Alert archive / Alabama / Flash Flood Warnings in 2008

Flash Flood Warning 28, NWS Huntsville, AL

August 2, 2008Lauderdale County, Alabama

NWS Huntsville, AL issued this flash flood warning at Aug 2, 2008, 6:25 PM CDT for Lauderdale County, Alabama. It was in force for 3 hr. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: Aug 2, 2008, 6:25 PM CDT (23:25 UTC)
Expired: Aug 2, 2008, 9:08 PM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

County Lauderdale County, AL

The radar

The Columbus AFB radar (KGWX), 128 km from the middle of the area, began a volume at 23:27 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 12:00Z, 11.4 hours before the alert went out and 167 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: 2260 J/kg
Mixed-layer CIN: -61 J/kg
Mixed-layer LCL: 1011 m above ground
0-6 km bulk shear: 34 kt
0-1 km storm-relative helicity: 107 m²/s²
0-3 km storm-relative helicity: 100 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 6.7

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood 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 flash flood warning went out at Aug 2, 6:00 PM CDT, 25 minutes earlier.

Area forecast discussion, Aug 2, 6:00 PM CDT, 25 minutes before

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Hazardous weather outlook, Aug 2, 5:50 PM CDT, 35 minutes before

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In the hours before

Local storm report, Aug 2, 5:09 PM CDT, 1 hour 16 minutes before

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Local storm report, Aug 2, 5:13 PM CDT, 1 hour 12 minutes before

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Special weather statement, Aug 2, 5:27 PM CDT, 58 minutes before

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Local storm report, Aug 2, 5:35 PM CDT, 50 minutes before

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Local storm report, Aug 2, 5:42 PM CDT, 43 minutes before

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Special weather statement, Aug 2, 5:45 PM CDT, 40 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
Aug 2, 2:20 PM CDT	Severe Thunderstorm Warning	HUN	Madison	24 min
Aug 2, 2:26 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence	34 min
Aug 2, 2:37 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	38 min
Aug 2, 2:44 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale, Limestone	31 min
Aug 2, 2:58 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence	32 min
Aug 2, 3:12 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	48 min
Aug 2, 3:24 PM CDT	Severe Thunderstorm Warning	HUN	Madison	36 min
Aug 2, 3:47 PM CDT	Flash Flood Warning	HUN	Lawrence	88 min
Aug 2, 3:51 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence	24 min
Aug 2, 3:58 PM CDT	Severe Thunderstorm Warning	HUN	Madison	47 min
Aug 2, 4:05 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	25 min
Aug 2, 4:12 PM CDT	Flash Flood Warning	HUN	Madison	90 min
Aug 2, 4:18 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Lawrence	27 min
Aug 2, 4:27 PM CDT	Severe Thunderstorm Warning	HUN	Madison	33 min
Aug 2, 4:36 PM CDT	Severe Thunderstorm Warning	HUN	Cullman	24 min
Aug 2, 4:39 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	36 min
Aug 2, 4:41 PM CDT	Severe Thunderstorm Warning	HUN	Madison, Marshall, Morgan	34 min
Aug 2, 4:46 PM CDT	Flash Flood Warning	HUN	Colbert, Lauderdale, Lawrence	4 hr
Aug 2, 4:53 PM CDT	Severe Thunderstorm Warning	HUN	Cullman	37 min
Aug 2, 5:11 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	34 min
Aug 2, 6:12 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	33 min
Aug 2, 6:14 PM CDT	Severe Thunderstorm Warning	HUN	Colbert, Franklin	31 min
Aug 2, 6:31 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	29 min

Nearby

Flash Flood Warnings in Alabama, 2008 Every flash flood 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.