Alert archive / Kentucky / Flash Flood Warnings in 2026

Flash Flood Warning 132, NWS Louisville, KY

August 15, 2026Nicholas County, Kentucky

NWS Louisville, KY issued this flash flood warning at Aug 15, 2026, 5:52 PM EDT for Nicholas County, Kentucky. It was in force for 5 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
Aug 15, 2026, 5:52 PM EDT (21:52 UTC)
Expired
Aug 15, 2026, 10:45 PM EDT
In force
5 hr
Issued by
NWS Louisville, KY
Area
Storm-based polygon
Flood severity
None

County Nicholas County, KY

The radar

The Jackson,KY radar (KJKL), 103 km from the middle of the area, began a volume at 21:54 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, 9.9 hours before the alert went out and 123 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 2026-08-15Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 313 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 2026-08-15The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 64 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
313 J/kg
Mixed-layer CIN
-154 J/kg
Mixed-layer LCL
728 m above ground
0-6 km bulk shear
27 kt
0-1 km storm-relative helicity
64 m²/s²
0-3 km storm-relative helicity
91 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The office that day

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

IssuedProductOfficeCountiesLasted
Aug 15, 5:23 PM EDTSpecial Weather StatementLMKNicholas37 min
Aug 15, 5:38 PM EDTAreal Flood AdvisoryLMKBourbon, Harrison, Nicholas5 hr
Aug 15, 5:57 PM EDTSpecial Weather StatementLMKNicholas33 min
Aug 15, 6:05 PM EDTSpecial Weather StatementLMKTrimble25 min
Aug 15, 6:31 PM EDTSpecial Weather StatementLMKTrimble29 min
Aug 15, 7:33 PM EDTSpecial Weather StatementLMKHarrison27 min
Aug 15, 7:42 PM EDTSevere Thunderstorm WarningLMKHarrison33 min

Nearby

Flash Flood Warnings in Kentucky, 2026Every flash flood warning in 2026

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.