Mysterious, unexplained loud booms like explosions that shake houses have persisted since 2011 around the world. Some people say the explosive boom sounds come like a compression wave from the sky downward on to houses and buildings. Other people insist the explosive booms come from below ground, even cracking cement around houses and slapping the bottoms of shoes. Also sometimes associated with the loud, mysterious booms are metallic scraping and trumpet sounds.
On March 19, 2019, there were simultaneous boom sounds heard in Omaha and Harrison, Arkansas — small towns about 20 miles apart and not far from the Arkansas and Missouri border that is shown on this map as a thin red line dividing the two states.
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