A prolonged period of moderate to heavy snow caused difficult travel conditions and sporadic power outages across central Idaho. While lower elevations experienced a mixture of snow, rain and freezing rain, the combination of rain and snow melt led to water on roadways in a few places.
Every event with a place to put it; 2 filed by county or forecast zone are drawn at its center, in a lighter ring. Tap one for its entry below.
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 MSO wrote it up.
A prolonged period of moderate to heavy snow caused difficult travel conditions and sporadic power outages across central Idaho. While lower elevations experienced a mixture of snow, rain and freezing rain, the combination of rain and snow melt led to water on roadways in a few places.
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 Missoula, MT wrote its last area forecast discussion before the first event at Dec 28, 3:14 AM PST, 9 hours 46 minutes earlier.
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</html>The national radar mosaic for the moment the first event began.
1 heavy snow, 1 winter storm. Local standard time, as filed.
About 3 feet of snow was reported at Elk River with power outages in the area. For the lower elevations, freezing rain was reported. Also there was minor flooding due to blocked culverts in portions of western Clearwater County.
In Elk City, heavy snow brought down power lines and trees causing an extended power outage that lasted for three days from 11 am PST on the 28th to 10 am PST on the 30th. Heavy wet snow also caused several power outages in the Lower Middlefork, Lowell, Selway and Tahoe areas. The Idaho Transportation Department reported 37 inches at the Powell Shed. Around 22 inches of snow was reported at Lolo Pass, between 14 and 18 inches of snow fell in Elk City and the Dixie COOP reported 11 inches over 3 days. For the lower elevations, Kooskia saw 6 inches of heavy wet snow while freezing rain was reported on highway 12 with several trees down near Lowell.
After NWS Directive 10-1605, the rules offices file Storm Data by.
Every storm in Idaho in 2017Every state in 2017This day in weather historyWarnings in Idaho, December 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 2026-10-01. Each event’s entry at NCEI: 726361, 726362.