Debris Flow in Ferry County, Washington

Debris Flow October 16, 2016 · Ferry County, Washington

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

A member of the public noted a small rock slide on SR 20 West bound at milepost 318 near Sherman Pass summit.

The wider storm

An intense low pressure system passed through Western Washington and up into Southern British Columbia. As it did so it swept a very intense occluded front over Eastern Washington. The strong wind associated with the passing front brought some trees down and caused some power outages in Eastern Washington in addition to heavy rainfall at times which caused debris flows in some of the mountain locations more prone to it.

Began near Torboy (48.6073, -118.4797).

Source: NOAA Storm Events Database, event 656089. Narratives are written by the National Weather Service forecast office that issued the report.

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