At my house it was visibly noticeable for 4+ hours.Ag_07 said:
Well earlier word was 3 am. Keeps getting pushed back
I have a family member who works for a service provider for a handful of local MUDs. Word is that the backup generators didn't kick on immediately and 14/16 pressure points were below 20 psi for 2 mins. The other 2 were below 20 for 30 mins.
His input is that's not the whole story and there had to have been some kind of catastrophic failure because power would've had to be down for a long time for the pressure to drop from 65 to 20 psi and then be below 20 for a 30 mins.