SAN FRANCISCO — A second storm fueled in part by a typhoon hit California’s border with Oregon Saturday with heavy rain and gusty winds as it made its way south.

After an overnight lull, rain returned to Eureka and nearby cities, where winds at 40 mph and gusts up to 70 mph were recorded in the highest points. There were numerous reports of downed trees and the most rain — nearly 4 inches — fell in the town of Orleans in Humboldt County during a 24-hour period, the National Weather Service said.

Officials in Humbolt and nearby Del Norte County provided sand and sandbags for residents to protect against flooding and the Coast Guard warned of swells up to 25 feet and urged people to avoid low-lying beaches and other coastal areas.

Farther south in the San Francisco Bay Area, residents cleaned gutters and cleared trees ahead of the storm expected to arrive Saturday evening.

Especially vulnerable are fire-damaged areas, where the land is at risk of erosion.

Patty Eaton, a spokeswoman for the Santa Clara Valley Open Space Authority, said a massive wildfire that was fully controlled Wednesday left 1,500 acres of stumps and dead trees. But she said there was no time to do erosion control work and this could lead to problems of clogged pipes.

“One of the water district guys said it could be like a marble rolling off glass,” she told the San Jose Mercury News. “There are carcasses of animals. It’s all burned out, hillside after hillside.”

A storm enhanced by the remains of a typhoon brought the moist air to Northern California.

It followed a potent weather system that walloped Northern California on Friday, knocking out power, flooding roads and delaying flights.

“These storms have been enhanced by the moisture of the typhoon,” said National Weather Service meteorologist Matthew Kidwell, referring to Typhoon Songda, which wreaked havoc in the western Pacific days ago.

The first storm dumped between 1 and 4 inches of rain in Del Norte and Humboldt counties’ lower areas and up to 7 inches in the highest peaks. In Eureka, where rainfall last October was 2.4 inches, has received 2.3 inches of rain this month, Kidwell said.

It’s too early to tell if California, now on a six-year drought, will see a wet winter.