Some atmospheric indicators of the changing weather pattern are starting to pop up. The barometric pressure is falling, low level clouds are on the coast, and high cirrus clouds are starting to be seen out to the west. The developing storm (below) is expected to reach the PNW coast sometime on Friday with rain spreading inland throughout the weekend.
The mountains should undergo a relatively wet weekend with periods of light rain on the east slopes of the Cascades. In the mean time, enjoy the last few days of this warm sunny weather.
A strong westerly flow pattern develops behind the initial front, this will allow a set of moist weather systems to be driven through the PNW. It appears that this historic dry period will end with a rather progressive wet weather pattern.
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