An Amtrak train with 183 passengers on board that was stuck in the snow for nearly 40 hours is now on its way back to Seattle where it departed on Sunday.
Heavy snow and downed trees had prevented rail crews from reaching the train until Tuesday morning.
The service, travelling from Seattle to Los Angeles, hit the tree around 18:20 on Sunday.
No one was hurt in accident, but passengers have complained of a lack of access to food, water and internet.
Passengers said other items, such as nappies and female sanitary products, were running out and stress levels were rising.
One passenger, Rebekah Dodson, told KTVL News: “We’ve gotten yelled at for opening windows. We can’t get off the train because there’s 4ft (1.2m) of snow in every direction. There’s nowhere to go.”
In a separate interview with CNN she said several students have “panicked” because their university professors are refusing to accept their excuse for missing classes.
She added that the group includes about 20 students from Japan, and that there is poor mobile phone reception in the region.
The Coast Starlight Train 11 was stuck near Oakridge – a small town that has become further isolated by the wintry conditions, with snow blocking roads and causing the town to lose power.
Amtrak said no passengers would be charged for any food or water. They were working with the Union Pacific rail company to clear tracks.
Passenger Carly Bigby told the BBC another locomotive had arrived around 06:00 local time, but Amtrak informed them “it is going to be a slow go”.
In a statement on Tuesday, Amtrak said the train is now on its way back to Seattle, but “due to weather conditions, additional delays are to be expected along the route”.
Amtrak said that passengers were kept on board the train because of the power outages in Oakridge and to avoid separating passengers between the town’s two small hotels.
Residents in Oakridge say the situation there is also growing dire, as local petrol stations and grocery stores have had to shut due to lack of electricity.
“You can’t get a hold of water, you can’t get a hold of food, you can’t get a hold of any sort of fuel to create heat or to cook with,” Christina Mentzer told KPIC-TV.
“So people are looking for propane, people are looking for gasoline, people are looking for water. Today they’re asking, but as of right now essentially what’s going on is they’re going around town finding where they can get stuff if it gets that bad.”