The moisture tap has moved off to the east as a cold front passed through the area overnight and is now affecting weather in the Idaho Panhandle with scattered snow and rain showers. There is also a weak weather trough extending from the Gulf of Alaska down to Northern California that will lead to bands of light to moderate snow showers for late today through most of Friday.
By Friday night, a much larger Pacific weather system moves into the Pacific Northwest with widespread snowfall amounts of 1-3 inches likely with heavier amounts in the Cascades, Waterville Plateau, and into the rising terrain just north of the Columbia River around the Brewster area. These locations could see upwards of 3-5 inches. Higher amounts will fall along the Cascade Crest and upper valleys around Lake Wenatchee, Plain and Stehekin. Preliminary snowfall totals suggest the potential for 6-9 inches in those areas. We have a 30% chance of scattered showers today and tonight with partly cloudy skies expected for Friday. The chance for snow goes up to 80% on Friday night and a 100% chance of snow on Saturday.
Snow turns to rain on Saturday night and Sunday with a 60% chance of precipitation. With rain in the weather forecast along with mild temperatures, we could see significant snow melt and the potential for minor flooding.