Flash Flood — Coconino, Arizona

2023-08-22 · near Tusayan, Coconino, Arizona

$7.0M

Property damage

Event narrative

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.

Wider weather episode

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.

View location on OpenStreetMap → (35.9700, -112.1300)

Source: NOAA Storm Events Database, event_id 1124342. Narrative written by the NWS forecast office that issued the report.