A spontaneous broad message. From the way the signal travelled, it came from barely outside the edge of this galaxy.
The message source is vague, as there didn't seem to be a code input, though it's labeled to be from some beacon that recently went online, and was reportedly "attacked by a divine beast", which seems rather doubtful given how rare but common enough those are.
Urgent message to G-S16. I have recieved intel about dark blue storms in the north, all headed southwest. Do not approach those, they will absorb anything.
What seems absurd is, if anyone actually bothered to do a scan about there, there wouldn't be any of the such detected. The boy did call wolf for nothing. Well, whoever sent this was likely a boy playing tricks with everyone. At least it wasn't on the emergency channel.
...of course, if anyone was close enough to see it with their own eyes, there would indeed be black clouds filled with unnaturally green-blue lightning. But what are the odds that anyone would be in the perfect spot, and with any direct visual?