243, NWS Birmingham, AL

July 10, 2012Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 10, 2012, 4:02 PM CDT for Tuscaloosa County, Alabama. It was in force for 28 min. 4 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
Jul 10, 2012, 4:02 PM CDT (21:02 UTC)
Expired
Jul 10, 2012, 4:30 PM CDT
In force
28 min
Issued by
NWS Birmingham, AL
Area
Storm-based polygon

County Tuscaloosa County, AL

The radar

The Birmingham radar (KBMX), 53 km from the middle of the area, began a volume at 21:03 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

TimeReportWhereRemark
Jul 10, 4:03 PM CDTTSTM WND DMG3 Sw Turkey Creek At Tu, ALTREES BLOWN DOWN AND BLOCKING THE ROADWAY AT HIGHWAY 69 AND TIERCE ROAD.
Jul 10, 4:13 PM CDTTSTM WND DMGCottondale, ALA FEW TREES WERE BLOWN DOWN IN AND AROUND COTTONDALE.
Jul 10, 4:23 PM CDTTSTM WND DMGTuscaloosa, ALSEVERAL TREES AND POWER LINES BLOWN DOWN IN TUSCALOOSA AND IN OTHER PARTS OF THE COUNTY.
Jul 10, 4:25 PM CDTTSTM WND DMGTuscaloosa, ALSEVERAL TREES WERE BLOWN DOWN ON THE UNIVERSITY OF ALABAMA CAMPUS.

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

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 9.0 hours before the alert went out and 51 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2012-07-10Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 923 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2012-07-10The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -32 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
923 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
611 m above ground
0-6 km bulk shear
9 kt
0-1 km storm-relative helicity
-32 m²/s²
0-3 km storm-relative helicity
23 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.

592 
WUUS54 KBMX 102102
SVRBMX
ALC125-102130-
/O.NEW.KBMX.SV.W.0243.120710T2102Z-120710T2130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE BIRMINGHAM AL
402 PM CDT TUE JUL 10 2012

THE NATIONAL WEATHER SERVICE IN BIRMINGHAM HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  TUSCALOOSA COUNTY IN WEST CENTRAL ALABAMA...

* UNTIL 430 PM CDT

* AT 359 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
  LAKE TUSCALOOSA BINION CREEK LANDING TO DEERLICK CREEK CAMPGROUNDS
  TO LAKE WILDWOOD TO COALING...AND MOVING NORTHEAST AT 45 MPH.

* LOCATIONS IMPACTED INCLUDE...
  VANCE...ABERNANT...LAKE VIEW...BANKHEAD LOCK AND DAM...BULL CITY...
  TANNEHILL IRONWORKS STATE PARK...EAST BROOKWOOD AND CAFFEE
  JUNCTION.

THIS INCLUDES...
INTERSTATE 20 EXIT NUMBERS 79 THROUGH 100...

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

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

LAT...LON 3333 8774 3359 8733 3359 8732 3352 8732
      3350 8726 3350 8728 3348 8729 3349 8733
      3346 8733 3342 8725 3332 8718 3328 8707
      3325 8706 3322 8711 3322 8717 3320 8720
      3313 8720 3313 8728 3305 8732 3320 8746
TIME...MOT...LOC 2102Z 234DEG 40KT 3335 8755 3331 8744
          3324 8733 3317 8727

$$

56

The office that day

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

IssuedProductOfficeCountiesLasted
Jul 9, 7:22 PM CDTSpecial Weather StatementBMXRandolph23 min
Jul 9, 7:29 PM CDTSpecial Weather StatementBMXCoosa, Jefferson, Shelby, Talladega61 min
Jul 9, 7:30 PM CDTSpecial Weather StatementBMXChambers, Lee, Russell, Tallapoosa45 min
Jul 9, 8:00 PM CDTSpecial Weather StatementBMXCleburne30 min
Jul 9, 8:30 PM CDTSpecial Weather StatementBMXCalhoun, Cleburne, St. Clair45 min
Jul 9, 9:15 PM CDTSpecial Weather StatementBMXCalhoun, Cleburne, St. Clair45 min
Jul 9, 9:57 PM CDTSpecial Weather StatementBMXCalhoun, Cherokee, Cleburne, Etowah48 min
Jul 9, 10:36 PM CDTAreal Flood AdvisoryBMXCleburne114 min
Jul 10, 2:46 PM CDTSpecial Weather StatementBMXLowndes, Montgomery, Pike59 min
Jul 10, 2:49 PM CDTSpecial Weather StatementBMXGreene26 min
Jul 10, 3:37 PM CDTSpecial Weather StatementBMXAutauga, Chilton, Elmore, Montgomery53 min
Jul 10, 3:44 PM CDTSpecial Weather StatementBMXTuscaloosa46 min
Jul 10, 4:17 PM CDTSevere Thunderstorm WarningBMXBibb, Chilton, Coosa, Elmore, Shelby43 min
Jul 10, 4:27 PM CDTSevere Thunderstorm WarningBMXJefferson, Tuscaloosa, Walker48 min
Jul 10, 4:35 PM CDTSpecial Weather StatementBMXFayette, Lamar, Marion, Walker, Winston40 min
Jul 10, 4:37 PM CDTSpecial Weather StatementBMXElmore, Macon, Russell, Tallapoosa38 min
Jul 10, 4:56 PM CDTSevere Thunderstorm WarningBMXChilton, Clay, Coosa, St. Clair, Shelby, Talladega and 1 more49 min
Jul 10, 5:11 PM CDTSpecial Weather StatementBMXLee, Macon, Russell49 min
Jul 10, 5:28 PM CDTSevere Thunderstorm WarningBMXChambers, Lee, Russell50 min
Jul 10, 5:44 PM CDTSevere Thunderstorm WarningBMXCalhoun, Clay, Cleburne, Randolph, St. Clair, Shelby and 1 more44 min
Jul 10, 6:27 PM CDTSpecial Weather StatementBMXBlount, Calhoun, Cherokee, Clay, Cleburne, Etowah and 2 more48 min
Jul 10, 6:47 PM CDTAreal Flood AdvisoryBMXBlount58 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2012Every 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.