Alert archive / Alabama / Flash Flood Warnings in 2025

Flash Flood Warning 16, NWS Huntsville, AL

April 23, 20256 counties in Alabama

NWS Huntsville, AL issued this flash flood warning at Apr 23, 2025, 4:39 PM CDT for 6 counties in 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: Apr 23, 2025, 4:39 PM CDT (21:39 UTC)
Expired: Apr 23, 2025, 7:45 PM CDT
In force: 3 hr
Issued by: NWS Huntsville, AL
Area: Storm-based polygon
Flood severity: None

Counties Cullman County, AL, DeKalb County, AL, Lawrence County, AL, Madison County, AL, Marshall County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 72 km from the middle of the area, began a volume at 21:40 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, 9.7 hours before the alert went out and 187 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: 85 J/kg
Mixed-layer CIN: -24 J/kg
Mixed-layer LCL: 774 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 33 m²/s²
0-3 km storm-relative helicity: 73 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 Apr 23, 12:03 PM CDT, 4 hours 36 minutes earlier.

Area forecast discussion, Apr 23, 12:03 PM CDT, 4 hours 36 minutes before

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In the hours before

Special weather statement, Apr 23, 3:28 PM CDT, 1 hour 11 minutes before

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Special weather statement, Apr 23, 3:35 PM CDT, 1 hour 4 minutes before

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Special weather statement, Apr 23, 4:07 PM CDT, 32 minutes before

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Special weather statement, Apr 23, 4:09 PM CDT, 30 minutes before

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Special weather statement, Apr 23, 4:14 PM CDT, 25 minutes before

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Special weather statement, Apr 23, 4:14 PM CDT, 25 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 23, 3:28 PM CDT	Special Weather Statement	HUN	Cullman	47 min
Apr 23, 3:35 PM CDT	Special Weather Statement	HUN	Morgan	40 min
Apr 23, 3:39 PM CDT	Severe Thunderstorm Warning	HUN	Madison, Marshall, Morgan	20 min
Apr 23, 4:07 PM CDT	Special Weather Statement	HUN	Morgan	53 min
Apr 23, 4:14 PM CDT	Special Weather Statement	HUN	Cullman	46 min
Apr 23, 4:14 PM CDT	Special Weather Statement	HUN	Cullman	46 min
Apr 23, 4:42 PM CDT	Severe Thunderstorm Warning	HUN	Lawrence, Limestone, Morgan	18 min
Apr 23, 4:54 PM CDT	Special Weather Statement	HUN	DeKalb	51 min
Apr 23, 4:59 PM CDT	Special Weather Statement	HUN	Marshall, Morgan	46 min
Apr 23, 5:02 PM CDT	Special Weather Statement	HUN	Lawrence	58 min
Apr 23, 5:22 PM CDT	Special Weather Statement	HUN	Colbert	68 min
Apr 23, 5:50 PM CDT	Special Weather Statement	HUN	Marshall	40 min
Apr 23, 6:01 PM CDT	Special Weather Statement	HUN	Colbert, Lauderdale	59 min
Apr 23, 3:46 PM CDT	Severe Thunderstorm Warning	HUN	Franklin	13 min
Apr 23, 4:09 PM CDT	Special Weather Statement	HUN	Franklin	51 min
Apr 23, 5:34 PM CDT	Special Weather Statement	HUN	Lincoln	41 min

Nearby

Flash Flood Warnings in Alabama, 2025 Every flash flood warning in 2025

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.