The National Weather Service says a series of strong Pacific frontal systems are heading toward the Northwest and will bring heavy rains at times this weekend and into next week.
Forecasters say the first storm will arrive Friday night with strong winds. Rain is expected to continue through the weekend with another strong front on Sunday night and another on Monday night.
The rains also are expected to extend through Eastern Washington valleys well into next week. Forecasters say the storms will likely drop heavy snow in the mountains above 3,500 feet.
University of Washington Atmospheric Sciences Professor Cliff Mass writes on his blog that the last two weeks of November are the wettest period of the year, and this year won't disappoint.