Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

August 9, 2012Lee County, Alabama

NWS Birmingham, AL issued this special weather statement at Aug 9, 2012, 5:01 PM CDT for Lee County, Alabama. It was in force for 44 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: Aug 9, 2012, 5:01 PM CDT (22:01 UTC)
Expired: Aug 9, 2012, 5:45 PM CDT
In force: 44 min
Issued by: NWS Birmingham, AL

County Lee County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 10.0 hours before the alert went out and 120 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: 2486 J/kg
Mixed-layer CIN: -18 J/kg
Mixed-layer LCL: 661 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 20 m²/s²
0-3 km storm-relative helicity: 23 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

591 
WWUS84 KBMX 092201
SPSBMX

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
501 PM CDT THU AUG 9 2012

ALZ045-047-092245-
LEE AL-MACON AL-
501 PM CDT THU AUG 9 2012

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN MACON AND LEE
COUNTIES UNTIL 545 PM CDT...

AT 455 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR AUBURN...MOVING EAST AT 20 MPH.

WIND GUSTS UP TO 50 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  OPELIKA...
  SMITHS...
  BEAUREGARD...
  GRIFFEN MILL...
  BEANS MILL...

TORRENTIAL RAIN...WHICH MAY FLOOD LOW LYING AREAS SUCH AS DITCHES AND
UNDERPASSES...IS ALSO LIKELY. DO NOT DRIVE YOUR VEHICLE ON A FLOODED
ROADWAY.

&&

LAT...LON 3247 8516 3247 8532 3245 8534 3243 8556
      3261 8560 3274 8513 3248 8506
TIME...MOT...LOC 2201Z 259DEG 17KT 3254 8547

$$

56

The office that day

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

Issued	Product	Office	Counties	Lasted
Aug 8, 7:45 PM CDT	Special Weather Statement	BMX	Walker	30 min
Aug 9, 9:29 AM CDT	Special Weather Statement	BMX	Tuscaloosa	46 min
Aug 9, 10:17 AM CDT	Areal Flood Advisory	BMX	Fayette, Lamar, Pickens, Tuscaloosa	3 hr
Aug 9, 10:26 AM CDT	Special Weather Statement	BMX	Jefferson	49 min
Aug 9, 10:36 AM CDT	Special Weather Statement	BMX	Cherokee	39 min
Aug 9, 11:07 AM CDT	Special Weather Statement	BMX	Jefferson	38 min
Aug 9, 11:12 AM CDT	Special Weather Statement	BMX	Clay	48 min
Aug 9, 11:21 AM CDT	Areal Flood Advisory	BMX	Blount, Jefferson, St. Clair, Shelby	114 min
Aug 9, 11:37 AM CDT	Severe Thunderstorm Warning	BMX	Calhoun, St. Clair, Shelby, Talladega	38 min
Aug 9, 11:46 AM CDT	Areal Flood Advisory	BMX	Etowah	119 min
Aug 9, 12:02 PM CDT	Special Weather Statement	BMX	Etowah	43 min
Aug 9, 12:15 PM CDT	Special Weather Statement	BMX	Calhoun, Clay, Cleburne, Talladega	45 min
Aug 9, 12:24 PM CDT	Areal Flood Advisory	BMX	Calhoun, Clay, Talladega	111 min
Aug 9, 1:49 PM CDT	Areal Flood Advisory	BMX	Marengo, Sumter	116 min
Aug 9, 3:43 PM CDT	Special Weather Statement	BMX	Dallas	47 min
Aug 9, 4:33 PM CDT	Areal Flood Advisory	BMX	Elmore, Macon, Montgomery	3 hr
Aug 9, 4:42 PM CDT	Areal Flood Advisory	BMX	Autauga, Lowndes	3 hr
Aug 9, 5:13 PM CDT	Areal Flood Advisory	BMX	Lee	2 hr
Aug 9, 5:21 PM CDT	Areal Flood Advisory	BMX	Shelby	114 min
Aug 9, 5:41 PM CDT	Flash Flood Warning	BMX	Shelby	3 hr
Aug 9, 6:39 PM CDT	Special Weather Statement	BMX	Talladega	51 min

Nearby

Special Weather Statements in Alabama, 2012 Every special weather statement 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; the sounding from the Mesonet's radiosonde archive.