Alert archive / Kentucky / Snow Squall Warnings in 2023

Snow Squall Warning 1, NWS Louisville, KY

December 18, 2023Madison County, Kentucky

NWS Louisville, KY issued this snow squall warning at Dec 18, 2023, 3:22 PM EST for Madison County, Kentucky. 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
Dec 18, 2023, 3:22 PM EST (20:22 UTC)
Expired
Dec 18, 2023, 3:45 PM EST
In force
23 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon

County Madison County, KY

The radar

The Jackson,KY radar (KJKL), 86 km from the middle of the area, began a volume at 20:22 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

Roanoke, VA (KRNK), launched 12:00Z, 8.4 hours before the alert went out and 426 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, Roanoke, VA at 12:00Z on 2023-12-18Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 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, Roanoke, VA at 12:00Z on 2023-12-18The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -102 square meters per square second.19395878Sfc1 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
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
815 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
-102 m²/s²
0-3 km storm-relative helicity
-91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

The office that day

Everything else NWS Louisville, KY issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Dec 18, 2:07 PM ESTSpecial Weather StatementLMKFayette, Franklin, Woodford53 min
Dec 18, 2:22 PM ESTSpecial Weather StatementLMKMadison38 min
Dec 18, 2:28 PM ESTSpecial Weather StatementLMKBoyle, Lincoln47 min
Dec 18, 2:32 PM ESTSpecial Weather StatementLMKHarrison, Scott43 min
Dec 18, 3:02 PM ESTSpecial Weather StatementLMKMadison28 min
Dec 18, 3:16 PM ESTSpecial Weather StatementLMKFayette, Scott, Woodford44 min
Dec 18, 3:49 PM ESTSpecial Weather StatementLMKHarrison41 min
Dec 18, 3:58 PM ESTSpecial Weather StatementLMKMadison32 min

Nearby

Snow Squall Warnings in Kentucky, 2023Every snow squall 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.