Alert archive / Kentucky / Flash Flood Warnings in 2025

Flash Flood Warning 57, NWS Louisville, KY

May 20, 2025Allen County, Barren County, Kentucky

NWS Louisville, KY issued this flash flood warning at May 20, 2025, 6:32 PM CDT for Allen County, Barren County, Kentucky. It was in force for 90 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: May 20, 2025, 6:32 PM CDT (23:32 UTC)
Expired: May 20, 2025, 8:02 PM CDT
In force: 90 min
Issued by: NWS Louisville, KY
Area: Storm-based polygon
Flood severity: None

Counties Allen County, KY, Barren County, KY

The radar

The Nashville radar (KOHX), 81 km from the middle of the area, began a volume at 23:34 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, 11.5 hours before the alert went out and 94 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: 1162 J/kg
Mixed-layer CIN: -41 J/kg
Mixed-layer LCL: 904 m above ground
0-6 km bulk shear: 58 kt
0-1 km storm-relative helicity: 114 m²/s²
0-3 km storm-relative helicity: 137 m²/s²
Significant tornado parameter: 0.9
Supercell composite: 3.9

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 May 20, 4:37 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, May 20, 4:37 PM CDT, 1 hour 55 minutes before

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Hazardous weather outlook, May 20, 3:46 PM CDT, 2 hours 46 minutes before

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In the hours before

Special weather statement, May 20, 6:01 PM CDT, 31 minutes before

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Special weather statement, May 20, 6:15 PM CDT, 17 minutes before

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Local storm report, May 20, 6:24 PM CDT, 8 minutes before

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Local storm report, May 20, 6:25 PM CDT, 7 minutes before

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Local storm report, May 20, 6:31 PM CDT, 1 minute before

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Local storm report, May 20, 6:32 PM CDT, 0 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
May 20, 11:37 AM CDT	Areal Flood Advisory	LMK	Allen, Barren, Monroe	3 hr
May 20, 11:45 AM CDT	Severe Thunderstorm Warning	LMK	Cumberland, Metcalfe, Monroe	34 min
May 20, 1:04 PM CDT	Special Weather Statement	LMK	Garrard, Lincoln	26 min
May 20, 1:22 PM CDT	Special Weather Statement	LMK	Madison	38 min
May 20, 1:31 PM CDT	Severe Thunderstorm Warning	LMK	Garrard, Madison	29 min
May 20, 5:20 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Ohio	40 min
May 20, 5:23 PM CDT	Severe Thunderstorm Warning	LMK	Logan, Simpson, Warren	39 min
May 20, 5:25 PM CDT	Severe Thunderstorm Warning	LMK	Butler, Logan	34 min
May 20, 5:36 PM CDT	Areal Flood Advisory	LMK	Ohio	83 min
May 20, 5:46 PM CDT	Severe Thunderstorm Warning	LMK	Breckinridge, Butler, Grayson, Ohio	14 min
May 20, 6:01 PM CDT	Special Weather Statement	LMK	Barren, Metcalfe	44 min
May 20, 6:12 PM CDT	Flash Flood Warning	LMK	Warren	110 min
May 20, 6:15 PM CDT	Special Weather Statement	LMK	Allen, Barren, Edmonson, Simpson, Warren	45 min
May 20, 6:33 PM CDT	Severe Thunderstorm Warning	LMK	Allen, Barren, Monroe	30 min
May 20, 6:38 PM CDT	Severe Thunderstorm Warning	LMK	Hardin, Hart, Larue, Nelson	38 min
May 20, 6:45 PM CDT	Areal Flood Advisory	LMK	Allen, Simpson	77 min

Nearby

Flash Flood Warnings in Kentucky, 2025 Every flash flood warning in 2025

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.