Alert archive / Alabama / Flash Flood Warnings in 2013

Flash Flood Warning 24, NWS Huntsville, AL

July 11, 2013Cullman County, Lawrence County, Morgan County, Alabama

NWS Huntsville, AL issued this flash flood warning at Jul 11, 2013, 12:41 AM CDT for Cullman County, Lawrence County, Morgan 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: Jul 11, 2013, 12:41 AM CDT (05:41 UTC)
Expired: Jul 11, 2013, 3:30 AM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

Counties Cullman County, AL, Lawrence County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 105 km from the middle of the area, began a volume at 05:44 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, 5.7 hours before the alert went out and 134 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: 114 J/kg
Mixed-layer CIN: -199 J/kg
Mixed-layer LCL: 1451 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 53 m²/s²
0-3 km storm-relative helicity: 75 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

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 Jul 11, 12:39 AM CDT, 2 minutes earlier.

Area forecast discussion, Jul 11, 12:39 AM CDT, 2 minutes before

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Hazardous weather outlook, Jul 10, 11:35 PM CDT, 1 hour 6 minutes before

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In the hours before

Special weather statement, Jul 10, 11:16 PM CDT, 1 hour 25 minutes before

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Special weather statement, Jul 10, 11:49 PM CDT, 52 minutes before

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Local storm report, Jul 10, 11:53 PM CDT, 48 minutes before

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Special weather statement, Jul 11, 12:11 AM CDT, 30 minutes before

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Local storm report, Jul 11, 12:22 AM CDT, 19 minutes before

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Local storm report, Jul 11, 12:24 AM CDT, 17 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
Jul 10, 8:10 PM CDT	Severe Thunderstorm Warning	HUN	Madison	35 min
Jul 10, 8:30 PM CDT	Severe Thunderstorm Warning	HUN	Jackson	30 min
Jul 10, 8:44 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison	46 min
Jul 10, 9:12 PM CDT	Severe Thunderstorm Warning	HUN	Jackson, Madison, Marshall	33 min
Jul 10, 9:26 PM CDT	Flash Flood Warning	HUN	Jackson	3 hr
Jul 10, 9:30 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Madison, Marshall	30 min
Jul 10, 9:32 PM CDT	Special Weather Statement	HUN	Lauderdale	43 min
Jul 10, 9:45 PM CDT	Severe Thunderstorm Warning	HUN	Lauderdale	30 min
Jul 10, 9:58 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb, Jackson, Marshall	32 min
Jul 10, 10:01 PM CDT	Severe Thunderstorm Warning	HUN	Madison	29 min
Jul 10, 10:28 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	47 min
Jul 10, 10:28 PM CDT	Severe Thunderstorm Warning	HUN	DeKalb	32 min
Jul 10, 10:31 PM CDT	Special Weather Statement	HUN	Limestone, Marshall	44 min
Jul 10, 10:39 PM CDT	Special Weather Statement	HUN	DeKalb	36 min
Jul 10, 10:45 PM CDT	Tornado Warning	HUN	Marshall	30 min
Jul 10, 10:49 PM CDT	Flash Flood Warning	HUN	Jackson, Limestone, Madison, Marshall, Morgan	3 hr
Jul 10, 10:54 PM CDT	Flash Flood Warning	HUN	Colbert, Lauderdale	3 hr
Jul 10, 11:06 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	39 min
Jul 10, 11:10 PM CDT	Special Weather Statement	HUN	Cullman, Morgan	50 min
Jul 10, 11:11 PM CDT	Tornado Warning	HUN	DeKalb, Marshall	49 min
Jul 10, 11:16 PM CDT	Special Weather Statement	HUN	Marshall	44 min
Jul 10, 11:49 PM CDT	Special Weather Statement	HUN	Lawrence	41 min
Jul 11, 12:11 AM CDT	Special Weather Statement	HUN	Morgan	34 min
Jul 11, 12:16 AM CDT	Areal Flood Warning	HUN	DeKalb, Jackson, Madison	6 hr
Jul 11, 1:42 AM CDT	Areal Flood Warning	HUN	Jackson, Limestone, Madison, Marshall, Morgan	3 hr
Jul 11, 2:56 AM CDT	Special Weather Statement	HUN	Franklin	49 min
Jul 11, 3:25 AM CDT	Areal Flood Warning	HUN	Cullman, Lawrence, Morgan	3 hr
Jul 11, 4:43 AM CDT	Areal Flood Warning	HUN	Jackson, Madison, Morgan	6 hr
Jul 11, 6:31 AM CDT	River Flood Warning	HUN	Madison	9 hr
Jul 11, 2:23 PM CDT	Special Weather Statement	HUN	Lawrence	37 min
Jul 11, 3:22 PM CDT	Special Weather Statement	HUN	Lawrence	23 min
Jul 11, 4:11 PM CDT	Special Weather Statement	HUN	Colbert	49 min
Jul 11, 5:00 PM CDT	Special Weather Statement	HUN	Colbert	45 min
Jul 11, 5:55 PM CDT	Special Weather Statement	HUN	Limestone	50 min
Jul 11, 6:05 PM CDT	Special Weather Statement	HUN	Franklin	25 min
Jul 11, 6:31 PM CDT	Special Weather Statement	HUN	Franklin	29 min
Jul 11, 6:44 PM CDT	Special Weather Statement	HUN	Limestone, Madison	46 min
Jul 10, 8:00 PM CDT	Special Weather Statement	HUN	Lincoln	30 min
Jul 10, 8:13 PM CDT	Severe Thunderstorm Warning	HUN	Franklin, Lincoln, Moore	32 min
Jul 10, 9:39 PM CDT	Severe Thunderstorm Warning	HUN	Lincoln	36 min
Jul 11, 12:25 AM CDT	Areal Flood Warning	HUN	Franklin, Lincoln, Moore	6 hr

Nearby

Flash Flood Warnings in Alabama, 2013 Every flash flood 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.