Earthquakes, despite being a fairly common natural occurrence, still contain some element of the unknown. Earthquakes are often accompanied by unexplained phenomena such as strange noises or flashes of light. These “earthquake lights” have been previously speculated to be the cause of many sightings of mysterious lights, and are thought to be the result of massive static discharge stemming from the friction shifting piezoelectric crystals deep within the Earth.
The strange noises that often accompany earthquakes are still a matter of mystery, however, and a recent earthquake in Eastern Europe shows how little we currently know about this phenomenon.
The United States Geologic Survey reports that shortly before midnight on September 23, 2016, a 5.6-magnitude earthquake shook parts of Romania, Moldova, Serbia, Bulgaria, and Ukraine. Residents of the Roman capital Bucharest reported strong tremors that shook buildings for over thirty seconds.
Fortunately there were no fatalities, but minor injuries and structural damage were reported after the quake. According to first-hand reports posted on Earthquake-Report.com, many residents heard strange noises just before and after the tremors:
At first it was some noise from the outside and the glassware kept shaking, after few seconds the chandelier began to shake, too, it all lasted around 20 seconds.
A similar noise was heard by another resident, but this time in the middle of separate tremors:
Couch moving, loud noise between two waves. Small wooden object fell from shelf and broke. Scary.
Another eyewitness claims to hear similar sounds before every earthquake:
I always wake up perfectly conscious seconds before a significant earthquake. Is their sound coming before the actual vibration? I am at significant distance from epicentre.
Many animals are anecdotally claimed to be able to sense earthquakes before they occur, and some claims are made that some animals can predict quakes weeks in advance. Could this animal premonition be somehow related to these strange noises?