A couple of inches of slush could accumulate at higher elevations Monday morning, with a colder blast and more snow coming Monday night.
Western Washington could see three rounds of lowland snow over the coming week, according to the National Weather Service.
The first is forecast to hit late Sunday and early Monday, with up to two inches of slushy snow possible at elevations above 200 feet and across the convergence zone north of Seattle.
“We don’t expect it to have really huge impacts for driving,” said NWS meteorologist Josh Smith. “It’s not going to be frozen on the roads.”
And as precipitation shifts to rain Monday, any accumulated snow could be washed away — just in time for another burst of snow beginning late Monday, he said.
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Up to four inches of accumulation are possible Monday night in some places, including the Olympic Peninsula and from North Seattle to Everett and east to the Cascade foothills.
“It’s going to be a very localized situation,” Smith said. “There’s still a lot of uncertainty in exactly where the snow will fall.”
With temperatures in many areas predicted to dip into the 20s on Monday night and stay cold into Wednesday, conditions could be ripe for black ice and slippery commutes.
A third round of snow is possible Wednesday night and Thursday morning, as a Pacific storm sweeps through the region — but that forecast remains murky. Warmer temperatures that accompany the storm could erase any chance of additional snow.
“There’s a lot of uncertainty in that forecast,” Smith said.