The low off the coast is a powerful storm. It has all the classic features weather nerds love to see. There is a tightly wound low pressure center, a nice comma shape cloud signature and a strong Jet Stream pushing this thing along. However, this low will morph into something different by the time it approaches Idaho. Hence, looks are indeed deceiving as far as we’re concerned.
As the storm slams into the coast of Washington and Oregon, it will generate winds of 50 mph. There will be heavy mountain snow and heavy rain. As the storm begins to move inland, it will weaken rapidly. It appears the low pressure center itself will weaken on the coast. As it does, it will still fling moisture in our direction. This means our pattern will be unsettled starting late Tuesday. But, it will not be the same storm that will hit the coastal communities.
Look for increasing clouds on Tuesday with a chance of showers late in the day. The mountains could see additional snow at the ski resorts. There will be enough moisture that we could see occasional showers on Wednesday and possibly early Thursday. The question is, where will the snow level be? I think it will be close to the bases of the ski resorts. Mid-mountain and above should be all snow. But, some resorts could see an occasional rain/snow mix. Let’s hope not.
Our pattern is going to dry out Friday and the weekend looks very nice with partly cloudy skies and highs in the low 40’s.