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Western U.S. Weather Watch | West Coast Storms

Falling snow levels could make for tricky travel Sunday

Staff Writers

Saturday, November 25, 2017, 13:44 - Saturday marked a break in the train of storms that have been seemingly endless rain and snow to the Pacific Northwest, but with strong low pressure holding on in the Gulf of Alaska, more moisture is on the way to the already-soggy region.

That's bad news for parts of Washington state waiting for flood waters to recede, and might make for some difficult driving conditions through mountain passes later on Sunday. We take a look at the timing and impacts of this next round of storms, below.

WINTER IS BACK: La Niña shapes U.S. Winter this year | FORECAST & MAPS HERE

Click play to watch below: Pacific Northwest additional rain and snow through the weekend

A new system moves into the west coast on Sunday, bringing with it yet another round of soaking rain in the Pacific Northwest and parts of northern California, but in an important way, this system will be different than the few that preceded it. Namely, a dip in the jet stream and some accompanying cold air flow in with it, bringing the sky-high snow levels that have been in place for the Cascades crashing down again.

While Sunday morning will see widespread rain across the region, cold air arrives through the afternoon and evening hours, dropping snow levels to pass height by evening.

Those driving in the region this long weekend should be specially aware of local flooding, mudslides, and downed trees or branches along many of the roads stretching between the coast and the mountains. If you have plans to drive into higher terrain, Sunday morning is your best bet for better driving weather. Check roads and weather conditions before heading out, especially if your travel plans take you up to pass level through the evening hours.

Keep on top of active weatherVisit our alerts page before heading outdoors

Gusty south-southwesterly winds are also expected to affect coastal areas of Washington and Oregon, particularly through midday on Sunday when the front pushes onshore.

Click play to watch below: A windy day pushed powerful waves over a Washington ferry shoving one car into another. No one was injured in the incident.


Moderate to heavy snow accumulations will be possible across the Northern Cascades, spreading to the Northern Rockies as the system pushes inland. Accumulations are expected to be on the lighter side for the Rockies.

Interstate 5 could see heavy rain at times, while I-90 and I-84 will have to deal with some gusty wind conditions in the passes and occasional snow depending on the time of the day you plan to drive through them. Please drive safe!

Stay with us at The Weather Network as we keep an eye on your forecast!

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