Flash Flood in Coconino County, Arizona

Flash Flood August 22, 2023 · Coconino County, Arizona

$7.0M

Damage as recorded

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

What the National Weather Service wrote

Between 1 to 2.5 inches of rain fell in around two hours just east and northeast of the town of Tusayan and the South Entrance to The Grand Canyon National Park. This caused significant flooding of homes homes, buildings, and cars. Highway 64 into the GCNP was closed, shelter in place orders were put into place, and children were stuck in their school because they could not safely get home.

The wider storm

A strong ridge over the central United States and a trough draped across the West Coast put Arizona in a position to receive a moist southerly wind flow. The 12Z sounding from

measured 0.86 inches of Precipitable Water which was slightly above average for late August...adequate monsoonal moisture to fuel storms.

Began near Tusayan (35.9700, -112.1300).

Source: NOAA Storm Events Database, event 1124342. Narratives are written by the National Weather Service forecast office that issued the report.

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