An upper level trough pushed a moist cold front through northeast Washington during the day of November 15th, and a cold unstable air mass in the cusp of this trough after the frontal passage promoted frequent snow showers over the northeast Washington mountains. In the valleys precipitation was mostly rain or minor accumulating snow, but in the mountains above 4000 feet elevation heavy…
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Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.
The episode as NWS OTX wrote it up.
An upper level trough pushed a moist cold front through northeast Washington during the day of November 15th, and a cold unstable air mass in the cusp of this trough after the frontal passage promoted frequent snow showers over the northeast Washington mountains. In the valleys precipitation was mostly rain or minor accumulating snow, but in the mountains above 4000 feet elevation heavy accumulations of snow were noted.
The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Spokane, WA wrote its last area forecast discussion before the first event at Nov 14, 2:47 PM PST, 18 hours 13 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
3 heavy snow. Local standard time, as filed.
The Bunchgrass Meadow SNOTEL site recorded 14 inches of new snow accumulation.
The Quartz Peak SNOTEL site recorded 7 inches of new snow accumulation.
The 49 North Ski Resort reported 28 inches of new snow accumulation over the course of two days.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Washington in 2017Every state in 2017This day in weather historyWarnings in Washington, November 2017
NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 725830, 725831, 725832.