NUFORC Sighting 145724

Occurred: 2019-04-18 09:00 Local
Reported: 2019-04-18 08:08 Pacific
Duration: 6 minutes
No of observers: 1

Location: Milaca, MN, USA

Shape: Unknown
Characteristics: Emitted other objects

Extremely loud low frequency rocket like rumbling sound traveling east to west in the sky.

At 9 a.m. this morning, I heard a rumbling sound that I thought was thunder and it got progressively louder. I then realized that it was not funder but some sort of aircraft traveling in an east-to-west direction.

As it got louder and over my location I realized that this was much louder and lower in frequency than the normal jet.

I have heard many different Jets even in full afterburner and this was much louder and lower and frequency and sounded more like a very large rocket exhibiting the typical low-frequency pops that are heard with large rockets.

the total time that I heard this event was probably 5 to 6 minutes before the sound finally dissipated to the West.

the sky was totally overcast so I was not able to visually see what the object was.

Posted 2019-04-18

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