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Snow? Looking likely for Sunday, but only a dusting for most

Just a dusting for most, but there will be some snow.
Shannon Kringen
Just a dusting for most, but there will be some snow.

That's the forecast as of Friday morning, from KPLU and UW weather expert Cliff Mass.

"I don't know if you'll wake up to it, but Sunday morning into Sunday, during the day there will be some snow showers," says Mass.

"Now, I can't give you the exact location of all of the snow showers. But there's really an excellent chance that many people will see at least some snow showers, and maybe even as much as a half inch or an inch, if  you get away from Puget Sound into the foothills."

Then, on Sunday night and Monday, very cold air will push down from Canada into Puget Sound, bringing a frigid morning to start the work-week.

It gets fuzzier after that, but Mass says:

"Next week should be substantially colder than normal, with a 'classic' La Nina pattern in place. The next major weather system is late Tuesday into Wednesday with snow in the mountains and a chance of light lowland snow."

Getting a snow forecast right isn't easy around here, says Mass. 

“We don't have much skill in getting the exact distributions of the snow in such a case," he writes in his Weather Blog. Will it snow where you live? Hard to say.

He's more certain about snow in the "convergence zone" south of Everett, and about Bellingham getting hit separately on Sunday night.

Oh yeah, and what about Friday and Saturday? There's a big rainstorm and windstorm on the way, hitting Seattle by about 4pm today. Tomorrow, it starts getting colder, but no snow forecast until Sunday, except for possibly in that convergence zone.

Listen to the full discussion and also subscribe to a podcast of this and previous "Weather with Cliff Mass" shows.

The weekly KPLU feature "Weather with Cliff Mass" airs every Friday at 9 a.m. immediately following BirdNote, and repeats twice on Friday afternoons during All Things Considered. The feature is hosted by KPLU’s Health and Science reporter Keith Seinfeld. Cliff Mass is a University of Washington Professor of Atmospheric Sciences and renowned Seattle weather prognosticator.

Do you have a weather question? Cliff Mass and Keith Seinfeld occasionally answer reader questions on the air.Share yours here.

Keith Seinfeld is a former KNKX/KPLU reporter who covered health, science and the environment over his 17 years with the station. He also served as assistant news director. Prior to KLPU, he was a staff reporter at The Seattle Times and The News Tribune in Tacoma and a freelance writer-producer. His work has been honored by the American Association for the Advancement of Science (AAAS) and the Knight Science Journalism Fellowships at Massachusetts Institute of Technology.