Did somebody figure out what they are supposed to be?

Its kinda weird. Some red-ish lightning, but it stays too long (3-4 seconds), so it can't be lightning and hardly caused by an explosion since its everywhere u look and not just in a specific direction.

Screenshots: https://www.dropbox.com/sh/3u78o40mth7hfwo/AAD4cFC96ZDgifpogYtfG9IDa?dl=0