East Japan Railway Co. and other railway operators warned on Thursday that services on many lines could be canceled on Saturday and Sunday, as "violent" Typhoon Hagibis threatens to slam wide areas of the nation.

JR East said on its website that bullet trains and other major services could be halted, including the Yamanote, Chuo and Tokaido lines.

The train operator plans to update information on its website with more details, including specific lines and suspension times, at 10:30 a.m. Friday, spokesman Yuji Ishikawa said.