Debris Flow — San Juan, Utah

2021-08-26 · near Grand Co Arpt, San Juan, Utah

Event narrative

Water and rock flowed across Utah Highway 191 at mile marker 110 near Hole in the Rock.

Wider weather episode

A shortwave trough progressed across the region as subtropical moisture streamed in from the south. As a result, scattered showers and thunderstorms developed across eastern Utah. Moderate instability produced some stronger thunderstorms that generated severe wind gusts as well as heavy rain which led to isolated debris flows.

View location on OpenStreetMap → (38.4000, -109.4500)

Source: NOAA Storm Events Database, event_id 970670. Narrative written by the NWS forecast office that issued the report.