MTA bus and Metro subway service: May be canceled. Check www.mtamaryland.com.
MARC train and commuter bus service: Canceled.
Light rail: Running.
Amtrak: Running with slight delays. Tracks south of Washington may be closed.
Greyhound bus: Canceled until at least 9 a.m. Updates: 410-752-1393 or 410-633-6389.
BWI Airport: May be closed. Call your airline or check www.bwiairport.com.