The transformer explosion in Astoria was… right outside my window. So bright I couldn’t look directly at it. pic.twitter.com/lsv5uHrENb— Nick Riccardo (@nickriccardo) December 28, 2018
Update to previous post: https://overdensity.com/2018/12/28/science/new-york-city-sky-lights-and-flickers-blue/
Apparently Con Ed Facility In Queens experienced an Explosion beaming bright lights across the entire New York City.
Further reported by the Guardian:
New York City sky lights up bright blue after Queens power plant explosion
https://www.theguardian.com/us-news/2018/dec/28/new-york-sky-bright-blue-lights-explosion-astoria-power-plant-queens