Alert archive / Alabama / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 16, NWS Huntsville, AL

March 18, 2013Colbert County, Franklin County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Mar 18, 2013, 10:51 AM CDT for Colbert County, Franklin 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: Mar 18, 2013, 10:51 AM CDT (15:51 UTC)
Expired: Mar 18, 2013, 11:15 AM CDT
In force: 24 min
Issued by: NWS Huntsville, AL
Area: Storm-based polygon

Counties Colbert County, AL, Franklin County, AL

The radar

The Columbus AFB radar (KGWX), 88 km from the middle of the area, began a volume at 15:55 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 18, 8:09 AM CDT	Severe Thunderstorm Watch	SPC	7 hr

The nearest sounding before it

Birmingham, AL (KBMX), launched 12:00Z, 3.9 hours before the alert went out and 182 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: 196 J/kg
Mixed-layer CIN: -139 J/kg
Mixed-layer LCL: 520 m above ground
0-6 km bulk shear: 42 kt
0-1 km storm-relative helicity: 298 m²/s²
0-3 km storm-relative helicity: 281 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.8

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 18, 6:29 AM CDT, 4 hours 22 minutes earlier.

Area forecast discussion, Mar 18, 6:29 AM CDT, 4 hours 22 minutes before

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Hazardous weather outlook, Mar 18, 4:49 AM CDT, 6 hours 2 minutes before

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In the hours before

Special weather statement, Mar 18, 8:59 AM CDT, 1 hour 52 minutes before

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Special weather statement, Mar 18, 9:19 AM CDT, 1 hour 32 minutes before

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Special weather statement, Mar 18, 9:42 AM CDT, 1 hour 9 minutes before

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Special weather statement, Mar 18, 10:12 AM CDT, 39 minutes before

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Special weather statement, Mar 18, 10:20 AM CDT, 31 minutes before

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Special weather statement, Mar 18, 10:39 AM CDT, 12 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 18, 7:55 AM CDT	Special Weather Statement	HUN	Jackson	35 min
Mar 18, 8:20 AM CDT	Special Weather Statement	HUN	Limestone	40 min
Mar 18, 8:52 AM CDT	Special Weather Statement	HUN	Madison	23 min
Mar 18, 9:19 AM CDT	Special Weather Statement	HUN	Lauderdale	26 min
Mar 18, 10:20 AM CDT	Special Weather Statement	HUN	Colbert	40 min
Mar 18, 10:39 AM CDT	Special Weather Statement	HUN	Colbert	36 min
Mar 18, 11:24 AM CDT	Special Weather Statement	HUN	Lauderdale	21 min
Mar 18, 11:40 AM CDT	Special Weather Statement	HUN	Lawrence	35 min
Mar 18, 11:50 AM CDT	Special Weather Statement	HUN	Franklin	25 min
Mar 18, 12:14 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone	31 min
Mar 18, 12:20 PM CDT	Special Weather Statement	HUN	Colbert, Franklin	40 min
Mar 18, 12:34 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	26 min
Mar 18, 12:44 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Madison	31 min
Mar 18, 12:59 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lawrence	31 min
Mar 18, 1:21 PM CDT	Special Weather Statement	HUN	Madison	39 min
Mar 18, 1:27 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lawrence, Morgan	33 min
Mar 18, 1:32 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale	43 min
Mar 18, 1:33 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lawrence	27 min
Mar 18, 1:38 PM CDT	Special Weather Statement	HUN	Jackson	37 min
Mar 18, 1:59 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lauderdale, Lawrence	31 min
Mar 18, 2:00 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Morgan	30 min
Mar 18, 2:11 PM CDT	Severe Thunderstorm Warning	HUN	Limestone	19 min
Mar 18, 2:14 PM CDT	Special Weather Statement	HUN	Jackson	31 min
Mar 18, 2:15 PM CDT	Severe Thunderstorm Warning	HUN	Limestone, Morgan	30 min
Mar 18, 2:27 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Morgan	48 min
Mar 18, 2:54 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, Lawrence, Limestone, Madison, Morgan	36 min
Mar 18, 3:08 PM CDT	Special Weather Statement	HUN	Jackson	22 min
Mar 18, 3:12 PM CDT	Severe Thunderstorm Warning	HUN	Cullman, DeKalb, Jackson, Limestone, Madison, Marshall and 1 more	48 min
Mar 18, 3:15 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	15 min
Mar 18, 3:27 PM CDT	Severe Thunderstorm Warning	HUN	Madison	33 min
Mar 18, 3:32 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	28 min
Mar 18, 3:41 PM CDT	Tornado Warning	HUN	DeKalb, Jackson	19 min
Mar 18, 3:45 PM CDT	Tornado Warning	HUN	DeKalb	15 min
Mar 18, 3:52 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	38 min
Mar 18, 3:59 PM CDT	Tornado Warning	HUN	DeKalb	31 min
Mar 18, 3:59 PM CDT	Tornado Warning	HUN	DeKalb	31 min
Mar 18, 8:35 AM CDT	Special Weather Statement	HUN	Lincoln, Moore	25 min
Mar 18, 8:59 AM CDT	Special Weather Statement	HUN	Lincoln, Moore	31 min
Mar 18, 9:42 AM CDT	Special Weather Statement	HUN	Marion	48 min
Mar 18, 10:12 AM CDT	Special Weather Statement	HUN	Franklin	18 min
Mar 18, 11:13 AM CDT	Special Weather Statement	HUN	Franklin	32 min
Mar 18, 12:14 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln, Moore	31 min
Mar 18, 2:59 PM CDT	Special Weather Statement	HUN	Lincoln	46 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2013 Every severe thunderstorm warning in 2013

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.