(Through expansion and cooling in the day/night, not like the start to a sci-fi horror movie)

Ĭ̖͎̰̎͢͢ṯ̲̫̠̦̫̜̯̙͖̲̱̰̜̼̮͓̻̪̋ͭ̓ͅ͏̵̢̛͡ ̸͈̭͖͎͙̦ͯ͊͂͏͏̵͡c̵̶̨̦͙͙̼͖̦̳̜͔͖̮̞̩̰̱̟̭̠͔̦̼̼̣̘̺ͨͭ́ͦͪ͛͜o͔͉͙̤̝̟͓̥͚̪͂̈́̂ͪ̉ͦ̋́͜m̸̨̟̫̝̤̫̦͓͍̦̥̩͇̘̹̖͔͉̯̘̺̣̫͇̮̈ͥͭ̈́͒̐́̕͜͞ͅe̩͓̣͖̞̪̤̦̹̹̬̫͖̦̦̋͒̄̓́̊s͖̭̣͉̘̫̥͚̣̬̳̤͇̦̝͓̗̗̰̯͊ ̶̷͍͉͉͖̪̖̘̩̟̦͎͔̤͉̬̪͇̱̦̯̤̦͕͈͓͎̳̘̝̦̯̔͞ͅf̱̥̩̯ͩ́ͭ̊̀ͯ̍r̬̗̝͙̪̻̞͙͎̯͎͈̩̹̟̥̖͉̻̰͚̬̠̞̙̘̺̳͗̓̽̾̈̃ͅo̸̡̡̝̺͓̖̦͈͙͓̞̣̮̙̝̟͕̞̹̪̯͍̣̗̭͔͍͚̗̫͈͚͚̲͎͠ͅͅm̝͇̦̳̻͙̗̬͍̟͓̼̠ͣ̍̊͌͘͘͝ ͓̪̦͍̼̞̫͙̞̭̼̭̙̀͒ͫͅb͔̺͇̝̣̗̫͍͓͔̰͓̤̠̘̲̦̪̮̘̯͔͓̪̻̝͎͎̫̙̤̼͑̆̑̈ͧ̽́ͅe͎̹̭̜̪̱̝̣͉͍͑n͚͔̜̝̖̠͈̳͙̘͍̙̞̈́̆̍̈͆͑ͬ́͡͞ͅẽ̺̙̱̙͇̮̰̟͕̺̼̩̟͉͉͙̰̥͔̭͚̩ͯ͐͋ͅa̼̝̬͙͙͚̘̩͇̣̬̭̭̗̭͓̝̮̳̥ͬ͆ͅͅͅt̸̡̲͕̣͙͖̻̹̤͓̞̘͍̤̠͙͙̖̙͚̞̽͂̍ͭ̒ͭ̈́͘͡h̫͇̼̯̱͖̝̯̘͉͙͉͈̱̦͕͕̽̑̇ͫͥ̀̕͢͟͝

I’m kind of surprised the sensor picked that up. That’s like a seismometer detecting up your house creaking from a block down the street.