Storm totals April 14-15.
As of Wednesday, April 12, 2017
(WEDNESDAY, APRIL 12) -- For Thursday into Friday, April 13-14, rain showers will turn into snow, according to the National Weather Service office in Missoula.
The weather summary calls for abundant rain showers on Thursday, with the main focus along the Idaho-Montana border. Cooler air moves in Thursday night into Friday morning, bringing multiple inches of mountain pass snow, and there is potential for intense snow showers into the day Friday that could bring short-lived accumulations down to valleys. Snow showers linger into Saturday morning.
Thursday’s rain showers are forecast to bring amounts in the 0.5- to 0.75-inch range during the course of the day for Idaho and Clearwater counties.
The strongest storms could have small hail, a few strikes of lightning, and gusty downdraft winds of 30 to 40 mph.
A quick-moving system will bring enhanced snow showers and a few inches of snow to mountain passes Thursday night into Friday, among these Lolo Pass on the Idaho-Montana border
White Bird Grade near Grangeville could also see a couple inches of snow, and would be one of the earliest to see snow during early Friday a.m. hours, as the system moves eastward throughout the day.
Intense snow showers during the afternoon could bring brief accumulations down to all valley floors, impacting visibility and travel for those caught driving into brief, intense snow.
Showers decrease in coverage and intensity Saturday morning, April 15.