Flash Flood — Navajo, Arizona

2021-08-18 · near Forest Lake, Navajo, Arizona

Event narrative

Pictures on social media show at least 10 inches of water flowing in Dinnebito Wash near Hardrock. The water had been flowing for at least 2 hours. Road going into Hardrock were not passible due to the water flowing over the roadways.

Wider weather episode

Deep monsoon moisture over Arizona and an approaching trough of low pressure from the Pacific Northwest helped produce local flash flooding and large hail. Thunderstorms reformed during the evening over Yavapai County which continued flash flooding in smaller streams and rapid rises on The Verde River (a main stem river).

View location on OpenStreetMap → (36.3667, -110.3848)

Source: NOAA Storm Events Database, event_id 983558. Narrative written by the NWS forecast office that issued the report.