Weekend Weather

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Another dry day. This morning this were some very nice lenticular or mountain wave clouds over and downstream of Mt. Rainier. I grabbed a poor image of them from the Puget Sound Clean Air Agency visibility web cam (see to the right). This cam is there to help document variations in horizontal visibility of the region--you can see it at: http://www.pscleanair.org/airq/visibility/default.aspx. We have an inversion over us right now...with temps at 2000-2500 ft about 10F warmer at the surface. There was a wide range of temperatures at sunrise...from the mid40s near the water to just below freezing in the hinterlands.
Tomorrow will start off dry, but a weak front will approach during the afternoon. So increasingly clouds and some showers late in the day and tomorrow evening. Seattle will not get much due to rainshadowing off the Olympics. Sunday a weak trough will move through with some more showers in mountains and an active Puget Sound convergence zone north of Seattle.
Monday looks dry as another ridge moves in. Looking further afield...a warm front should move in on Tuesday with some rain...but temps will incease sufficiently to leave snow only at the highest elevations in the Cascades.
I can't believe it...but another major ridge of high pressure latter in the week. I would be nervous if I was running a low-elevation ski area now....
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