A Metro Transit bus traveling north on Interstate 5 on Thursday morning swayed so severely that some passengers were thrown from their seats.

The Route 941 bus was heading from the Star Lake Park-and-Ride toward Tukwila in the HOV lane when it began swaying at around 7 a.m., passenger Sue Callahan said. ...

Callahan said the swaying was so severe that passengers feared the bus would tip and land on its side. The swaying went on, she said, for 15 to 30 seconds.

Read the whole story in the Seattle Times.