The Sky Trumpets Phenomena is an actual confirmed phenomena described as, "loud booming sounds coming from the sky".
The sounds may vary depending on the location/time. Some describe it as, "loud booms", or, "heavy machinery". On some occasions the sounds will have musical tonality. Some special devices often read auditory spikes when those events occur.
- United States- Chicago, NY, Texas, New Jersey
- Worldwide- Finland, Germany, New Zealand, Australia, Canada
Scientists don't have consensus regarding the origin of this phenomena, however some claim its due to tectonic activity.