Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 170, NWS Louisville, KY

October 23, 2020Logan County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Oct 23, 2020, 3:44 PM CDT for Logan County, Kentucky. It was in force for 31 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
Oct 23, 2020, 3:44 PM CDT (20:44 UTC)
Expired
Oct 23, 2020, 4:15 PM CDT
In force
31 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Hail
1.25 in
Wind
60.0 mph

County Logan County, KY

The radar

The Ft Campbell radar (KHPX), 39 km from the middle of the area, began a volume at 20:46 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, 8.7 hours before the alert went out and 85 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, Nashville Metro, TN at 12:00Z on 2020-10-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 228 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, Nashville Metro, TN at 12:00Z on 2020-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 207 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
228 J/kg
Mixed-layer CIN
-73 J/kg
Mixed-layer LCL
873 m above ground
0-6 km bulk shear
23 kt
0-1 km storm-relative helicity
207 m²/s²
0-3 km storm-relative helicity
199 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
Oct 23, 1:33 PM CDTSpecial Weather StatementLMKHardin42 min
Oct 23, 1:50 PM CDTSpecial Weather StatementLMKNelson25 min
Oct 23, 1:53 PM CDTSpecial Weather StatementLMKTrimble37 min
Oct 23, 2:03 PM CDTSpecial Weather StatementLMKEdmonson27 min
Oct 23, 2:10 PM CDTSevere Thunderstorm WarningLMKAnderson, Nelson, Washington35 min
Oct 23, 2:36 PM CDTSpecial Weather StatementLMKTaylor24 min
Oct 23, 2:38 PM CDTSpecial Weather StatementLMKAnderson37 min
Oct 23, 2:45 PM CDTSevere Thunderstorm WarningLMKAnderson, Jessamine, Mercer, Woodford30 min
Oct 23, 2:57 PM CDTSpecial Weather StatementLMKTaylor33 min
Oct 23, 3:40 PM CDTSpecial Weather StatementLMKCasey, Lincoln35 min
Oct 23, 3:44 PM CDTSpecial Weather StatementLMKClark, Fayette, Madison46 min
Oct 23, 3:55 PM CDTSpecial Weather StatementLMKNicholas35 min
Oct 23, 4:06 PM CDTSpecial Weather StatementLMKLogan24 min
Oct 23, 4:35 PM CDTSpecial Weather StatementLMKLogan40 min
Oct 23, 4:59 PM CDTSpecial Weather StatementLMKBullitt31 min
Oct 23, 5:06 PM CDTSpecial Weather StatementLMKMeade39 min
Oct 23, 5:14 PM CDTSevere Thunderstorm WarningLMKHenry, Oldham, Trimble31 min
Oct 23, 5:25 PM CDTSpecial Weather StatementLMKMonroe35 min
Oct 23, 5:27 PM CDTSpecial Weather StatementLMKBullitt48 min
Oct 23, 5:30 PM CDTSpecial Weather StatementLMKButler, Logan, Ohio45 min
Oct 23, 5:38 PM CDTSevere Thunderstorm WarningLMKJefferson25 min
Oct 23, 5:45 PM CDTSevere Thunderstorm WarningLMKHenry, Trimble15 min
Oct 23, 5:51 PM CDTSpecial Weather StatementLMKSpencer24 min
Oct 23, 5:55 PM CDTAreal Flood AdvisoryLMKBullitt110 min
Oct 23, 5:58 PM CDTSevere Thunderstorm WarningLMKAnderson, Shelby, Spencer32 min
Oct 23, 6:04 PM CDTSpecial Weather StatementLMKMeade26 min
Oct 23, 6:09 PM CDTSpecial Weather StatementLMKGrayson21 min
Oct 23, 6:29 PM CDTSpecial Weather StatementLMKWoodford31 min
Oct 23, 6:59 PM CDTSpecial Weather StatementLMKFayette, Woodford31 min
Oct 23, 3:37 PM CDTSpecial Weather StatementLMKDubois38 min
Oct 23, 3:51 PM CDTSevere Thunderstorm WarningLMKDubois39 min
Oct 23, 3:53 PM CDTSpecial Weather StatementLMKHarrison37 min
Oct 23, 4:04 PM CDTSevere Thunderstorm WarningLMKClark, Floyd, Harrison, Washington26 min
Oct 23, 4:18 PM CDTSpecial Weather StatementLMKOrange42 min
Oct 23, 4:29 PM CDTSevere Thunderstorm WarningLMKClark, Floyd31 min
Oct 23, 4:36 PM CDTSpecial Weather StatementLMKFloyd24 min
Oct 23, 4:57 PM CDTSpecial Weather StatementLMKClark48 min
Oct 23, 5:00 PM CDTSpecial Weather StatementLMKScott, Washington45 min

Nearby

Severe Thunderstorm Warnings in Kentucky, 2020Every severe thunderstorm warning in 2020

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.