LONG BEACH — A strong and very moist Pacific frontal system is expected to impact Southwest Washington and Northwest Oregon this weekend, bringing periods of heavy rain and high winds to the region.
A high-wind warning for the coastal headlands and beaches of the Southwest Washington coast is in effect from 6 p.m. Saturday to 6 a.m. Sunday, the National Weather Service in Portland advises.
Expect southwest winds 30 to 40 mph with gusts to 60 mph.
The warning includes the Long Beach Peninsula, the shoreline between Willapa Bay and Westport, and much of the North Coast of Oregon.
Some damage can be expected from the high winds, especially to tree limbs and power lines. Power outages are possible. Drivers of lightly loaded trucks and others in high-profile vehicles such as motor homes and those towing trailers should be prepared for difficult driving conditions.
A warm front will begin to spread rain across the area later tonight and Saturday. Rain is expected to be heavy at times Saturday afternoon and evening before tapering to showers after a cold front moves through early Sunday morning. Rainfall totals this weekend are expected to range from one and a half to two and a half inches in the interior valleys, 2 to 4 inches in coastal areas and the north Oregon Cascades, and 3 to 6 inches in the Coast Range, Willapa Hills, and south Washington Cascades.
Snow levels are expected to be well above the Cascade passes during the majority of this event, so significant rises are expected on most rivers and streams in Southwest Washington and Northwest Oregon. Minor flooding is possible on some of the more responsive rivers and small streams, such as the Grays River in Wahkiakum County and Johnson Creek in southeast Portland. Additionally, heavy rainfall may result in minor urban flooding in areas of poor drainage.