[Mo1]

Here is an article from last night

Safety steps stopped spread of outage.

Technicians in Valley Forge saw the sudden power surge. Circuit breakers tripped. And within four minutes, the electricity grid that serves Pennsylvania and New Jersey had clamped off the spike that blacked out much of the Northeast today, shielding Philadelphia and points south from the disruption

[Cold Heat]

electricity grid that serves Pennsylvania and New Jersey had clamped off the spike that blacked out much of the Northeast today, shielding Philadelphia and points south

This is precicely what should have happened near the original fault, where ever that is.