Pittsburgh New Year’s Day meteor explosion equivalent to 30 tonnes of TNT, says Nasa

If not for clouds, the half-tonne fireball would have been easily visible in the day, maybe about 100 times the brightness of a full moon

A meteor that caused an earthshaking boom over suburban Pittsburgh on New Year's Day exploded in the atmosphere with an energy blast equivalent to an estimated 30 tonnes (27,200kg) of TNT, officials said.

The National Weather Service in Pittsburgh initially responded, suggesting the most likely explanation was a meteor explosion" as people took to social media in search of answers.