Alert archive / Alabama / Severe Thunderstorm Warnings in 2014

Severe Thunderstorm Warning 105, NWS Huntsville, AL

October 6, 2014Lawrence County, Limestone County, Morgan County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Oct 6, 2014, 4:03 PM CDT for Lawrence County, Limestone County, Morgan County, Alabama. It was in force for 27 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
Oct 6, 2014, 4:03 PM CDT (21:03 UTC)
Expired
Oct 6, 2014, 4:30 PM CDT
In force
27 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon

Counties Lawrence County, AL, Limestone County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 96 km from the middle of the area, began a volume at 21:03 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

Birmingham, AL (KBMX), launched 12:00Z, 9.1 hours before the alert went out and 159 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-pSkew-T log-p diagram, Birmingham, AL at 12:00Z on 2014-10-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Birmingham, AL at 12:00Z on 2014-10-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 150 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1252 m above ground
0-6 km bulk shear
38 kt
0-1 km storm-relative helicity
150 m²/s²
0-3 km storm-relative helicity
133 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 Huntsville, AL wrote its last area forecast discussion before this severe thunderstorm warning went out at Oct 6, 12:58 PM CDT, 3 hours 5 minutes earlier.

Area forecast discussion, Oct 6, 12:58 PM CDT, 3 hours 5 minutes before
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Hazardous weather outlook, Oct 6, 2:45 PM CDT, 1 hour 18 minutes before
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In the hours before

Special weather statement, Oct 6, 3:26 PM CDT, 37 minutes before
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Special weather statement, Oct 6, 3:43 PM CDT, 20 minutes before
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Special weather statement, Oct 6, 3:49 PM CDT, 14 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Oct 6, 3:26 PM CDTSpecial Weather StatementHUNLimestone34 min
Oct 6, 3:43 PM CDTSpecial Weather StatementHUNFranklin32 min
Oct 6, 3:49 PM CDTSpecial Weather StatementHUNLawrence26 min
Oct 6, 4:16 PM CDTSpecial Weather StatementHUNMadison29 min
Oct 6, 4:25 PM CDTSpecial Weather StatementHUNLimestone35 min
Oct 6, 4:55 PM CDTSevere Thunderstorm WarningHUNCullman50 min
Oct 6, 4:58 PM CDTSpecial Weather StatementHUNMadison47 min
Oct 6, 5:34 PM CDTSpecial Weather StatementHUNCullman41 min
Oct 6, 5:35 PM CDTSpecial Weather StatementHUNJackson25 min
Oct 6, 5:42 PM CDTSevere Thunderstorm WarningHUNCullman33 min
Oct 6, 5:44 PM CDTSevere Thunderstorm WarningHUNCullman, Marshall, Morgan20 min
Oct 6, 5:48 PM CDTSevere Thunderstorm WarningHUNJackson27 min
Oct 6, 6:10 PM CDTSpecial Weather StatementHUNFranklin35 min
Oct 6, 6:11 PM CDTSevere Thunderstorm WarningHUNCullman34 min
Oct 6, 6:14 PM CDTSevere Thunderstorm WarningHUNJackson46 min
Oct 6, 6:26 PM CDTSpecial Weather StatementHUNMarshall49 min
Oct 6, 6:35 PM CDTSevere Thunderstorm WarningHUNColbert, Franklin25 min
Oct 6, 6:38 PM CDTSevere Thunderstorm WarningHUNFranklin37 min
Oct 6, 6:52 PM CDTSevere Thunderstorm WarningHUNDeKalb8 min
Oct 6, 4:44 PM CDTSpecial Weather StatementHUNFranklin46 min
Oct 6, 5:54 PM CDTSpecial Weather StatementHUNFranklin36 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2014Every severe thunderstorm warning in 2014

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.