Alert archive / Alabama / Severe Thunderstorm Warnings in 2005

Severe Thunderstorm Warning 65, NWS Huntsville, AL

April 21, 2005Lauderdale County, Limestone County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at Apr 21, 2005, 11:23 PM CDT for Lauderdale County, Limestone County, Alabama. It was in force for 52 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: Apr 21, 2005, 11:23 PM CDT (04:23 UTC)
Expired: Apr 22, 2005, 12:15 AM CDT
In force: 52 min
Issued by: NWS Huntsville, AL
Area: Counties, with a storm outline in the text

Counties Lauderdale County, AL, Limestone County, AL

The radar

The Northeast Alabama radar (KHTX), 113 km from the middle of the area, began a volume at 04:26 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

Nashville Metro, TN (KBNA), launched 00:00Z, 4.4 hours before the alert went out and 156 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: 255 J/kg
Mixed-layer CIN: -28 J/kg
Mixed-layer LCL: 1911 m above ground
0-6 km bulk shear: 13 kt
0-1 km storm-relative helicity: 23 m²/s²
0-3 km storm-relative helicity: 57 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 Apr 21, 10:00 PM CDT, 1 hour 23 minutes earlier.

Area forecast discussion, Apr 21, 10:00 PM CDT, 1 hour 23 minutes before

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Hazardous weather outlook, Apr 21, 9:45 PM CDT, 1 hour 38 minutes before

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In the hours before

Local storm report, Apr 21, 7:02 PM CDT, 4 hours 21 minutes before

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Local storm report, Apr 21, 10:14 PM CDT, 1 hour 9 minutes before

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Local storm report, Apr 21, 10:37 PM CDT, 46 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
Apr 21, 8:43 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	47 min
Apr 21, 9:20 PM CDT	Flash Flood Warning	HUN	Lauderdale	3 hr
Apr 21, 9:27 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	48 min
Apr 21, 9:40 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence	50 min
Apr 21, 10:10 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	50 min
Apr 21, 10:21 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone	39 min
Apr 21, 10:31 PM CDT	Severe Thunderstorm Warning	HUN	Morgan	29 min
Apr 21, 11:38 PM CDT	Severe Thunderstorm Warning	HUN	Madison, Morgan	52 min
Apr 22, 5:25 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	35 min
Apr 22, 5:40 PM CDT	Severe Thunderstorm Warning	HUN	Limestone	50 min
Apr 22, 6:00 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	45 min
Apr 22, 6:09 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	51 min
Apr 22, 6:37 PM CDT	Severe Thunderstorm Warning	HUN	Marshall	30 min
Apr 22, 6:44 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	31 min
Apr 22, 5:55 PM CDT	Severe Thunderstorm Warning	HUN	Moore	35 min
Apr 22, 5:56 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln	34 min
Apr 22, 6:41 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	25 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2005 Every severe thunderstorm warning in 2005

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.