Alert archive / Alabama / Flash Flood Warnings in 2024

Flash Flood Warning 16, NWS Huntsville, AL

September 14, 2024Colbert County, Lauderdale County, Lawrence County, Alabama

NWS Huntsville, AL issued this flash flood warning at Sep 14, 2024, 6:08 AM CDT for Colbert County, Lauderdale County, Lawrence 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, 6:08 AM CDT (11:08 UTC)
Expired
Sep 14, 2024, 9:15 AM CDT
In force
3 hr
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Flood severity
None

Counties Colbert County, AL, Lauderdale County, AL, Lawrence County, AL

The radar

The Columbus AFB radar (KGWX), 113 km from the middle of the area, began a volume at 11:10 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, 11.1 hours before the alert went out and 186 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, Birmingham, AL at 00:00Z on 2024-09-14Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 774 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, Birmingham, AL at 00:00Z on 2024-09-14The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 72 square meters per square second.193958Sfc1 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
774 J/kg
Mixed-layer CIN
-25 J/kg
Mixed-layer LCL
706 m above ground
0-6 km bulk shear
35 kt
0-1 km storm-relative helicity
72 m²/s²
0-3 km storm-relative helicity
98 m²/s²
Significant tornado parameter
0.2
Supercell composite
1.9

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, 11 hours 31 minutes earlier.

Area forecast discussion, Sep 13, 6:37 PM CDT, 11 hours 31 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, 7:29 AM CDTFlash Flood WarningHUNCullman, Morgan3 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.