
© Kent Porter, AP
Large waves crash ashore at Duncan's Landing north of Bodega Bay, Calif., Monday, Dec. 17, 2018, as a large swell train arrive on the Sonoma Coast.
Storm systems, driven by persistent low pressure near Alaska, are churning waters to dangerous levels along the West Coast of the United States.
The focus of the punishment from massive waves is from southern Washington state through central California. The San Francisco Bay area is one region taking the brunt, with waves expected to reach 30 to 40 feet in height through Tuesday. It's even been
enough to postpone a surfing competition.
This event is huge, and truly affecting the whole West Coast. High surf warnings extend from north of the Oregon and Washington border to about a two-hour drive north of Los Angeles. High surf advisories or gale warnings stretch from the Canada to Mexico border.
"The dramatic wave heights are related to a consistent fetch of wind action that . . . has origins up near Alaska," Marshall Shepherd, professor of atmospheric sciences at the University of Georgia,
writes at Forbes.
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