Flash Flood in Ada County, Idaho
Flash Flood June 6, 2023 · Ada County, Idaho
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
Thunderstorms produced heavy rain across portions of the Lower Treasure Valley, including the city of Boise. Social media, weather spotter, and emergency manager reports indicated localized flooding.
The wider storm
Thunderstorms developed across southwest Idaho early Tuesday evening and produced
heavy rain and strong winds across portions of the Lower Treasure Valley, including the city of Boise. Social media, weather spotters, and emergency manager reports indicated flooding of many streets in downtown Boise and the North-End Boise area. Water overwhelmed storm water drainages and flowed onto sidewalks and lawns. Water up to two feet deep left several vehicles stranded in the downtown area. The Connector, a major commuter route to downtown Boise was flooded, as were some apartments, and several buildings on the Boise State University campus. Rainfall rates over one inch an hour occurred with localized rainfall totals up to 1.85 inches between 6 PM and 10 PM MDT.
Blowing dust reducing visibility and high winds formed with a strong outflow boundary near the Nevada border around 5pm MDT. Wind damage was reported from Grandview, ID to downtown Meridian, ID.
Began near Boise (43.6000, -116.2000).
Source: NOAA Storm Events Database, event 1108868. Narratives are written by the National Weather Service forecast office that issued the report.
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