Alert archive / Alabama / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 41, NWS Birmingham, AL

March 12, 2010Barbour County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Mar 12, 2010, 1:23 PM CST for Barbour County, Alabama. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Mar 12, 2010, 1:23 PM CST (19:23 UTC)
Expired: Mar 12, 2010, 1:46 PM CST
In force: 23 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

County Barbour County, AL

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 7.4 hours before the alert went out and 187 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: 16 J/kg
Mixed-layer CIN: -363 J/kg
Mixed-layer LCL: 515 m above ground
0-6 km bulk shear: 70 kt
0-1 km storm-relative helicity: 231 m²/s²
0-3 km storm-relative helicity: 408 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning 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 severe thunderstorm warning went out at Mar 12, 12:27 PM CST, 56 minutes earlier.

Area forecast discussion, Mar 12, 12:27 PM CST, 56 minutes before

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Hazardous weather outlook, Mar 12, 12:30 PM CST, 53 minutes before

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In the hours before

Local storm report, Mar 12, 10:23 AM CST, 3 hours before

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Special weather statement, Mar 12, 10:52 AM CST, 2 hours 31 minutes before

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Special weather statement, Mar 12, 10:55 AM CST, 2 hours 28 minutes before

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Local storm report, Mar 12, 10:57 AM CST, 2 hours 26 minutes before

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Special weather statement, Mar 12, 12:39 PM CST, 44 minutes before

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Special weather statement, Mar 12, 1:14 PM CST, 9 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
Mar 11, 9:07 PM CST	River Flood Warning	BMX	Chambers, Elmore, Macon, Randolph, Tallapoosa	12 hr
Mar 12, 1:37 AM CST	Severe Thunderstorm Warning	BMX	Lamar, Marion	38 min
Mar 12, 1:59 AM CST	Severe Thunderstorm Warning	BMX	Lamar	31 min
Mar 12, 2:22 AM CST	Severe Thunderstorm Warning	BMX	Lamar	53 min
Mar 12, 2:34 AM CST	Severe Thunderstorm Warning	BMX	Marion, Winston	56 min
Mar 12, 2:39 AM CST	Flash Flood Warning	BMX	Lamar	3 hr
Mar 12, 2:47 AM CST	Severe Thunderstorm Warning	BMX	Sumter	58 min
Mar 12, 3:02 AM CST	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Marion	46 min
Mar 12, 3:15 AM CST	Severe Thunderstorm Warning	BMX	Marion, Winston	45 min
Mar 12, 3:25 AM CST	Severe Thunderstorm Warning	BMX	Fayette, Pickens, Tuscaloosa	65 min
Mar 12, 3:37 AM CST	Severe Thunderstorm Warning	BMX	Fayette, Pickens, Tuscaloosa	53 min
Mar 12, 3:42 AM CST	Severe Thunderstorm Warning	BMX	Walker, Winston	63 min
Mar 12, 3:51 AM CST	Severe Thunderstorm Warning	BMX	Greene, Hale, Tuscaloosa	39 min
Mar 12, 3:57 AM CST	Severe Thunderstorm Warning	BMX	Hale, Marengo, Perry	48 min
Mar 12, 4:16 AM CST	Severe Thunderstorm Warning	BMX	Walker, Winston	44 min
Mar 12, 4:30 AM CST	Severe Thunderstorm Warning	BMX	Bibb, Hale, Jefferson, Tuscaloosa	45 min
Mar 12, 4:43 AM CST	Severe Thunderstorm Warning	BMX	Winston	17 min
Mar 12, 4:49 AM CST	Severe Thunderstorm Warning	BMX	Dallas, Perry	41 min
Mar 12, 5:15 AM CST	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, Shelby, Tuscaloosa	45 min
Mar 12, 5:23 AM CST	Severe Thunderstorm Warning	BMX	Autauga, Bibb, Chilton, Dallas, Perry	52 min
Mar 12, 5:44 AM CST	Flash Flood Warning	BMX	Autauga, Bibb, Chilton, Jefferson, Shelby	86 min
Mar 12, 6:01 AM CST	Severe Thunderstorm Warning	BMX	Chilton, Coosa	29 min
Mar 12, 6:35 AM CST	River Flood Warning	BMX	Montgomery	25 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2010 Every severe thunderstorm warning in 2010

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.