I cannot tell for sure if it was a firework or not but the speed and appearing from high and shooting down, with no immediate noise until a good 20 seconds later makes me believe otherwise.
Location
Address
Boulder City, NV
Latitude
35° 58' 1.92'' N (35.9672°)
Longitude
114° 50' 25.51'' W (-114.84042°)
Elevation
726.602966m
Time and Duration
Local Date & Time
2021-09-04 22:48 PDT
UT Date & Time
2021-09-05 05:48 UT
Duration
≈1.5s
Direction
Moving direction
From up right to down left
Descent Angle
190°
Moving
Facing azimuth
3.79°
First azimuth
0.85°
First elevation
67°
Last azimuth
358.75°
Last elevation
1°
Brightness and color
Stellar Magnitude
-12
Color
Green, Orange, Yellow, White
Concurrent Sound
Observation
Yes
Remarks
Much later, what sounded like a firework.
Delayed Sound
Observation
Yes
Remarks
What sounded like a fireworks pop but in the distance.
Persistent train
Observation
Unknown
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
It went from a white yellow stream to bright green.
