SEATTLE – Snow flurries hit the Seattle suburbs Saturday morning, and by about 1 in the afternoon, the white stuff started dumping on downtown.

It was part of a string of storms expected to bring snow, rain and wind over the weekend, with the possibility of flooding by Monday.

Flurries continued Saturday afternoon, especially north of Seattle and over the south ends of the Kitsap peninsula and Hood Canal. Meteorologists said accumulations, if any, would be from zero to 2 inches, perhaps up to 4 inches near Hood Canal and from Lynnwood north. A heavy snow warning was in effect for the Hood Canal area until 10 p.m.

In Mukilteo, Lynnwood, Edmonds and south Everett, the snow was sticking on side streets. Plow and de-icing crews were called to work.

"We'll have about 15 plow drivers out tonight total," said Roy Scalf, a spokesperson for Snohomish County. "The mission now is to get the slush off the road before it gets even colder."

But the mountains are where "it's really going to pile up," said Don Carson, meteorologist for NWCN.

A winter storm warning was in effect for the Washington Cascades and Olympics. Carson said 2 to 3 feet of snow could build up at pass levels by Sunday evening. Drivers were warned to be aware of hazardous conditions, including icy roads and avalanche danger.

By mid-afternoon Saturday, several vehicles slid off the road on SR 599 and SR 99, slowing traffic. The state Department of Transportation sent a sanding truck to the area. Eastbound I-90 was restricted near milepost 34 as the Washington State Patrol performed chain enforcement.

It was opening day at Crystal Mountain, and about 2,000 skiers and snowboarders made it to the slopes.

By 5 p.m. Saturday, snow was tapering off in most places. Warmer temperatures were expected to move in overnight - along with rain.

Rain is expected to continue Sunday and Monday, bringing the potential for flooding.

"Any snowfall we saw today is going to be washed away tomorrow," KING 5 Meteorologist Mary Loos said.

She said a flood watch is in effect in Western Washington through Wednesday of next week.

Sunday's forecast also calls for winds of up to 50 miles per hour.

State Route 20, the North Cascades Highway, was closed at 7 p.m. Friday between the Diablo Dam and Mazama because of a forecast for destructive winds. State transportation officials say the winds could reach 80 to 100 miles an hour. The department will decide next week whether it will reopen the highway or leave it closed for the winter.

Phu Le

Newcastle, Wash. resident Phu Le submitted this photo to KING5.com.

Eastern Washington

A winter storm watch is in effect from Saturday afternoon through Monday afternoon for the east slopes of the Northern Cascades. Moderate to heavy snow is possible. Valley locations could see 8 to 12 inches of new snow, with 2 to 3 feet in the mountains. Snow may transition in the valley to a mix of rain, snow, sleet and freezing rain on Monday before changing to rain.

The National Weather Service in Spokane also issued a winter storm watch for the same time period.

Moderate to heavy snow is possible across the Wenatchee area and Waterville Plateau. Locations could see 6 to 10 inches of new snow before it changes to rain. Again, valley could see a mix of rain, snow, sleet and freezing rain on Monday.