So far, it’s been a very warm evening across Puget Sound, with temperatures this hour still in the low to mid-50s. Precipitation has also been pretty spotty the last couple of hours, with many places reporting overcast skies and a slight breeze.
The precipitation intensity should pick up very shortly, as a cold front is poised to power through the region in the next hour or so. Temperatures behind the front will drop off sharply–10 degrees or so–and by tomorrow, we’ll only be looking at highs around 45.
Tomorrow will also feature a vigorous Puget Sound Convergence Zone to the north of Seattle, meaning that thunder, lightning, and hail are all a possibility. The snow level will fall to about 1,000 feet or so by tomorrow night, and possibly down to 500 feet by Friday morning, as cooler air filters into Western Washington from Canada. Mixed rain and snow showers remain a possibility for all of Western Washington by tomorrow night, but accumulations will be virtually non-existent.
Saturday will be cold and partly sunny, and then another rainmaker arrives on Sunday. That system, while light in nature, will open the door to a parade of much stronger systems for the coming week–by next Tuesday, the Seattle area could be looking at its first real flood event of the season.
