30+ foot waves slam Washington, northern Oregon coast

30+ foot waves slam Washington, northern Oregon coast
Photo: Jay Cline/@ClineNorthwest

A coastal flood warning is in effect until 10 p.m. Thursday for the Washington coast and parts of the Oregon coast.

Swells of up to 30 feet have battered the coast, creating dangerous conditions for beachgoers.

The waves are reportedly due to an intense thunderstorm that occurred Wednesday night.

Waves are expected to drop below 25 feet by Thursday night. Flooding normally occurs when waves are 25 feet or higher, according to the National Weather Service.

Waves should continue to subside through Friday.

Beachgoers should beware of beach erosion, jetties and other structures being overtopped by large waves, minor coastal flooding and waves surging farther up the beach than normal.