Rain showers will move through Western Washington today and tonight with. Most of the area has seen less than .10” of rain so far today. There will be a bit of a break in the rain this afternoon, then more showers will develop and move through this evening. Rainfall amounts will be a quarter inch or less most areas by tomorrow morning. Highs today will be in the upper 40s around Puget Sound and a Winter Weather Advisory is posted for Snoqualmie Pass until noon. Some freezing rain and icy patches on I-90 will be observed over the pass today.
Rain will be around through the day Saturday and our attention turns to an area of low pressure offshore that will move near to our coast or possibly inland Saturday night and early Sunday. There is considerable uncertainty as to the strength and track of the low, but it will likely be breezy to windy for a brief time late Saturday night into early Sunday morning. A high wind event looks unlikely but we’ll monitor this as we get closer and the forecast firms up.
Regardless, rain will increase Saturday night and Sunday and will be moderate to heavy at times before rain and wind taper by Sunday afternoon. In the mountains, snow levels will be at or above 5,000 feet so it’ll just be rain through the passes.
After a possible “break” early Monday, more active weather comes our way by late Monday through Wednesday.
The flow aloft shifts northwesterly early next week, bringing in colder air aloft. This will mean a better shot at more mountain snow by Tuesday next week.
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