I've seen many Pittsburgh fireworks shows - it didn't look like the white flash fireworks often seen in those shows. It looked more like something moving really fast that was going to crash into the river and then popped before it got there. There was not a fireworks show going on either.
Location
Address
Pittsburgh, PA
Latitude
40° 30' 9.75'' N (40.502708°)
Longitude
80° 4' 43.96'' W (-80.078877°)
Elevation
221.953278m
Time and Duration
Local Date & Time
2013-09-27 23:30 EDT
UT Date & Time
2013-09-28 03:30 UT
Duration
≈3.5s
Direction
Moving direction
From up to down
Descent Angle
180°
Moving
Facing azimuth
233.26°
First azimuth
230.12°
First elevation
-
Last azimuth
233.53°
Last elevation
11°
Brightness and color
Stellar Magnitude
-20
Color
White
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
Yes
Duration
5s
Length
45°
Remarks
White trail descending then a bright "pop"
Terminal flash
Observation
Yes
Remarks
White trail descending to a larger white flash. I was in my car so I couldn't hear anything.