WOODBURY - The Long Island Rail Road is running on a significantly reduced morning rush schedule today due to an Amtrak derailment in an East River tunnel yesterday. Twenty-three westbound trains will be canceled, terminated at Jamaica or diverted.

The following branches and trains will be affected:

Port Washington Branch:- The 6:17 a.m. train from Port Washington, due in Penn Station at 7:03 a.m., is canceled.- The 7:17 a.m. Little Neck train due in Penn Station at 7:55 a.m., is canceled.- The 7:46 a.m. train from Port Washington, due in Penn Station at 8:35 a.m., is canceled.- The 8:38 a.m. Great Neck train due in Penn Station at 9:14 a.m. is canceled. Customers will be accommodated by the 8:18 a.m. Port Washington train due in Penn Station at 9:02 a.m., making all combined stops.- The 8:58 a.m. train from Great Neck, due in Penn Station at 9:34 a.m., is canceled. Customers will be accommodated by the 8:45 a.m. train from Port Washington, due in Penn Station at 9:20 a.m., which will make all combined stops.

Babylon Branch:- The 5:56 a.m. train from Babylon, due in NY at 6:59 a.m., will be diverted to Atlantic Terminal.- The 6:14 a.m. train from Massapequa Park, due in Penn Station at 7:08 a.m., is canceled.- The 6:42 a.m. Babylon train due in Penn Station at 7:49 a.m., is canceled.- The 6:57 a.m. train from Freeport, due in Penn Station at 7:40 a.m., will be diverted to Atlantic Terminal.- The 7:29 a.m. train from Freeport, due in Penn Station at 8:13 a.m., will be canceled at Jamaica.- The 7:37 a.m. train from Babylon, due in Penn Station at 8:48 a.m., will be canceled at Jamaica.- The 7:43 a.m. train from Merrick, due in Penn Station at 8:31 a.m., is canceled.- The 7:48 a.m. train from Wantagh, due in Penn Station at 8:40 a.m., is canceled.- The 8:10 a.m. train from Freeport, due in Penn Station at 8:50 a.m., is canceled.- The 8:25 a.m. train from Freeport, due in Penn Station at 9:08 a.m., will be diverted to Atlantic Terminal.- The 8:35 a.m. train from Babylon, due in Penn Station at 9:37 a.m., will be canceled at Jamaica.

Far Rockaway Branch:- The 8:03 a.m. train from Valley Stream due in Penn Station at 8:42 a.m. is canceled.- The 8:10 a.m. train from Far Rockaway due in Penn Station at 9:05 a.m. is canceled. Customers will be accommodated by the 8:21 a.m. train from Far Rockaway, to Penn Station, which will be canceled in Jamaica.

Long Beach Branch:- The 8:03 a.m. train from Long Beach, due in Penn Station at 8:54 a.m., is canceled.

Hempstead Branch:- The 6:58 a.m. train from Hempstead, due in Penn Station at 7:52 a.m., will be canceled at Jamaica.- The 7:12 a.m. train from Hempstead, due in Penn Station at 8:03 a.m., will be canceled at Jamaica.

West Hempstead Branch:- The 7:36 a.m. train from West Hempstead, due in Penn Station at 8:29 a.m., will be diverted to Hunterspoint Avenue.

Customers at Jamaica can either board other trains for Penn Station or take an E train into Manhattan. New York City Transit will honor LIRR tickets on the subway.