Powerful surf is forecast to impact the Pacific Northwest coastline Sunday and Monday.
Strong low pressure in the Gulf of Alaska is generating large swell, which is headed for the Washington and Oregon coastline. Expect the high surf to reach the coast Sunday afternoon in combination with very strong wind generated seas. High surf peaks Sunday night into early Monday. There is a high-tide Sunday evening as well. This is not the time to be on the beaches.
There is a high-surf advisory in effect from 11 a.m. Sunday to noon Monday, issued by the National Weather Service in Portland.
Seas: Above 20 feet by noon Sunday, peaking at 24 to 28 feet Sunday night into early Monday morning. Subsiding below 20 feet late Monday. Periods of 14 to 15 seconds.
Surf: The surf zone will be extremely chaotic and rough. Anyone near the surf zone will be prone to being swept away by erratic and unpredictable sneaker waves that can be much larger than the general seas.
Impacts: this is not the time to be on the beach or rocks anywhere near the surf zone. Doing so will be taking your life into your own hands. If you wish to observe the surf, do so from a safe distance several hundred feet from the surf zone. Debris such as logs in the surf zone can be rolled and even tossed onshore without warning. Unpredictable sneaker waves and rip currents can easily catch beach goers off guard and sweep them away into the cold Pacific waters.
Precautionary/preparedness actions: A high surf advisory means that high surf will affect beaches in the advisory area, producing rip currents and localized beach erosion. Waves will be large and energetic enough to easily wash people out to sea or throw dangerous large debris onshore with enough force to cause bodily harm.