I just watched Geostorm. If you want to gander at the epitome of UN propaganda films that will be more frequent, that is a great place to start. Also may be predictive programming since 2019 was the year of super extreme weather.
There's a relatively easy answer to this "mystery". Look at the weather that took place around that area afterwards. HAARP technology generates plasma when working that sometimes generates what appear to be lights in the sky.