Looks like some rain in the offing for the Pacific North-wet

From Cliff Mass:

Unusual Low Pressure over the Eastern Pacific Brings Rain Back
The upper level (500 hPa) pattern is quite anomalous today, as illustrated by the height at 8 PM tonight. A closed low is due Oregon, with another farther out in the Pacific. Further to the north there is high pressure--producing an unusual, but highly stable "omega? pattern.

Much more at the site including the usual charts with the circles and arrows and a paragraph on the back.

Classical reference there...