Both the Haverhill and Greenbrush lines are having "track" issues this morning; in the case of the Haverhill Line, that involved an out-of-service train derailing. One Haverhill train, the 204, left Andover like 45 minutes late. Tim the Enchanter reports:
I'm sitting on the Haverhill line right now. We've traveled half a stop in 90mins. "Winter Happens", per MBTA signs.