Alert archive / Ohio / Flash Flood Warnings in 2025

Flash Flood Warning 30, NWS Wilmington, OH

July 10, 2025Delaware County, Franklin County, Ohio

NWS Wilmington, OH issued this flash flood warning at Jul 10, 2025, 3:04 PM EDT for Delaware County, Franklin County, Ohio. It was in force for 91 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: Jul 10, 2025, 3:04 PM EDT (19:04 UTC)
Expired: Jul 10, 2025, 4:35 PM EDT
In force: 91 min
Issued by: NWS Wilmington, OH
Area: Storm-based polygon
Flood severity: None

Counties Delaware County, OH, Franklin County, OH

The radar

The Cincinnati radar (KILN), 105 km from the middle of the area, began a volume at 19:06 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

Pittsburgh, PA (KPIT), launched 12:00Z, 7.1 hours before the alert went out and 249 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: 7 J/kg
Mixed-layer CIN: -144 J/kg
Mixed-layer LCL: 955 m above ground
0-6 km bulk shear: 20 kt
0-1 km storm-relative helicity: 26 m²/s²
0-3 km storm-relative helicity: 28 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 Wilmington, OH wrote its last area forecast discussion before this flash flood warning went out at Jul 9, 7:35 PM EDT, 19 hours 29 minutes earlier.

Area forecast discussion, Jul 9, 7:35 PM EDT, 19 hours 29 minutes before

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The office that day

Everything else NWS Wilmington, OH issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jul 9, 8:40 PM EDT	Areal Flood Advisory	ILN	Pike	3 hr
Jul 10, 2:23 PM EDT	Areal Flood Advisory	ILN	Delaware, Franklin	2 hr

Nearby

Flash Flood Warnings in Ohio, 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.