I arrived in St Mary Saturday morning and the entire valley's CC system was down. I heard that in Many Glacier it was the CC system plus the phones.
This outage lasted most of the day Saturday ~
Seems that shorter outages have happened multiple times this summer.
At the last moment before I started my trip I went by an ATM and got 3 times what I normally carry in cash (didn't know at the time about the outage)
I didn't make it to East Glacier so don't know if it extended to the town.