PORTLAND — While the week’s freezing temperatures warmed Saturday in the Portland area and more snow turned to slush, blizzard-like condition blew through the Grande Ronde Valley, dealing Eastern Oregon its sixth winter storm in two weeks, according to the National Weather Service.

A blizzard warning was issued for the Grande Ronde Valley Saturday night with more than 4 inches of snow possible in some areas.

“They’re definitely getting strong winds through there,” she said. “Having this much snow is unusual for some parts in our area.”

Transportation officials advised holiday travelers planning to drive through the Grand Ronde Valley to reconsider and stay off the roads until the storm passed.

Early Saturday, the Oregon Department of Transportation closed two highways because of limited visibility, snow drifts, slush and ice.

Interstate 84 westbound was closed between La Grande and Ontario, according to ODOT, and the highway’s eastbound lanes were closed between Pendleton and Ontario.

Meanwhile, Oregon Highway 237 was closed between Island City and Cove, as well as between Union and North Powder.

Along the coast, a stretch of U.S. Highway 101 near Tillamook was closed Saturday due to standing water on the road. While forecasters predicted rain will hit the coast through next week and some snow runoff would melt, the National Weather Service kept a watch on northwest Oregon’s river levels but held off on issuing any possible flood warnings.

“It’s close in a lot of cases,” said Charles Dalton of the National Weather Service in Portland, “but there’s still nothing that says we’re going to hit flood stage at any river.”

In Portland, where temperatures rose above 40 degrees, residents tried to dodge puddles on the slushy streets and sidewalks.

The Oregonian newspaper reported the city planned to let any slow-to-melt snow or ice on side streets thaw. Portland Mayor-elect Sam Adams said the city would only plow secondary streets if doing so became a matter of “life and limb.”

He said the city, which has spent more than $2 million on snow-removal efforts, has only 50 snowplows. In comparison, Spokane, Wash., a city about half Portland’s size, has 92 snowplows, the newspaper reported.

“I’m not here to make any excuses,” Adams said.