Alert archive / Kentucky / Flash Flood Warnings in 2026

Flash Flood Warning 103, NWS Louisville, KY

July 12, 2026Grayson County, Kentucky

NWS Louisville, KY issued this flash flood warning at Jul 12, 2026, 9:28 AM CDT for Grayson County, Kentucky. It was in force for 4 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: Jul 12, 2026, 9:28 AM CDT (14:28 UTC)
Expired: Jul 12, 2026, 1:00 PM CDT
In force: 4 hr
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

County Grayson County, KY

The radar

The Louisville radar (KLVX), 67 km from the middle of the area, began a volume at 14:28 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, 2.5 hours before the alert went out and 311 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 283 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 596 m above ground
0-6 km bulk shear: 11 kt
0-1 km storm-relative helicity: 11 m²/s²
0-3 km storm-relative helicity: -5 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this flash flood warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Louisville, KY wrote its last area forecast discussion before this flash flood warning went out at Jul 12, 6:13 AM CDT, 3 hours 15 minutes earlier.

Area forecast discussion, Jul 12, 6:13 AM CDT, 3 hours 15 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
Jul 11, 8:10 PM CDT	Areal Flood Advisory	LMK	Barren, Cumberland, Metcalfe, Monroe	3 hr
Jul 11, 8:42 PM CDT	Areal Flood Advisory	LMK	Cumberland, Metcalfe, Monroe	3 hr
Jul 11, 11:36 PM CDT	Areal Flood Advisory	LMK	Boyle, Breckinridge, Bullitt, Hancock, Hardin, Larue and 6 more	4 hr
Jul 11, 11:56 PM CDT	Flash Flood Warning	LMK	Hardin, Nelson	3 hr
Jul 12, 1:37 AM CDT	Areal Flood Advisory	LMK	Clark, Fayette, Garrard, Jessamine, Madison	3 hr
Jul 12, 6:29 AM CDT	Areal Flood Advisory	LMK	Hart, Larue	4 hr
Jul 12, 6:54 AM CDT	Areal Flood Advisory	LMK	Ohio	3 hr
Jul 12, 7:45 AM CDT	Areal Flood Advisory	LMK	Butler	5 hr
Jul 12, 7:53 AM CDT	Areal Flood Advisory	LMK	Marion	3 hr
Jul 12, 8:25 AM CDT	Areal Flood Advisory	LMK	Green, Hart	3 hr
Jul 12, 8:38 AM CDT	Flash Flood Warning	LMK	Hart	4 hr
Jul 12, 8:53 AM CDT	Areal Flood Advisory	LMK	Grayson, Hardin, Ohio	3 hr
Jul 12, 9:38 AM CDT	Areal Flood Advisory	LMK	Boyle, Casey, Lincoln, Mercer	4 hr
Jul 12, 10:08 AM CDT	Flash Flood Warning	LMK	Boyle, Mercer	3 hr
Jul 12, 10:14 AM CDT	Areal Flood Advisory	LMK	Edmonson, Hart	4 hr
Jul 12, 10:41 AM CDT	Areal Flood Advisory	LMK	Washington	3 hr
Jul 12, 10:47 AM CDT	Flash Flood Warning	LMK	Lincoln	3 hr
Jul 12, 10:50 AM CDT	Areal Flood Advisory	LMK	Edmonson, Warren	3 hr
Jul 12, 11:21 AM CDT	Areal Flood Advisory	LMK	Bourbon, Fayette, Scott	3 hr
Jul 12, 12:53 PM CDT	Areal Flood Advisory	LMK	Franklin, Henry, Shelby	3 hr
Jul 12, 12:57 PM CDT	Areal Flood Warning	LMK	Grayson	2 hr
Jul 12, 12:57 PM CDT	Areal Flood Warning	LMK	Grayson, Hart	2 hr
Jul 12, 1:32 PM CDT	Areal Flood Advisory	LMK	Barren	3 hr
Jul 12, 1:56 PM CDT	Flash Flood Warning	LMK	Barren	3 hr
Jul 12, 2:52 PM CDT	Areal Flood Advisory	LMK	Barren, Cumberland, Metcalfe	115 min
Jul 12, 5:33 PM CDT	Areal Flood Advisory	LMK	Clinton, Cumberland	3 hr

Nearby

Flash Flood Warnings in Kentucky, 2026 Every 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.