Alert archive / Alabama / Special Weather Statements in 2012

Special Weather Statement, NWS Birmingham, AL

May 6, 2012Macon County, Alabama

NWS Birmingham, AL issued this special weather statement at May 6, 2012, 10:41 PM CDT for Macon County, Alabama. It was in force for 49 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: May 6, 2012, 10:41 PM CDT (03:41 UTC)
Expired: May 6, 2012, 11:30 PM CDT
In force: 49 min
Issued by: NWS Birmingham, AL

County Macon County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 3.7 hours before the alert went out and 138 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: 249 J/kg
Mixed-layer CIN: -83 J/kg
Mixed-layer LCL: 1807 m above ground
0-6 km bulk shear: 7 kt
0-1 km storm-relative helicity: 39 m²/s²
0-3 km storm-relative helicity: 55 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 May 6, 9:37 PM CDT, 1 hour 4 minutes earlier.

Area forecast discussion, May 6, 9:37 PM CDT, 1 hour 4 minutes before

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Hazardous weather outlook, May 6, 8:20 PM CDT, 2 hours 21 minutes before

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In the hours before

Local storm report, May 6, 8:35 PM CDT, 2 hours 6 minutes before

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Special weather statement, May 6, 9:29 PM CDT, 1 hour 12 minutes before

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Special weather statement, May 6, 9:56 PM CDT, 45 minutes before

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Special weather statement, May 6, 10:13 PM CDT, 28 minutes before

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Special weather statement, May 6, 10:27 PM CDT, 14 minutes before

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Special weather statement, May 6, 10:41 PM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 6, 7:04 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Walker	41 min
May 6, 7:20 PM CDT	Special Weather Statement	BMX	Jefferson	40 min
May 6, 7:44 PM CDT	Special Weather Statement	BMX	Jefferson, Tuscaloosa	46 min
May 6, 7:54 PM CDT	Special Weather Statement	BMX	Randolph	51 min
May 6, 8:19 PM CDT	Special Weather Statement	BMX	Pickens	41 min
May 6, 8:30 PM CDT	Special Weather Statement	BMX	Shelby	45 min
May 6, 9:29 PM CDT	Special Weather Statement	BMX	Chambers	46 min
May 6, 9:56 PM CDT	Special Weather Statement	BMX	Walker	49 min
May 6, 10:13 PM CDT	Special Weather Statement	BMX	Lee	47 min
May 6, 10:27 PM CDT	Special Weather Statement	BMX	Calhoun	48 min
May 6, 11:26 PM CDT	Special Weather Statement	BMX	Elmore	49 min
May 7, 12:54 PM CDT	Special Weather Statement	BMX	Fayette, Lamar	51 min
May 7, 1:20 PM CDT	Special Weather Statement	BMX	Pickens	40 min
May 7, 1:42 PM CDT	Special Weather Statement	BMX	Marion	48 min
May 7, 1:44 PM CDT	Special Weather Statement	BMX	Fayette, Pickens	46 min
May 7, 2:15 PM CDT	Special Weather Statement	BMX	Greene, Sumter	45 min
May 7, 2:29 PM CDT	Special Weather Statement	BMX	Tuscaloosa, Walker	46 min
May 7, 2:45 PM CDT	Severe Thunderstorm Warning	BMX	Walker	45 min
May 7, 3:05 PM CDT	Special Weather Statement	BMX	Greene, Hale, Sumter	40 min
May 7, 3:15 PM CDT	Special Weather Statement	BMX	Bibb, Blount, Jefferson, Shelby	45 min
May 7, 3:54 PM CDT	Special Weather Statement	BMX	Jefferson	51 min
May 7, 3:56 PM CDT	Flash Flood Warning	BMX	Blount	3 hr
May 7, 3:56 PM CDT	Special Weather Statement	BMX	Jefferson	49 min
May 7, 4:07 PM CDT	Special Weather Statement	BMX	Blount, St. Clair	38 min
May 7, 4:29 PM CDT	Special Weather Statement	BMX	Shelby, Talladega	46 min
May 7, 4:55 PM CDT	Special Weather Statement	BMX	Calhoun	50 min
May 7, 5:16 PM CDT	Special Weather Statement	BMX	Clay, Coosa, Talladega	44 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.