The driving pattern this week stems from a large low pressure area up in the Gulf of Alaska and its associated low pressure trough that extends down into the eastern Pacific. This will provide systems a path that allows several fronts to pass across the region this week. The first front pushed in some mainly light rain this afternoon which persists tonight as the weakening front stalls over northwest Oregon. The rain does ease further tonight by around midnight, and with light winds, the lows drop to near 51.