NEW YORK - Norfolk Southern Corp on Thursday warned customers along its U.S. Northeast crude rail route that deliveries may be delayed due to Hurricane Joaquin, which could threaten the East Coast in upcoming days. The rail operator said customers should be prepared for service delays along its network in Pennsylvania, which a recent state-commissioned report said carries 14 to 25 unit trains per week to East Coast refineries. “Hurricane Joaquin is expected to impact portions of the East Coast beginning Sunday, October 4th, with 2-12 inches of rain and high wind gusts. We anticipate that our services will be impacted as a result,” the company said.