Saturday, December 19, 2020

Rain, Breezy Winds, and a Possible Chance of Snow

We are in for an interesting few days of weather in Western Washington! Let's dive into the details!

The focus shifts to rain over the weekend and on Monday. This forecast from NWS Seattle shows forecast precipitation through 4 PM Monday. 


Expect 1.5-2 inches of rain across the South Sound. Some of the impacts of the rain are shown below. (Also from NWS Seattle).


Daytime on Sunday will be more of a break between rainy systems, but expect rain early and late on Sunday. Like the graphic says, most rain will fall Saturday night. Expect another rainy day on Monday. Rises on area rivers are likely, but not to the extent of flood stage.

Winds are possible during this time frame as well, with gusts of 30-45 mph possible Saturday night and during the day on Monday.

As if this is not enough weather activity...things get even more interesting Monday afternoon, as there is an uncertain chance of lowland snow on Monday afternoon/evening. Yes, a chance of snow. You read that right.

This graphic from NWS Seattle shows what the situation is like as of Saturday.


It is too early to talk about snow accumulations. There is substantial uncertainty regarding the possible amount of snow, if precipitation will fall as snow, and if a higher snow potential exists. As the graphic says, details will become more refined by Sunday night/Monday morning.

You might be wondering how we will go from rain to colder with a chance of snow in the same day.

It all has to do with the track of a low center that is moving into the area on Monday. 

If the low center moves on a more northerly track (moving onshore from approximately Forks northward), the chance of lowland snow is lessened.

If the low moves onshore from approximately Hoquiam southward, the possible chance of lowland snow could exist.

After Monday, it is likely that we will have a few days of sunny & chilly weather.

Stay tuned for the latest information! I will have an update Sunday night!

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