Update: Sound Transit Sea-Tac station is temporarily closed. Service from Seattle's southend, however, is back up with a train leaving from Columbia City station into downtown after about a two hour delay.

Earlier, our transportation reporter Mike Lindblom was at the Columbia City Link light rail station where more than 100 rail passengers waited inside one of the trains for up to an hour before being told to get off and take a bus into downtown.

The train operator said that the northbound train had lost electrical power. Earlier, according to a passenger, the driver had said there was ice on a power line.

This comes on top of other problems with rail this morning, including an earlier stall inside the Beacon Hill tunnel.

Riders complained about scant information online from Sound Transit, including the agency's text alerts.

"I get alerts on my phone. They just totally posted one that says it was normal," said Joy Dunay, trying to get downtown.

The stoppages are in contrast to Thanksgiving week 2010, when Link stood out by running flawlessly with full trains of travelers to the airport. It broke its weekday record by hauling 29,000 riders a day.

Going southbound Thursday morning, riders waited up to an hour in the downtown Seattle Transit Tunnel. Spirits were generally mellow, though at least one man gave up to seek a cab. When a train left around 9 a.m., it carried about 125 people, as riders had accumulated from missed trips over the course of an hour.

Because there is no cellphone service in the Tunnel, people had trouble communicating with their employers and friends.

"What do you do? Right now, I'm happy I'm on the way," said Patrick Allen, heading to work as a Chase personal banker near Othello Station.

Crews were running trains all night to sweep ice off the overhead power lines, but Thursday's freezing rain has been persistent.