Alert archive / Alabama / Flash Flood Warnings in 2024

Flash Flood Warning 17, NWS Huntsville, AL

September 14, 2024Cullman County, Morgan County, Alabama

NWS Huntsville, AL issued this flash flood warning at Sep 14, 2024, 7:29 AM CDT for Cullman 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
Sep 14, 2024, 7:29 AM CDT (12:29 UTC)
Expired
Sep 14, 2024, 10:30 AM CDT
In force
3 hr
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties Cullman County, AL, Morgan County, AL

The radar

The Northeast Alabama radar (KHTX), 100 km from the middle of the area, began a volume at 12:32 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

Peachtre/Fal Fld, GA (KFFC), launched 12:00Z, 0.5 hours before the alert went out and 241 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-pSkew-T log-p diagram, Peachtre/Fal Fld, GA at 12:00Z on 2024-09-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 18 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Peachtre/Fal Fld, GA at 12:00Z on 2024-09-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 61 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
18 J/kg
Mixed-layer CIN
-52 J/kg
Mixed-layer LCL
568 m above ground
0-6 km bulk shear
8 kt
0-1 km storm-relative helicity
61 m²/s²
0-3 km storm-relative helicity
114 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 Sep 13, 6:37 PM CDT, 12 hours 52 minutes earlier.

Area forecast discussion, Sep 13, 6:37 PM CDT, 12 hours 52 minutes before
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The office that day

Everything else NWS Huntsville, AL issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 13, 7:52 PM CDTSpecial Weather StatementHUNCullman38 min
Sep 13, 8:54 PM CDTFlash Flood WarningHUNCullman2 hr
Sep 13, 11:05 PM CDTAreal Flood WarningHUNCullman, Lawrence, Morgan5 hr
Sep 14, 6:08 AM CDTFlash Flood WarningHUNColbert, Lauderdale, Lawrence3 hr
Sep 14, 7:37 AM CDTAreal Flood WarningHUNColbert, Cullman, Franklin, Lauderdale, Lawrence, Limestone and 1 more5 hr
Sep 14, 10:24 AM CDTRiver Flood WarningHUNLawrence3 days
Sep 14, 6:48 PM CDTAreal Flood WarningHUNColbert, Lauderdale, Lawrence3 hr

Nearby

Flash Flood Warnings in Alabama, 2024Every flash flood warning in 2024

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.