The transformer at the front of the city by the store is having issue and causing a arcing on the 7.2Kv lines.
This is causing a brown out condition in the city.
When the arcing exceeds the limits a large circuit breaker called a recloser opens at the substation for a little bit.
It then tries to reconnect the city and if the load doesnít exceed it leaves it on.
Thatís why we saw some times the lights stayed off longer than others.