My first thought when I got the phone call was an undervoltage. This seems to happen frequently in these type of storms. However upon inspection, it is all on the same phase and shows sign of an extensive surge. The next scenario is lightning. There were some thunderstorms reported in the area, however I never saw any. That is the only case that I can see but the homowner says that he didn't see any.
My next step is to talk to PoCo and have them check the transformer and connections. I am also going to recheck all secondary connections for loose neutrals, ect.
