Weather satellite this morning showing a clearly defined occluded deep low pressure system off of the Northwestern U.S. coast. This weather system will deepen as it hooks up the coast and into Vancouver Isle tonight, but as it does, it will drag another stronger and moister warm front south to north through Northcentral Washington this afternoon and overnight tonight. There is a winter weather advisory in place for the Wenatchee area and Waterville Plateau until 10:00 tonight where 2-4” of snow is possible. Afternoon high temperatures today in the lower 20’s.
For Thursday, expect mostly cloudy skies and a 30% chance of snow, warmer too with highs in the lower 30’s. The upper trough axis shifts through the region.
The sun will make a brief return on Friday with increasing clouds throughout the day with afternoon highs in the mid 30’s.
The next big weather system takes aim on Northcentral Washington Saturday as we stand to receive the most snowfall with the potential for heavy snow in the Cascades and significant snowfall in the adjacent valleys. 3-5” of snow is possible on Saturday with afternoon high temperatures in the mid 30’s.
Temperatures warm under a southerly flow on Sunday with mostly cloudy skies and high temperatures jumping up into the upper 30’s.
Best chances for precipitation next week looks to be late Monday into Monday night with a 30% chance of a rain/snow mix with afternoon highs in the upper 30’s.
The forecast looks more muddled as more energy moves into the Pacific Northwest with more unsettled weather Tuesday and through mid-week. As temperatures moderate next week, anticipate daytime temperatures continue to warm above freezing, continuing the chances for a rain/snow mix expanding across the lowlands