On November 25, 2019, YouTuber 'Shannon Maybe' shared footage of strange trumpet sounds she heard in the skies of Anchorage, Alaska around 1:00 a.m.

A commenter on the video attributed the sound to road graters which she dismissed:

... it's not tho.. I looked up other videos on here and the sounds are the same in other states, some during the days and with no snow out...

Another commenter said the noise was from the HAARP project, to which she replied:

I've lived here my whole life, I've never heard that here before ever! HAARP is here in Alaska.

People all over Sonoma County looked up at about 7:40 p.m. on Thursday, Nov. 21, when a brief series of "booms" rolled across the valleys. But there was no glow in the sky, the stars were visible in the cloudless sky. Was it thunder?

Or was it a meteor?

It may be no coincidence that the sound corresponded to a large but infrequent meteor shower, known as the Unicorn (or Monocerotids, from the constellation of its visible origin), seen only every 25 years or so - and last reported in 1995. But meteors are usually silent apparitions, fleeting and ghostly.

In social media groups, many people dialoged about the Thursday night noises. Descriptions of the noises ranged from "rumbles like thunder" to "like a limb fell on the house."

And it didn't seem to be particularly localized, but strong throughout the Sonoma Valley, in Nextdoor neighborhoods from Temelec to Denmark Street. Similar social media networks reported the noises at about the same time in Healdsburg, 25 miles away. Others on Facebook said it was heard in Sebastopol, Santa Rosa, Cloverdale, Petaluma, Napa and Marin.

On October 30, 2019, YouTuber 'Jeff Stockman' shared footage of strange sounds he heard in the skies of Norwood, Ohio. He attributes the sound to a 'natural phenomenon', but something on the 'creepy side':

A series of strange and mysterious howls were recently caught on tape by a Canadian hunter, and netizens could not help but speculate about the nature of the sounds - with the craziest theories coming up, including those pointing to such legendary creatures as Sasquatch or Wendigo.

Gino Meekis was hunting grouse several kilometres from Sioux Lookout, Ontario on 3 October alongside his wife and grandson when the family heard the strangest and eeriest sounds, faintly resembling screams. The video, later posted on YouTube, has collected almost a million views, with people left guessing about who or what could have made these sounds.

Meekis, who was later approached for comment by Vice, is an experienced hunter accustomed to different sounds in the Canadian wilderness but even he was confused by the howls.

"When it let out the first scream, I thought it was a moose, but my mind changed when it screamed again and again", the hunter said. He began recording the shrieks almost straight away, as well as his grandson trying to mimic them. The family retreated to their vehicle shortly after the sounds appeared to move closer, as Meekis's wife became particularly scared of the noise.

"I've heard many different animals in the wild but nothing like this. I grew up hunting with my grandfather for the first 12 years of my life", Meekis said.

On November 7, 2019, YouTuber 'Infinite Wolf' shared footage of strange sounds he heard in the skies of Hillsboro, Oregon. He wondered if the noises were 'extra terrestrials', some 'secret government project' or an audio hallucination:

YouTube user 'Shandleyman' heard strange trumpeting sounds outside his home on the evening of October 14, 2019. He reports that 'trumpet/flutes-like' noise lasted 6-7 minutes:

I was in my washroom drying off after a shower and I heard something funny outside. It was a chilly night so I didn't open the window to investigate further.

About 5 minutes later, I noticed the funny noise was changing pitch as if through a chorus effect. I pulled out my phone and started recording. I only caught the tail end of it but the noise lasted a good 6 or 7 minutes.

The chorus effect is barely noticeable in this video but what you can hear is individual trumpets/flutes coming in and going out. If this was a prank, someone had quite the amplifier because this surrounded my city of Port Coquitlam.

On October 3, 2019, strange trumpeting sounds were heard at the Kokol Haven Resort in Kota Kinabalu, Sabah, Malaysia. YouTuber 'lolman 20077' recorded the bizarre sounds on his cellphone:

On August 11, 2019, YouTube user 'Alexandru V. Diaconu' heard strange 'jet noises' in the skies of Iasi, Romania. He uploaded video footage of the event:

It's the second time today that these jet engine sounds are blasting. It is strange because the airport isn't near my location and the planes that fly here are always high enough to not make so much noise.

This time I happened to see some smoke and a new sound following the engine sounds. I am located in Iaşi, Romania and the last time I heard these jet sounds was a couple of years ago, I have a clip posted here from then [June 26, 2014] as well.

YouTube user 'ShadowBandit91' shared footage of 'trumpeting sounds' he heard in the North Carolina sky on July 15, 2019:

So, I was coming into work like normal. I got into work at 3:30am ... no construction, no loud vehicles, nothing on the two major highways. It is quiet when I come into work. I've never heard the sound before or since I've been coming into this building for 11 years (more less.)

In my 28 years of living, I've never heard a sound like this at all. It sounds like mating calls for whales or a really good trumpet player that can throw sound from hell-a-far. It was so loud when I walked into the building, I could hear it before I could even open the warehouse doors and for those of you have not seen videos of my warehouse, you can tell what doors I'm talking about. I could hear that clearly so when I stepped outside this is what I heard:

On July 2, 2019, YouTube user 'iamtheicelord' uploaded footage of strange "unsettling" sounds he heard in the skies of Merrillville, Indiana:

Earlier this summer right in the middle of June 2019 my friend and I stepped outside to grab some air and started hearing these strange low rumbling horn like sounds coming from the distance. We got a couple of them I'm recording. Let us know what you think they were.