Alert archive / Alabama / Flash Flood Warnings in 2010

Flash Flood Warning 57, NWS Huntsville, AL

November 30, 2010Madison County, Alabama

NWS Huntsville, AL issued this flash flood warning at Nov 30, 2010, 3:19 AM CST for Madison County, Alabama. It was in force for 5 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: Nov 30, 2010, 3:19 AM CST (09:19 UTC)
Expired: Nov 30, 2010, 8:15 AM CST
In force: 5 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

County Madison County, AL

The radar

The Northeast Alabama radar (KHTX), 46 km from the middle of the area, began a volume at 09:19 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 00:00Z, 9.3 hours before the alert went out and 177 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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 517 m above ground
0-6 km bulk shear: 59 kt
0-1 km storm-relative helicity: 540 m²/s²
0-3 km storm-relative helicity: 634 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 1.6

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 Nov 29, 11:51 PM CST, 3 hours 28 minutes earlier.

Area forecast discussion, Nov 29, 11:51 PM CST, 3 hours 28 minutes before

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Hazardous weather outlook, Nov 29, 10:15 PM CST, 5 hours 4 minutes before

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In the hours before

Special weather statement, Nov 30, 12:17 AM CST, 3 hours 2 minutes before

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Special weather statement, Nov 30, 2:01 AM CST, 1 hour 18 minutes before

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Local storm report, Nov 30, 2:32 AM CST, 47 minutes before

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Local storm report, Nov 30, 2:59 AM CST, 20 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
Nov 30, 12:17 AM CST	Special Weather Statement	HUN	Colbert, Franklin, Lauderdale	43 min
Nov 30, 12:43 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Franklin, Lawrence	47 min
Nov 30, 12:59 AM CST	Severe Thunderstorm Warning	HUN	Colbert, Lauderdale	25 min
Nov 30, 1:20 AM CST	Severe Thunderstorm Warning	HUN	Lauderdale, Lawrence, Limestone	28 min
Nov 30, 1:46 AM CST	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Madison	44 min
Nov 30, 2:01 AM CST	Special Weather Statement	HUN	Morgan	44 min
Nov 30, 2:37 AM CST	Severe Thunderstorm Warning	HUN	Limestone, Madison, Morgan	38 min
Nov 30, 3:51 AM CST	Special Weather Statement	HUN	Jackson	54 min
Nov 30, 4:07 AM CST	Special Weather Statement	HUN	Morgan	38 min
Nov 30, 4:17 AM CST	Flash Flood Warning	HUN	Morgan	5 hr
Nov 30, 4:26 AM CST	Severe Thunderstorm Warning	HUN	Cullman	49 min
Nov 30, 4:47 AM CST	Special Weather Statement	HUN	Madison	43 min
Nov 30, 5:34 AM CST	Special Weather Statement	HUN	Jackson	41 min
Nov 30, 5:37 AM CST	Flash Flood Warning	HUN	Cullman	2 hr
Nov 30, 6:00 AM CST	Special Weather Statement	HUN	Madison	45 min
Nov 30, 6:06 AM CST	Special Weather Statement	HUN	Cullman	39 min
Nov 30, 7:21 AM CST	Special Weather Statement	HUN	Jackson, Marshall	54 min
Nov 30, 7:46 AM CST	Special Weather Statement	HUN	Jackson	44 min
Nov 30, 7:54 AM CST	Special Weather Statement	HUN	DeKalb	66 min
Nov 30, 8:15 AM CST	Areal Flood Warning	HUN	Madison	6 hr
Nov 30, 8:33 AM CST	Severe Thunderstorm Warning	HUN	DeKalb	27 min
Nov 30, 9:00 AM CST	Severe Thunderstorm Warning	HUN	DeKalb	15 min
Nov 30, 9:55 AM CST	River Flood Warning	HUN	Madison	21 hr
Nov 30, 1:53 PM CST	River Flood Warning	HUN	Jackson, Madison, Marshall	64 hr
Nov 30, 2:20 PM CST	Areal Flood Warning	HUN	Madison	6 hr
Nov 30, 2:09 AM CST	Severe Thunderstorm Warning	HUN	Lincoln, Moore	51 min
Nov 30, 2:59 AM CST	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	46 min
Nov 30, 5:22 AM CST	Special Weather Statement	HUN	Franklin	23 min
Nov 30, 6:50 AM CST	Special Weather Statement	HUN	Franklin	25 min

Nearby

Flash Flood Warnings in Alabama, 2010 Every flash flood warning in 2010

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.