A loud sonic boom was heard and felt in Alabama - Blount, Jefferson, Walker, Cullman, Talladega, Calhoun, Clay, Winston, Randolph, Tuscaloosa and even Columbus, Mississippi - shortly after 13:40 CST (19:40 UTC) November 14, 2017. This time NASA could only say that the big Boom over Alabama is a Mystery.
NASA scientists in Huntsville, Alabama said the origin of the mysterious boom that rocked central Alabama on Tuesday "remains unclear," but they have already ruled out that the boom was associated with a fireball. Although yesterday the sky was on fire.
Loud boom, recorded by the US Geological Survey's Lakeview Retreat. This is clearly visible on the graph. The reason for the boom is still unknown.
This is what officials still know:
1. Seismic data from the US Geological Survey's Lakeview Retreat near Centerville, Alabama shows a fairly loud boom around 13:39 CST.
2. Then, in southern Ontario, 965 kilometers (600 miles) from North Alabama, "a corresponding signal was detected starting at 14:02 and lasting about 10 minutes." NASA said the signal "could be triggered by a fireball, a larger supersonic aircraft, or a ground explosion."
3. Eyewitnesses reported a contrail, and NASA said it could be a meteorite or an airplane.
Promotional video:
The phenomenon of the mysterious Boom phenomenon continues.