Why do you think that underground wires means no outages?
I don't think so, but when people associate outages with storms, they usually think of downed power lines, trees etc.
I look at this outage as a freak occurrence, just my house, both phases. Quite unusual. Was it just a buildup of salt and water that ruined the cables? IDK. Maybe if I'm around when they put the permanent replacement there, I'll be able to inquire.