Amtrak is canceling two days of train service in Louisiana because of Tropical Storm Isaac, which is expected to become a hurricane before hitting the northern Gulf Coast on Wednesday.
The rail service says that on Tuesday and Wednesday, the Crescent's route will end in Atlanta and the Sunset Limited's in San Antonio, Texas. The action is because of the possibility of torrential rains, floods and damaging winds. There won't be alternate transportation on the routes.
Ticket holders can get a refund or a voucher for future travel.
The Crescent usually runs between New York and New Orleans, and the Sunset Limited between Los Angeles and New Orleans.
Amtrak also is suspending part of its Silver Service line between Miami and Orlando.