This is the Forecast Discussion from KSEA / Seattle WA NWS at Friday 01/31/2025 05:23:56 PST
SHORT TERM, today Friday into Sunday:
Now lets talk snow in the [Puget Sound] lowlands for the weekend. Looking at the variables, first the positive variables for snow. Temperatures aloft are cold enough, model 850 mb temperatures -6 to -9C through the weekend, 1000-850 mb thickness values drop below 1300 meters late tonight and remain below 1300 meters through Sunday as well.
The negative variables for snow, surface gradients remain onshore and 925 mb winds are also southerly.
With the onshore flow high emperatures both days will be near 40. Lows Saturday night near freezing and Sunday night a couple of degrees colder with most places in upper 20s. Given these conditions the best chances for accumulating snow are going to take place in the overnight hours
Copy-pasted from the "Deep Weather" app on my iPhone 14
[#]WAwx #ORwx #BCwx #PNWwx #PNW #KSEA #NWS #WX #Weather #Snow
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