Flash Flood in Grant County, Oklahoma

Flash Flood June 18, 2026 · Grant County, Oklahoma

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Significant roadway flooding occurred along the Oklahoma Highway 74 corridor south of Lamont and the Salt Fork River. Several roads in the area were closed. A video showing significant flooding along Comanche Road, west of Oklahoma Highway 74, was also shared. The event time is approximate.

The wider storm

A strong and persistent warm air advection pattern atop a surface front fostered scattered thunderstorm activity for most of the morning into the afternoon on the 18th across north-central Oklahoma. Sufficient wind shear and (elevated) instability allowed for occasional large hail concern with the strongest thunderstorms. Multiple rounds of heavy rainfall across Grant County, Oklahoma also led to flooding.

Began near Salt Fork (36.6368, -97.6060).

Source: NOAA Storm Events Database, event 1355780. Narratives are written by the National Weather Service forecast office that issued the report.

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