WeatherWatcher: Winter Weather Advisory 1-3 inches of snow

Saturday, February 25, 2017

The National Weather Service in Seattle has issued a Winter Weather Advisory for snow, in effect from 10pm Saturday night until 10am Sunday morning. The snow advisory is calling for 1-2 inches of snow overnight for the greater Seattle, Tacoma, and Everett areas with another 1 inch of snow Sunday morning. Storm totals  are expected to be up to 3 inches of snow, only in areas above 300 feet in elevation, and particularly in south Snohomish County, maybe north King County areas.

A weak weather system is moving in Saturday evening which will start as rain showers in most places and start changing over to snow overnight. This is another marginal snow event. Snow levels are expected to get down to about 300 feet. Most of the Shoreline and Lake Forest Park area is in this range except near Richmond Beach (west of 8th Ave NW) and in the lower Lake Forest Park watersheds.

I'm expecting rain showers Saturday night with some snow mixing after 6pm. Accumulations are not expected until at least midnight, even then only the highest spots in Shoreline will probably start to see the snow stick. The Hillwood neighborhood, North City neighborhood along 15th Ave NE, and Horizon View neighborhood will probably see it first. In those locations I expect to see 1-2 inches possible overnight into Sunday morning. I don't think we'll see the 3 inch mark with this one, temperatures are just too marginal.

Sunday afternoon - Tuesday we are expecting continued rain and snow showers, mostly rain in the afternoons and rain and snow mixed over night, some spots again could get all snow above 300-400 feet in elevation.

Tuesday night - Thursday we are expected to warm up just enough to be all rain showers. Temperatures in the upper 30's for lows, and mid to upper 40's for highs.

Thursday night - Friday Rain is expected, with breezy conditions, temperatures keeping in the 40's breaking to showers going into Saturday.

Bottom line: Snow is expected for elevations above 300 feet, some places could see up to 3 inches by Sunday morning. More accumulations are possible through Tuesday but they may be spotty and limited. Roads will probably remain mostly clear in most areas after Sunday afternoon. This is another marginal snow event where it'll not quite get cold enough for a full blown solid freeze.


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