NASA: Fireball seen over US 'probably a yard across'

Bill Cooke of NASA's Meteoroid Environmental Office said the widely-reported flash in the sky was probably "a single meteor event." He told the Associated Press:

[It] looks to be a fireball that moved roughly toward the South East, going on visual reports.

Judging from the brightness, we're dealing with something as bright as the full moon.

The thing is probably a yard across. We basically have [had] a boulder enter the atmosphere over the North East.

– Bill Cooke, nasa

The reports are consistent with a meteor that hit in Russia's Ural Mountains last month, only smaller.

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'Meteor' seen in eastern US

There have been sightings of a possible meteor on the US Eastern Seaboard.