Flash Flood in Navajo County, Arizona

Flash Flood August 18, 2021 · Navajo County, Arizona

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

What the National Weather Service wrote

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.

The wider storm

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).

Began near Forest Lake (36.3667, -110.3848).

Source: NOAA Storm Events Database, event 983558. Narratives are written by the National Weather Service forecast office that issued the report.

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