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Around 11 p.m. Christmas Eve, people reported hearing a loud “boom” in Toronto, Newmarket, Aurora, Belleville, Richmond Hill, and Sutton. Not only was the boom heard, but it rattled houses, leaving many to believe that a tree had fallen on their rooftop. But so far, there hasn’t been an official explanation.
Even more mysterious is that some people reported hearing booms at other times during the day as well, ranging from 2 p.m. to 6 p.m. to 1 a.m. on Christmas morning.
The United States Geological Service (USGS) didn’t record any seismic event in Ontario yesterday, and there were no reports to the American Meteor Society.
Cyroseisms are rare, localized seismic events that occur when a sudden drop in temperature freezes the groundwater, which then expands and cracks the soil and rock. The crack will release a sudden burst of explosive energy, resulting in a loud noise and the shaking of the ground. They usually occur between midnight and dawn.
They are cryoseisms, also known as frost quakes, and can only be felt close to the body of water from which they originate. Such ice cracks can sometimes be detected by a seismograph if it is located close to the body of water.
AFewGoodWomen
Phew...I thought that maybe news was being reported from "Grand Theft Auto" land...
Cool phenomena though.
Nice thread.edit on 26-12-2013 by AFewGoodWomen because: (no reason given)
TheStev
reply to post by HardCorps
I'd love for this to be a mystery, but it seems pretty likely that these were actually frost quakes.
They are cryoseisms, also known as frost quakes, and can only be felt close to the body of water from which they originate. Such ice cracks can sometimes be detected by a seismograph if it is located close to the body of water.
Source
That would explain why nothing was registered with the USGS. Temperatures were incredibly low in the area at the time, which means the conditions were right. Cryoseisms are rare, but not unheard of, probably largely due to the localised nature. Unless they occur near seismographs they just don't get recorded.edit on 26-12-2013 by TheStev because: (no reason given)
AFewGoodWomen
Phew...I thought that maybe news was being reported from "Grand Theft Auto" land...
Cool phenomena though.
Nice thread.edit on 26-12-2013 by AFewGoodWomen because: (no reason given)
Associated "boom" sound noted long enough after that I think there may have been a second, closer object I didn't observe, and local news reports mention other similar sounds across my local region around that time the same night.
Sorry for putting a lot of words in this field, but I want to be clear here, because I think there were multiple fireballs and that I only saw one of them: The fireball was yellowish orange, brighter and larger than any I've seen before ("width"-wise). It didn't look like the typical thin, long, pale, sparse meteors I've seen in seasonal meteor showers. My initial reaction would be to call it a small fireball, like a miniature version of those videos from Russia this year. My location is at approximately 44°5'51"N, 78°17'33"W (Rice Lake, Southern Ontario, Canada), and the meteor was North East of me, about 30 to 40 degrees above the horizon (so, in the top right corner of the Big Dipper's dipper). From my point of view, the meteor was moving mostly "downwards", with east-to-north motion, with the angle to the horizon something between 45 and 80 degrees. It travelled a relatively short distance before burning out: probably about 2 diameters of the moon, maybe a bit more. I viewed this from my parent's front driveway, during the regional black-out from the ice storm, so there was little artificial light. There was no terminal flash, but Here is where this gets interesting: Between 5 and10 minutes later I had gone back into the house and there was a loud boom, and the house frame shook a bit. It was a single boom, sharp, without a rumble following. Our initial thought was tree branch had fallen on our roof, but we found nothing. The boom was also heard by our neighbours, which we learned the next day. Obviously, I wouldn't expect the meteor I had seen to have caused that specific sound, because the time was too long for it to have simply been distance-lagged. However, today I saw a report that other people had heard similar booms across the Toronto area, around the same time that night. I've linked the news story below. We're about 100km east of Toronto. globalnews.ca... So, I thought I would report what I saw, because I'm wondering if the boom I heard was from a second meteor that was much closer to me than the one I saw, and perhaps part of a cluster that had come down over Southern Ontario that night and caused the other reports of similar sounds. I hope this can help in some way. The news report said nothing had been reported, so I wanted to make sure this reached you. Maybe someone will be able to put this together. If so, I'd love to hear how it turns out!