Alert archive / Alabama / Severe Thunderstorm Warnings in 2007

Severe Thunderstorm Warning 136, NWS Birmingham, AL

June 24, 2007Jefferson County, Shelby County, Alabama

NWS Birmingham, AL issued this severe thunderstorm warning at Jun 24, 2007, 4:46 PM CDT for Jefferson County, Shelby County, Alabama. It was in force for 18 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 24, 2007, 4:46 PM CDT (21:46 UTC)
Expired: Jun 24, 2007, 5:04 PM CDT
In force: 18 min
Issued by: NWS Birmingham, AL
Area: Counties, with a storm outline in the text

Counties Jefferson County, AL, Shelby County, AL

The radar

The Birmingham radar (KBMX), 26 km from the middle of the area, began a volume at 21:47 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 9.8 hours before the alert went out and 212 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: 2 J/kg
Mixed-layer CIN: -298 J/kg
Mixed-layer LCL: 1884 m above ground
0-6 km bulk shear: 16 kt
0-1 km storm-relative helicity: -15 m²/s²
0-3 km storm-relative helicity: -2 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 24, 3:00 PM CDT, 1 hour 46 minutes earlier.

Area forecast discussion, Jun 24, 3:00 PM CDT, 1 hour 46 minutes before

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Hazardous weather outlook, Jun 24, 1:50 PM CDT, 2 hours 56 minutes before

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In the hours before

Special weather statement, Jun 24, 3:53 PM CDT, 53 minutes before

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Local storm report, Jun 24, 4:20 PM CDT, 26 minutes before

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Special weather statement, Jun 24, 4:36 PM CDT, 10 minutes before

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Special weather statement, Jun 24, 4:39 PM CDT, 7 minutes before

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Nearby

Severe Thunderstorm Warnings in Alabama, 2007 Every severe thunderstorm warning in 2007

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; radar from the NEXRAD Level II archive.