As of 9 a.m. Friday, traffic was slow on northbound I-97 near Route 100 due to an accident.
The outer loop of the Baltimore Beltway past Hawkins Point Road was congested due to an accident.
One eastbound lane of Route 176 was closed at Candlewood Road in Anne Arundel County due to a utility problem.
The Maryland Transit Administration was warning passengers that MARC trains on the Brunswick and Camden lines are operating at reduced speeds due to flash flood warnings. Delays ranging from 15 to 30 minutes could be expected.