Most evening models are in now in. Nothing has changed. Possible arrival of any precipitation is midday or beyond within the FOX12 viewing area west of the Cascades. Another big question is whether ANYTHING falls tomorrow. Our RPM model is dry over the PDX metro area all day and the WRF-GFS has a trace to .04″ by late afternoon.
There is one spot that COULD see freezing rain in the morning; that would be if the precipitation arrives right away 7-9am in the coast range valleys. Especially south of Grande Ronde. Even just west of Corvallis could be a place that sees some spotty glaze early in the day
Of course I’m being a bit dramatic with the 1% chance in Portland, but you get the idea.
One other spot where we may see a glazing is tomorrow evening in the Columbia River Gorge. Both the WRF-GFS and our RPM imply some upslope precipitation running into the west/central part of the Gorge from Crown Point to Cascade Locks. That would most likely be freezing rain, possibly ice pellets closer to Cascade Locks. I’ll be keeping a close eye on that tomorrow afternoon/evening for you.
Chief Meteorologist Mark Nelsen