Alert archive / Kentucky / Severe Thunderstorm Warnings in 2020

Severe Thunderstorm Warning 177, NWS Louisville, KY

October 23, 2020Anderson County, Shelby County, Spencer County, Kentucky

NWS Louisville, KY issued this severe thunderstorm warning at Oct 23, 2020, 6:58 PM EDT for Anderson County, Shelby County, Spencer County, Kentucky. It was in force for 32 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, 6:58 PM EDT (22:58 UTC)
Expired
Oct 23, 2020, 7:30 PM EDT
In force
32 min
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Tornado
Possible
Hail
1.0 in
Wind
60.0 mph

Counties Anderson County, KY, Shelby County, KY, Spencer County, KY

The radar

The Louisville radar (KLVX), 69 km from the middle of the area, began a volume at 22:57 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

Cncnati-Daytn, OH (KILN), launched 12:00Z, 11.0 hours before the alert went out and 191 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, Cncnati-Daytn, OH at 12:00Z on 2020-10-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 204 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, Cncnati-Daytn, OH at 12:00Z on 2020-10-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity -15 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
204 J/kg
Mixed-layer CIN
-91 J/kg
Mixed-layer LCL
1014 m above ground
0-6 km bulk shear
20 kt
0-1 km storm-relative helicity
-15 m²/s²
0-3 km storm-relative helicity
56 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, 2:33 PM EDTSpecial Weather StatementLMKHardin42 min
Oct 23, 2:50 PM EDTSpecial Weather StatementLMKNelson25 min
Oct 23, 2:53 PM EDTSpecial Weather StatementLMKTrimble37 min
Oct 23, 3:03 PM EDTSpecial Weather StatementLMKEdmonson27 min
Oct 23, 3:10 PM EDTSevere Thunderstorm WarningLMKAnderson, Nelson, Washington35 min
Oct 23, 3:36 PM EDTSpecial Weather StatementLMKTaylor24 min
Oct 23, 3:38 PM EDTSpecial Weather StatementLMKAnderson37 min
Oct 23, 3:45 PM EDTSevere Thunderstorm WarningLMKAnderson, Jessamine, Mercer, Woodford30 min
Oct 23, 3:57 PM EDTSpecial Weather StatementLMKTaylor33 min
Oct 23, 4:40 PM EDTSpecial Weather StatementLMKCasey, Lincoln35 min
Oct 23, 4:44 PM EDTSpecial Weather StatementLMKClark, Fayette, Madison46 min
Oct 23, 4:44 PM EDTSevere Thunderstorm WarningLMKLogan31 min
Oct 23, 4:55 PM EDTSpecial Weather StatementLMKNicholas35 min
Oct 23, 5:06 PM EDTSpecial Weather StatementLMKLogan24 min
Oct 23, 5:35 PM EDTSpecial Weather StatementLMKLogan40 min
Oct 23, 5:59 PM EDTSpecial Weather StatementLMKBullitt31 min
Oct 23, 6:06 PM EDTSpecial Weather StatementLMKMeade39 min
Oct 23, 6:14 PM EDTSevere Thunderstorm WarningLMKHenry, Oldham, Trimble31 min
Oct 23, 6:25 PM EDTSpecial Weather StatementLMKMonroe35 min
Oct 23, 6:27 PM EDTSpecial Weather StatementLMKBullitt48 min
Oct 23, 6:30 PM EDTSpecial Weather StatementLMKButler, Logan, Ohio45 min
Oct 23, 6:38 PM EDTSevere Thunderstorm WarningLMKJefferson25 min
Oct 23, 6:45 PM EDTSevere Thunderstorm WarningLMKHenry, Trimble15 min
Oct 23, 6:51 PM EDTSpecial Weather StatementLMKSpencer24 min
Oct 23, 6:55 PM EDTAreal Flood AdvisoryLMKBullitt110 min
Oct 23, 7:04 PM EDTSpecial Weather StatementLMKMeade26 min
Oct 23, 7:09 PM EDTSpecial Weather StatementLMKGrayson21 min
Oct 23, 7:29 PM EDTSpecial Weather StatementLMKWoodford31 min
Oct 23, 7:59 PM EDTSpecial Weather StatementLMKFayette, Woodford31 min
Oct 23, 4:37 PM EDTSpecial Weather StatementLMKDubois38 min
Oct 23, 4:51 PM EDTSevere Thunderstorm WarningLMKDubois39 min
Oct 23, 4:53 PM EDTSpecial Weather StatementLMKHarrison37 min
Oct 23, 5:04 PM EDTSevere Thunderstorm WarningLMKClark, Floyd, Harrison, Washington26 min
Oct 23, 5:18 PM EDTSpecial Weather StatementLMKOrange42 min
Oct 23, 5:29 PM EDTSevere Thunderstorm WarningLMKClark, Floyd31 min
Oct 23, 5:36 PM EDTSpecial Weather StatementLMKFloyd24 min
Oct 23, 5:57 PM EDTSpecial Weather StatementLMKClark48 min
Oct 23, 6:00 PM EDTSpecial 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.