Seven people died and six were missing yesterday as fierce winds and high seas lashed the Pacific Coast.

Though a violent storm that battered beaches from California to Washington abated somewhat after knocking out power to hundred of thousands of people and toppling redwood trees, the National Weather Service warned that a third storm in three days could hit again.

In Oregon, two people died when trees fell on their homes and one collapsed of an apparent heart attack while trying to get out of a crushed mobile home, authorities said. In the state of Washington, a hunter was killed when a tree fell on him. Two people--one in Oregon and one in Washington--died when they picked up power lines knocked down by the storm. One man died in a weather-releated traffic accident outside Portland.

A Coast Guard pilot was killed when his helicopter crashed off the Oregon coast in 60-knot winds and 30-foot seas during a search for a missing fishing boat. Two others were rescued from the helicopter.

Coast Guard aircraft continued to search a 2,100-mile area off the Oregon coast for the 45-foot Christina J, missing since shortly after midnight with three people aboard.

The Coast Guard suspended a search Friday for two women whose boat broke apart in stormy seas off Stinson Beach, Calif., on Thursday.

Across the nation, in North Carolina, Paul McCrary, assistant superintendent of the Cape Hatteras National Seashore, said park employes were working to shore up a storm-battered revetment around the Cape Hatteras Lighthouse, which was in danger of falling into the ocean.

"There's water everywhere," said Ozzie Gray, town manager of Kill Devil Hills, N.C.