Alert archive / Alabama / Special Weather Statements in 2011

Special Weather Statement, NWS Birmingham, AL

July 10, 2011Elmore County, Alabama

NWS Birmingham, AL issued this special weather statement at Jul 10, 2011, 1:12 PM CDT for Elmore County, Alabama. It was in force for 33 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: Jul 10, 2011, 1:12 PM CDT (18:12 UTC)
Expired: Jul 10, 2011, 1:45 PM CDT
In force: 33 min
Issued by: NWS Birmingham, AL

County Elmore County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 6.2 hours before the alert went out and 68 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: 2576 J/kg
Mixed-layer CIN: -53 J/kg
Mixed-layer LCL: 827 m above ground
0-6 km bulk shear: 2 kt
0-1 km storm-relative helicity: -46 m²/s²
0-3 km storm-relative helicity: -16 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.

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What forecasters said that day

The local office's own words before this special weather statement 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 special weather statement went out at Jul 10, 12:34 PM CDT, 38 minutes earlier.

Area forecast discussion, Jul 10, 12:34 PM CDT, 38 minutes before

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Hazardous weather outlook, Jul 10, 6:30 AM CDT, 6 hours 42 minutes before

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In the hours before

Special weather statement, Jul 10, 1:05 PM CDT, 7 minutes before

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Special weather statement, Jul 10, 1:12 PM CDT, 0 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE BIRMINGHAM AL
112 PM CDT SUN JUL 10 2011

ALZ041-043-101845-
AUTAUGA AL-ELMORE AL-
112 PM CDT SUN JUL 10 2011

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN AUTAUGA AND
NORTHWESTERN ELMORE COUNTIES UNTIL 145 PM CDT...

AT 107 PM CDT...THE NATIONAL WEATHER SERVICE WAS TRACKING A STRONG
THUNDERSTORM NEAR TITUS...OR 14 MILES NORTH OF MILLBROOK...MOVING
SOUTHEAST AT 10 MPH.

WIND GUSTS UP TO 40 MPH ARE EXPECTED WITH THIS STORM...ALONG WITH
HEAVY RAIN AND FREQUENT DANGEROUS LIGHTNING.

LOCATIONS IN OR NEAR THE PATH OF THIS STORM INCLUDE...
  WEOKA MILLS...
  DEATSVILLE...
  TEN CEDAR ESTATES...
  ELMORE...
  DEXTER...

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 8645 3271 8646 3271 8641 3274 8641
      3275 8639 3275 8634 3277 8633 3264 8612
TIME...MOT...LOC 1811Z 321DEG 8KT 3267 8637

14

The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 9, 7:34 PM CDT	Areal Flood Advisory	BMX	Walker	116 min
Jul 9, 8:28 PM CDT	Areal Flood Advisory	BMX	Shelby	2 hr
Jul 9, 8:46 PM CDT	Special Weather Statement	BMX	Pickens	44 min
Jul 10, 1:05 PM CDT	Special Weather Statement	BMX	Blount	25 min
Jul 10, 1:14 PM CDT	Special Weather Statement	BMX	Russell	46 min
Jul 10, 2:02 PM CDT	Special Weather Statement	BMX	Shelby	43 min
Jul 10, 2:10 PM CDT	Special Weather Statement	BMX	Barbour	50 min
Jul 10, 3:07 PM CDT	Special Weather Statement	BMX	Montgomery	38 min
Jul 10, 3:51 PM CDT	Special Weather Statement	BMX	Shelby	39 min
Jul 10, 3:55 PM CDT	Heat Advisory	BMX	Autauga, Barbour, Bibb, Blount, Bullock, Calhoun and 33 more	27 hr
Jul 10, 4:26 PM CDT	Special Weather Statement	BMX	Bibb	64 min
Jul 10, 4:33 PM CDT	Special Weather Statement	BMX	Dallas	57 min
Jul 10, 4:39 PM CDT	Special Weather Statement	BMX	Jefferson	51 min
Jul 10, 4:39 PM CDT	Severe Thunderstorm Warning	BMX	Dallas	43 min
Jul 10, 4:51 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Bibb, Chilton, Dallas, Perry	39 min
Jul 10, 5:49 PM CDT	Areal Flood Advisory	BMX	Tuscaloosa	116 min
Jul 10, 6:15 PM CDT	Special Weather Statement	BMX	Tuscaloosa	45 min
Jul 10, 6:16 PM CDT	Flash Flood Warning	BMX	Tuscaloosa	73 min

Nearby

Special Weather Statements in Alabama, 2011 Every special weather statement 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.