SEPTA announced via its Twitter feed and website that it is relaunching all of its regional rail services Wednesday morning.

Riders should be aware of potential delays, however, as the company said it is still dealing with fallout from Hurricane Sandy.

"[On most lines,] some delays may be encountered due to residual storm effects," the company said in a statement.

SEPTA singled out the Chestnut Hill West and Doylestown lines as ones with potential for significant delays.

"These lines experienced significant damage and may operate with substantial delays," the company said in a release.

Partial SEPTA service resumed Tuesday after the company suspended its service early Monday morning.