Witnesses said on social media that the meteor was in the northeast sky traveling eastward.
The American Meteor Society (AMS) reported:
Over 63 (so far) witnesses reporteda large fireball over Lancaster County last night (10/14) around 8:25 PM local EDT (0:25 on 10/15 UT.) The fireball was seen from primarily Maryland, New Jersey and Virginia but witnesses from Washington DC, Connecticut, New York and Pennsylvania also reported seeing the fireball.We are currently investigating more reports about this event.
Comment: Forget about funding for advanced warning systems - NASA et al are broke. Look to the past for what is to come!
Celestial Intentions: Comets and the Horns of Moses
The above article was written in the aftermath of the Chelyabinsk event in February, so it's unclear if the British astronomer was referring to a debris field Earth was passing through at the time, or if he meant a larger quantity of debris in general. If the latter, then he has apparently called it correctly because meteor fireball sightings continue to increase month after month!
Yet another fireball lights up early-morning sky in U.S. Midwest, American Meteor Society says September 2013 most active month since it began tracking in 2005