The fireball exploded in the air 620 miles east of the coast of Brazil according to NASA, as reported in the UK Daily Mail.com, February 22, 2016. This is the largest object of its kind since the February 2013 Chelyabinsk object reported here earlier.
According to NASA, the fireball released energy equal to 13,000 tons of TNT or an amount equivalent to the Hiroshima atomic bomb blast in 1945. This was 40 times less than the Chelyabinsk fireball (which injured 1600 people.) The event was picked up by electronic sensors; it’s doubtful that anyone saw it
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Map courtesy UK Daily Mail