An excerpt from Mark's latest blog post. "The NWS is going for a Portland snowstorm tonight and Sunday morning, but I think it’s unlikely. They are forecasting 1-3″ in the metro area (3″ on hills) and have a winter weather advisory up starting at 10pm. I feel that’s way overdone for several reasons. The biggest is that we’re in mild onshore flow through around sunrise Sunday. In fact southwest wind picks up this evening and continues until almost day break. Freezing levels are above 1,000′ through 7am tomorrow, when almost all of the moisture will be falling out of the sky. I’ve seen this many times here in Portland. We’ll be too warm down at the valley floor until sometime after 4am to even think about snow sticking down here. There is excellent model agreement on this as well. That southwesterly breeze is a real killer (for snow) UNLESS the atmosphere is colder than what we’re expecting now. Take a look at model snow forecasts from the ECMWF, WRF-GFS, & RPM and they agree." Once again calling the NWS out!