From Cliff Mass:
1 PM Update
The 1 PM visible satellite image shows the approaching front/low pressure system with substantial convective clouds behind it. The leading edge of the front is now stretching from Forks, on the NW coast, to NW Washington.
The latest radar indicates showers along the coast and over NW Washington, all of which are reaching the surface as rain. A few snow flurries have been noted around the region.
The latest sounding above Sea-Tac airport (12:30 PM) shows a freezing level around 950 ft, which means the atmosphere is now close to cold enough for snow to reach sea level. This morning's model output suggests some warming aloft this afternoon.
The snow flurries is what is happening right here - the freezing level of 950 feet is about 300 feet above my head where I am sitting. Much more at the site - Cliff has a lot of charts of current conditions as well as short-range forecasts.
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