JQuake is a Japanese earthquake information tool known for relaying real-time seismic and tsunami alerts, and this clip is labelled for the moment a tsunami notice is lifted. That status update became useful outside weather coverage because streamers and editors already borrowed JQuake alert sounds for sudden disaster jokes and fake emergency cutaways. The lifted tone works as the opposite of an alarm, a tiny official sounding endpoint that signals danger has passed, which is why it still appears in short meme edits and notification style videos.