Flash Flood in Tuolumne County, California

Flash Flood July 20, 2014 · Tuolumne County, California

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

What the National Weather Service wrote

Stream bank erosion, with some scouring, rilling, and sheet erosion. Sediment deposited in creek bed at multiple road/creek crossings. There was also float-able debris that was later removed. Road was over-topped at multiple locations. Estimated Granite Creek Basin flow of 1200 CFS, a very high amount for the basin. Flash flood duration of 2 hours and 30 minutes.

The wider storm

An upper level disturbance combined with monsoonal moisture to create thunderstorms with heavy rains and some large hail. Debris flows, rock slides and local roadway flooding occurred in a few locations, including the Rim Fire burn area.

Began near Oakland Rec Camp (37.9000, -119.9700).

Source: NOAA Storm Events Database, event 537670. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.