There is a 100 percent chance of snow Sunday in Portland with accumulation of up to 6 inches by Sunday night and a foot by Monday morning, according to the National Weather Service.
However, a variety of factors must converge for the substantial amount of precipitation expected Sunday to arrive as snow, said weather service hydrologist Andy Bryant.
But best forecast at this point calls for snow Sunday night. Lots of it. And continuing into Monday morning up until 10 a.m.
“Monday morning commute could be …”
Bryant paused before continuing to speak.
“If we get as much snow as we thing we might,” he said, “we’d be pretty much at a standstill Monday morning.”
Again, while the forecast calls for snow, Bryant said it’s possible temperatures will not reach 32 degrees. It’s possible that it could be 35 degrees on Sunday with a lot of rain.
“The big question is will it be cold enough at (Willamette) Valley elevations to get snow?” Bryant said.
For Saturday, expect rain, up to a half inch, with a high near 49. Saturday night, additional rain accumulation of up to three quarters of an inch is possible.
–Allan Brettman
abrettman@oregonian.com
503-294-5900
@allanbrettman
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