Alert archive / Alabama / Severe Thunderstorm Warnings in 2023

Severe Thunderstorm Warning 69, NWS Huntsville, AL

May 15, 2023Colbert County, Alabama

NWS Huntsville, AL issued this severe thunderstorm warning at May 15, 2023, 1:22 PM CDT for Colbert County, Alabama. It was in force for 23 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
May 15, 2023, 1:22 PM CDT (18:22 UTC)
Expired
May 15, 2023, 1:45 PM CDT
In force
23 min
Issued by
NWS Huntsville, AL
Area
Storm-based polygon
Hail
0.75 in
Wind
60.0 mph

County Colbert County, AL

The radar

The Columbus AFB radar (KGWX), 101 km from the middle of the area, began a volume at 18:40 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

Little Rock, AR (KLZK), launched 12:00Z, 6.4 hours before the alert went out and 196 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, Little Rock, AR at 12:00Z on 2023-05-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1000 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, Little Rock, AR at 12:00Z on 2023-05-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 46 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
1000 J/kg
Mixed-layer CIN
-20 J/kg
Mixed-layer LCL
1095 m above ground
0-6 km bulk shear
14 kt
0-1 km storm-relative helicity
46 m²/s²
0-3 km storm-relative helicity
45 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
May 15, 2:31 PM CDTSpecial Weather StatementHUNFranklin44 min
May 15, 3:06 PM CDTSpecial Weather StatementHUNFranklin24 min
May 15, 3:12 PM CDTSpecial Weather StatementHUNLimestone48 min
May 15, 3:21 PM CDTSpecial Weather StatementHUNJackson39 min
May 15, 3:24 PM CDTSpecial Weather StatementHUNLawrence36 min
May 15, 3:27 PM CDTSevere Thunderstorm WarningHUNLawrence, Limestone20 min
May 15, 3:33 PM CDTSpecial Weather StatementHUNMadison42 min
May 15, 3:38 PM CDTSevere Thunderstorm WarningHUNJackson, Madison27 min
May 15, 4:05 PM CDTSpecial Weather StatementHUNJackson40 min
May 15, 4:26 PM CDTSpecial Weather StatementHUNMarshall49 min
May 15, 4:29 PM CDTSpecial Weather StatementHUNDeKalb31 min
May 15, 4:50 PM CDTSpecial Weather StatementHUNDeKalb25 min
May 15, 4:55 PM CDTSpecial Weather StatementHUNCullman35 min
May 15, 5:26 PM CDTSpecial Weather StatementHUNCullman34 min
May 15, 2:33 PM CDTSpecial Weather StatementHUNLincoln42 min
May 15, 2:57 PM CDTSpecial Weather StatementHUNMoore48 min

Nearby

Severe Thunderstorm Warnings in Alabama, 2023Every severe thunderstorm warning in 2023

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.