Wednesday early morning update discussion

By Rod Hill on 2020-01-15

Most areas report 28-33 degrees at this hour with a mix of partly cloudy skies and winds
starting to back to the east 5-15 mph.  Black ice is a concern with the cold temps.  Gorge
temps are much colder at 23 degrees in Hood River.  With east wind picking up, the gorge
temps will be watched closely today. 

Radar is picking up increasing moisture just offshore and snow showers are expected to 
develop mid morning.  Possible light accumulations are in the forecast, followed by warming
temps this afternoon and a transition to rain as moisture increases.  East winds will become
gusty 15-30 mph and gusty to 45 near the gorge.  While much of the valley will warm into the
upper 30s and possibly 40 degrees today, I will be watching for possible cold spots in east
Multnomah county, although forecast models are insistent that even Troutdale sees warming 
and a transition to rain.  

WINTER ADVISORY for the gorge once you get east of Troutdale, where 3-6” of snow could
accumulate through Thursday morning as east winds blow and temps hold near and below

Wednesday night will see valley temps mostly hold above freezing, but as temps drop a bit, 
a wintry mix will be possible.  East winds will continue to be breezy 10-25 mph. 

Thursday will see all rain after an early possible mix.  Rain showers will decrease during the day
as valley temps warm to 40 degrees.  Most dry weather to start Friday. 

Snow levels will rise this afternoon to 2,000 feet and higher, meaning cold air pockets in the mountains
below 2,000’ will see an icy mix of precipitation. 

At this point extended models have backed off on any extreme cold over the coming 2 weeks. 

Rod Hill