Alert archive / Alabama / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 379, NWS Birmingham, AL

July 13, 2008Montgomery County, Pike County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jul 13, 2008, 2:05 PM CDT for Montgomery County, Pike County, Alabama. It was in force for 40 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: Jul 13, 2008, 2:05 PM CDT (19:05 UTC)
Expired: Jul 13, 2008, 2:45 PM CDT
In force: 40 min
Issued by: NWS Birmingham, AL
Area: Storm-based polygon

Counties Montgomery County, AL, Pike County, AL

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 7.1 hours before the alert went out and 146 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: 1991 J/kg
Mixed-layer CIN: -33 J/kg
Mixed-layer LCL: 830 m above ground
0-6 km bulk shear: 17 kt
0-1 km storm-relative helicity: 32 m²/s²
0-3 km storm-relative helicity: 14 m²/s²
Significant tornado parameter: 0.2
Supercell composite: 1.7

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 Jul 13, 12:45 PM CDT, 1 hour 20 minutes earlier.

Area forecast discussion, Jul 13, 12:45 PM CDT, 1 hour 20 minutes before

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Hazardous weather outlook, Jul 13, 1:15 PM CDT, 50 minutes before

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In the hours before

Local storm report, Jul 13, 12:18 PM CDT, 1 hour 47 minutes before

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Special weather statement, Jul 13, 12:20 PM CDT, 1 hour 45 minutes before

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Special weather statement, Jul 13, 12:51 PM CDT, 1 hour 14 minutes before

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Special weather statement, Jul 13, 12:55 PM CDT, 1 hour 10 minutes before

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Special weather statement, Jul 13, 1:10 PM CDT, 55 minutes before

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Special weather statement, Jul 13, 1:49 PM CDT, 16 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
Jul 13, 11:46 AM CDT	Severe Thunderstorm Warning	BMX	Cherokee	29 min
Jul 13, 1:43 PM CDT	Severe Thunderstorm Warning	BMX	Elmore, Macon, Tallapoosa	47 min
Jul 13, 6:38 PM CDT	Severe Thunderstorm Warning	BMX	Autauga, Lowndes	37 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2008 Every severe thunderstorm warning in 2008

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.