about 3 minutes later I heard a muffled boom, and thought it might be from the fireball, but couldn't be certain.
Persistent train
Observation
Yes
Duration
5s
Length
20°
Remarks
smoke trail that quickly brightened to a glowing green trail behind the fireball
Terminal flash
Observation
Yes
Remarks
the fireball brightened to about -12 magnitude and rapidly disappeared leaving hundreds of green sparkles slowly spreading and falling from the terminal point.