Enenews: "Intense M5.5 hits Chiba, outside Tokyo — Followed by M4 aftershocks at same location"
Nuckelchen posted this video linked below. The video is dated 4/24 3:53. I don't know if that is PM or AM.
I don't know if the event recorded on the video was prior to or after the earthquake.
Watch the video carefully around 5:38 and see the blue flash/glow and the purple one as well