Stuff fails sometimes whether you maintain it or not. What seemed to happen simultaneously to us was probably a very very quick progressive event. Something failed due to cold/snow/moisture and probably overloaded the switch designed to catch an event such as this. The progressive failure caused others down the line. Thankfully it didn’t go any further than what it did.
As a young guy I interned for Virginia Power one summer. After work one evening as I watched TV with my folks, the power to the house blinked. It wasn’t the real quick blink you sometimes see, but a rather long one of a few seconds. I thought to myself that this couldn’t be good and I was right. The next day my supervisor took me to one of those large transformer substations. One of ceramic insulators actually blew up - but this one had about 8-10 of those inverted bowl type insulators placed in series and almost all of them disintegrated. THere were ceramic shards all over the transformer station yard. After this event, the backup switch failed, but thankfully the third level device held, but the event apparently blinked half the East Coast.
The amount of electricity transferred around is incredible.