The delays of up to 45 minutes that you experienced during your morning commute resulted from the loss of catenary power from Greenwich to Harrison shortly before 7 AM.
This power loss was caused by a ground to the electrical feed at the substation in Cos Cob. This was caused when a squirrel entered the area and shorted a transformer.
We immediately dispatched an emergency crew to the substation where they reset the relays for power protection. Once this was done, our Power Control Center personnel in Grand Central were able to restore power to the area by 7:25 AM.
We quickly devised a plan to operate a limited number of available trains between New Rochelle and Grand Central, however, because this occurred at the height of our rush hour, a backlog of trains began to build, causing further delays.
We regret any inconvenience this service disruption may have caused and we thank you for your patience.