Flash Flood — Bonneville, Idaho

2023-05-23 · near Idaho Falls, Bonneville, Idaho

Event narrative

One to 3 inches of rain fell in two hours in the Idaho Falls area resulting in extreme street flooding in downtown Idaho Falls with underpasses with several feet of water and cars submerged in water. This occurred at the 17th Street underpass. Multiple homes with severe flooding and inches of water in their basements. Extreme damage to dozens of homes. Flooding in Idaho Falls City Hall and the Mountain America Events Center during a high school graduation ceremony. Several homes in the 30 to 80 thousand dollar damage amount from their home flooding.

Wider weather episode

Widespread severe weather with strong winds, large hail, and very heavy rains occurred on the 23rd in the Snake River Plain.

View location on OpenStreetMap → (43.5524, -112.0300)

Source: NOAA Storm Events Database, event_id 1104629. Narrative written by the NWS forecast office that issued the report.