The new cancellation comes just hours after the tracks were reopened from a previous series of mudslides sparked by heavy rains.
The Daily Herald reports transit officials expect regular Sounder service to resume Monday, as long as there aren't any more mudslides over the weekend.
Since there's more rain in the forecast, riders should check soundtransit.org for updates before the Monday morning commute.
Commuter and passenger service has been canceled for most of the week because of more than 10 slides affecting BNSF Railway track north of Seattle..
Most routes in Washington remained open to freight travel.