Yesterday afternoon, I had a GFCI switch trip. It would not reset. I figured I had a ground fault.
I left the home for a few hours and after I returned I was able to successfully reset the GFCI.
The only other factors worth noting are that before I left the house: a) it was raining outside and b) there was a crew from the city doing some work nearby some electrical power grid infrastructure (transformers, power lines, etc.). I did not see them physically on the poles but they had earth moving equipment. I don't have any idea what kind of work they were doing or if it was related to the electrical system at all.
What could possibly explain this fact pattern? In particular, how could the GFCI not be resetting before I left, then suddenly able to reset after I return? Could the problem have been caused (and fixed) from outside the home? Is this something I should worry about repeating and start looking for ground faults or doing some troubleshooting now?