Seems a lot of places around the world are seeing this flash of blue light. Some with storms, some with transformers and electrical stuff. Weird though...
Here's some links:
https://uk.news.yahoo.com/bright-flashes-illuminate-sky-substation-145640922.html
https://uk.news.yahoo.com/bright-meteor-streaks-across-birmingham-125916816.html
Old https://www.nytimes.com/2018/12/27/nyregion/blue-sky-queens-explosion.html
They’re getting ready for project blue beam.