SEPTA delays started early in the morning rush on Friday, as the transit slowdown sparked by the removal of a third of the Regional Rail fleet stretched into its fourth weekday.
The first delay reported on SEPTA's Twitter feed early Friday was on the Paoli-Thorndale Line, where Train #516 was operating more than 10 minutes late, according to SEPTA.
A cascade of other delay reports on various train lines followed, with some as long as 20 minutes, throughout the morning.
Paoli-Thorndale trains seemed to experience the bulk of the problems, with delays also plaguing the Lansdale-Doylestown Line, the Airport Line, the Media-Elwyn Line, the Fox Chase Line, the West Trenton Line and the Cynwyd Line, among others.
To make matters worse for the already strained trains, a power issue near Jefferson Station in Center City also slowed operations this morning, contributing to many delays.
SEPTA reported overcrowding on some trains, with at least one Airport Line train forced to go express and leave passengers behind between Glenside and Temple University in the early morning hours.
SEPTA is expected to hold a news conference at 1:30 p.m. Friday to provide an update on the service slowdown. It's unclear what the update will involve, but the transit authority had been looking into the possibility of renting additional train cars from NJ Transit and Amtrak earlier in the week.