An inversion will continue to prevent mixing of the lower elevation air which may create poor air quality into Saturday. All southern Oregon county low-lying areas are in an Air Stagnation Advisory until Saturday at noon. Air quality has reached “Unhealthy for Sensitive Groups” at times in Cave Junction with “Moderate” levels for most other valley and basin locations. This with patchy valley morning fog will be the only weather impacts into Saturday.
An arctic cold front will bring rain to west side areas Sunday afternoon dropping to the east side and northern California Sunday night. The main impacts with this storm will be mountain snow for the Cascades and Siskiyous, a much colder airmass with brutally cold temperatures expected on the east side with lows potentially to the single digits and perhaps lower, and the likelihood of snow covered Cascade Passes by Monday morning. Snow levels will drop to 2,000 feet by Monday morning and most showers will taper off through the day. However, if showers linger into Tuesday we could see light valley snow accumulations. This system is still several days away but those traveling Sunday and Monday should be prepared for winter driving conditions, even for Siskiyou and Sexton Summits. This storm is going to bring more rain and snow to northern and central Oregon, so those returning home from the north should be extra prepared. Confidence is high on a cold airmass moving in, but timing and snow totals has yet to be pinned down. Stay tuned to Newswatch12 for the latest on travel impacts and low valley snow chances.
Thanks for logging on and have a Happy Thanksgiving!
Meteorologist Megan Parry