Alert archive / Alabama / Severe Thunderstorm Warnings in 2008

Severe Thunderstorm Warning 27, NWS Huntsville, AL

March 15, 2008Lawrence County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 15, 2008, 7:35 AM CDT for Lawrence County, Alabama. It was in force for 25 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 15, 2008, 7:35 AM CDT (12:35 UTC)
Expired: Mar 15, 2008, 8:00 AM CDT
In force: 25 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

County Lawrence County, AL

The radar

The Columbus AFB radar (KGWX), 117 km from the middle of the area, began a volume at 12:35 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 watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Mar 15, 7:02 AM CDT	Severe Thunderstorm Watch	SPC	4 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 0.6 hours before the alert went out and 157 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: 1121 J/kg
Mixed-layer CIN: -89 J/kg
Mixed-layer LCL: 509 m above ground
0-6 km bulk shear: 66 kt
0-1 km storm-relative helicity: 393 m²/s²
0-3 km storm-relative helicity: 622 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 7.3

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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Mar 15, 3:04 AM CDT, 4 hours 31 minutes earlier.

Area forecast discussion, Mar 15, 3:04 AM CDT, 4 hours 31 minutes before

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Hazardous weather outlook, Mar 15, 4:46 AM CDT, 2 hours 49 minutes before

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In the hours before

Special weather statement, Mar 15, 1:47 AM CDT, 5 hours 48 minutes before

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Special weather statement, Mar 15, 2:39 AM CDT, 4 hours 56 minutes before

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Local storm report, Mar 15, 2:40 AM CDT, 4 hours 55 minutes before

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Special weather statement, Mar 15, 2:53 AM CDT, 4 hours 42 minutes before

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Special weather statement, Mar 15, 3:35 AM CDT, 4 hours before

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Special weather statement, Mar 15, 7:27 AM CDT, 8 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Mar 15, 1:57 AM CDT	Severe Thunderstorm Warning	HUN	Cullman	48 min
Mar 15, 3:08 AM CDT	Severe Thunderstorm Warning	HUN	Marshall	37 min
Mar 15, 6:24 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale	35 min
Mar 15, 7:02 AM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin	43 min
Mar 15, 2:03 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	42 min
Mar 15, 2:25 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Limestone, Madison, Marshall	50 min
Mar 15, 2:48 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	27 min
Mar 15, 3:10 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson	35 min
Mar 15, 3:41 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	17 min
Mar 15, 3:45 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Marshall	30 min
Mar 15, 9:01 AM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln	44 min
Mar 15, 2:15 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	30 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; radar from the NEXRAD Level II archive.