(KUTV) - Facebook came alive Tuesday with posts from Utah residents wondering what mysterious loud booms were that they heard Tuesday, with some people claiming they also felt the earth shake.
KUTV received inquiries from its viewers from Herriman, Tooele, West Valley, Sandy and South Jordan in Messenger asking for information about the booms.
Authorities from the Utah National Guard and Tooele Army Depot said they knew nothing about the booms' cause but had also received resident reports of the disturbing, loud noises.
Then a tweet from the University of Utah Seismograph Stations provided the answer.
Hill Air Force Force was conducting training exercises involving jets at Utah Test and Training range in northwestern Utah.
"Nearby residents may experience shaking or hear sonic booms," the tweet stated.
Sonic booms are loud, explosive noise caused by the shock wave from an aircraft traveling faster than the speed of sound.
UPDATE: Hill Air Force Base reports off-station aircraft conducted flying training in a tweet that is "most likely source of reported noise."