MassDOT just announced there will be no subway, commuter rail, bus or boat service on Sunday:
The projected heavy snow and high winds will significantly inhibit the MBTAâ€™s ability to deliver safe and reliable service. Trees and power lines could come down, and visibility will be hampered. Additionally, the MBTA is concerned that a train could break down between stations, resulting in a track right-of-way evacuation that would put customers, employees and emergency responders at risk.
The suspension of service will also allow MBTA crews to keep clearing snow and ice from tracks, the third rail and switches. A decision about the status of service for Monday will be made Sunday.