A Washington State Department of Transportation truck. Courtesy Photo

A Washington State Department of Transportation truck. Courtesy Photo

Flood, avalanche warning in effect near Snoqualmie Valley this weekend

The National Weather Service has issued a flood watch for the Snoqualmie Valley through Saturday afternoon, as excessive runoff from melting snow and heavy rainfall are expected.

Officials in Snoqualmie and North Bend are asking residents to help public works crews clear storm drains blocked by snow and ice to reduce the chance of potential flooding on roadways, as snow plows continue to clear city roads. With major and secondary roads clear, crews are working to clear local streets and asking residents to keep their cars out of the roadway.

The Floodzilla Gauge network is predicting flooding along the Snoqualmie River to peak and descend quickly, reaching its highest flows late Friday. The sum of the river’s three forks will reach flows near 6,000 cubic feet per second (cfs). Minor flooding is expected at flows of 12,000 cfs.

Flooding is forecasted to be more prominent near Carnation, where flows could reach 17,500 cfs by Friday night, producing minor to moderate flooding. The National Weather Service has also issued a flood watch for Issaquah Creek and is expecting a similar flood event to the one in 2020.

There is a possibility for another half inch of snow accumulation in the Valley Friday, according to the National Weather Service.

Pass closed with avalanche danger

The Snoqualmie Pass will be closed until at least Friday – likely Saturday – as crews with the Washington State Department of Transportation are unable to clear the area due to extreme weather conditions.

The area is seeing heavy snowfall — seeing its highest record snowfall in 20 years Jan. 3 — and the National Weather Service has issued an avalanche warning for the entire Cascade Mountain Range.

The Northwest Avalanche Center lists the Snoqualmie Pass and surrounding areas as a high risk for a potential avalanche.

This story will be updated if information changes.

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