SEATTLE — A landslide north of Vancouver has disrupted passenger train service between Seattle and Portland, Oregon, until Sunday night, according to the Washington state Department of Transportation. The slide, which occurred south of Kelso early Saturday morning, blocked the railroad tracks and triggered a 24-hour moratorium for all passenger trains per BNSF Railway rules, WSDOT spokesperson Janet Matkin said. The moratorium affects several West Coast Amtrak lines, including Coast Starlight trains. Trains previously scheduled to terminate in Seattle will instead terminate in Portland. Buses …