Alert archive / Alabama / Severe Thunderstorm Warnings in 2009

Severe Thunderstorm Warning 314, NWS Birmingham, AL

June 13, 2009Fayette County, Tuscaloosa County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 13, 2009, 4:06 AM CDT for Fayette County, Tuscaloosa County, Alabama. It was in force for 24 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: Jun 13, 2009, 4:06 AM CDT (09:06 UTC)
Expired: Jun 13, 2009, 4:30 AM CDT
In force: 24 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Fayette County, AL, Tuscaloosa County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 00:00Z, 9.1 hours before the alert went out and 87 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: 251 J/kg
Mixed-layer CIN: -172 J/kg
Mixed-layer LCL: 1650 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 52 m²/s²
0-3 km storm-relative helicity: 32 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 Jun 13, 3:09 AM CDT, 57 minutes earlier.

Area forecast discussion, Jun 13, 3:09 AM CDT, 57 minutes before

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Hazardous weather outlook, Jun 13, 12:00 AM CDT, 4 hours 6 minutes before

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In the hours before

Local storm report, Jun 12, 11:21 PM CDT, 4 hours 45 minutes before

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Local storm report, Jun 12, 11:34 PM CDT, 4 hours 32 minutes before

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Local storm report, Jun 12, 11:40 PM CDT, 4 hours 26 minutes before

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Local storm report, Jun 12, 11:50 PM CDT, 4 hours 16 minutes before

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Local storm report, Jun 12, 11:57 PM CDT, 4 hours 9 minutes before

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Local storm report, Jun 12, 11:58 PM CDT, 4 hours 8 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
Jun 12, 7:03 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Pickens	42 min
Jun 12, 7:14 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Marion, Walker, Winston	46 min
Jun 12, 7:20 PM CDT	Tornado Warning	BMX	Fayette	25 min
Jun 12, 7:23 PM CDT	Severe Thunderstorm Warning	BMX	Fayette, Lamar, Pickens, Tuscaloosa, Walker	52 min
Jun 12, 7:26 PM CDT	Tornado Warning	BMX	Pickens	34 min
Jun 12, 7:27 PM CDT	Flash Flood Warning	BMX	Fayette, Lamar, Pickens	63 min
Jun 12, 7:39 PM CDT	Severe Thunderstorm Warning	BMX	Blount, Jefferson, Walker, Winston	51 min
Jun 12, 7:47 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Jefferson, Pickens, Sumter, Tuscaloosa, Walker	43 min
Jun 12, 7:54 PM CDT	Severe Thunderstorm Warning	BMX	Lee, Macon	36 min
Jun 12, 8:14 PM CDT	Severe Thunderstorm Warning	BMX	Bibb, Jefferson, St. Clair, Shelby, Tuscaloosa	46 min
Jun 12, 8:23 PM CDT	Severe Thunderstorm Warning	BMX	Greene, Hale, Sumter	52 min
Jun 12, 8:36 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Bibb, Chilton, Clay, Coosa, Jefferson and 4 more	39 min
Jun 12, 8:58 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Chambers, Chilton, Clay, Coosa, Elmore and 2 more	47 min
Jun 13, 8:13 AM CDT	Areal Flood Advisory	BMX	Jefferson	2 hr

Nearby

Severe Thunderstorm Warnings in Alabama, 2009 Every severe thunderstorm warning in 2009

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.