Debris Flow in Boundary County, Idaho
Debris Flow April 7, 2017 – April 8, 2017 · Boundary County, Idaho
Where the report was made, with tornadoes recorded within 15 miles over the years.
What the National Weather Service wrote
A debris flow cut Highway 95, which is a primary route through Boundary County, near the town of Naples.
The wider storm
Saturated soil conditions across north Idaho caused by periodic heavy rain and melting snow during the month of March and into early April produced numerous debris flows and areas of small stream and field flooding. Travel in Boundary and Bonner Counties in particular was disrupted by numerous road closures due to debris flows and flooding undermining road beds during the first half of April. Many travel restrictions remained through the rest of the month with road crews unable to address the damage until soil conditions dried and stabilized.
In addition to two debris flows cutting highway 95, which is a main artery in Boundary County, at least eight secondary roads were washed out, undermined or otherwise damaged by flooding in the county.
In Bonner County at least seven secondary roads were closed in the county due to flood damage.
Began near Naples (48.5900, -116.3800).
Source: NOAA Storm Events Database, event 692054. Narratives are written by the National Weather Service forecast office that issued the report.
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