NUFORC Sighting 179866

Occurred: 2023-12-30 07:15 Local
Reported: 2023-12-30 08:22 Pacific
Duration: ~10 minutes
No of observers: 1

Location: Diamond Bar, CA, USA

Shape: Unknown
Viewed From: Land
Angle of Elevation: 45

I was asleep and I heard a low rumbling from outside

It sounded like a low rumble, almost like a plane passing overhead. Only it didn’t grow or fade, it persisted at a constant rate. I thought maybe the heat in the house turned on but there was nothing around me that could be making the noise. I thought it could be thunder but it never stopped. Then it just stopped, all at once. It sounded like it had to be coming from outside. I thought it could be an earthquake but I didn’t feel any shaking. Just a low hum. I frightened me because I just had a nightmare, I wasn’t sure if it was connected. The hum happened twice in the night, the second time was around 7:15 in the morning, I’m not exactly sure when the first one was, but they both lasted about the same time. It was raining a little in between the two hums, so I thought it was thunder, but I never heard thunder for that long and that persistent and monotone. It didn’t sound mechanical. I don’t want to be contacted about this, but I would not mind answering any further questions if needed. I simply wanted to report what I experienced.

Posted 2024-02-15