The National Weather Service has advised seaside dwellers and visitors to be careful, as the Oregon and southwest Washington coast could be dangerous for the next few days.

The weather service issued a high surf advisory for the north and central Oregon coast and the southern Washington coast. The advisory is in effect from 8 a.m. to 6 p.m. Thursday.

There is also a high surf advisory in effect for the south central Oregon coast and the Curry County coast, in effect from 4 a.m. Thursday to 7 p.m. Friday. That region could see breaking waves as high as 20 to 25 feet.

The weather service predicts large waves, hazardous surf conditions and an increased threat of sneaker waves, which can come up on the beach even further than already large waves and catch people off guard.

The weather service advised people to stay away from the water’s edge and watch for exceptionally large waves, as the surf could produce rip currents and cause beach erosions.

Beachgoers are advised to stay off jetties and away from large logs on the shoreline, which can easily roll onto people in the high water, injuring or killing them.