Cold arctic air moved in Thursday and is going to stick around for about eight days. Highs across western Oregon stayed in the mid 40s, five to 10 degrees below average. We’re looking at the coldest seven day stretch in over 200 days! March 17th through 23rd was the last time we saw a stretch of 7 day’s with highs all below 52 degrees. Temperatures this week will also be below our average high of 55 degrees and our average low of 39 degrees.
The jet stream is shooting south from Alaska all the way to central California and then up through Utah. This leaves the entire Pacific Northwest under this very chilly air mass. The area of low pressure that brought showers across the area Thursday is continuing to move south today and eventually east tonight. Well continue to see scattered showers off and on through tonight, with the most precipitation falling in Coos and Douglas Counties and across the southern part of the state. The Coast could also see a few isolated thundershowers today.
The freezing level will drop to 2,000 from 3,000 feet late in the day. Three to six inches have already fallen in the Cascades, with the most at Willamette Pass, La Pine and Sunriver. Another one to three inches are possible today.
The freezing level will drop to the surface Saturday, but at this time we’ll also be dry. We could see some frost and/or freezing fog Saturday morning. Highs will only climb to the mid to upper 40s Saturday with overnight lows down to the low to mid 30s.
The next storm moves in Sunday for another round of rain. Showers will stick with us through Tuesday and highs will stay in the low 50s with overnight lows dropping to the mid to upper 30s.
Have a great weekend and stay warm!
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-Meteorologist Melissa Frey