I heard sirens a few minutes later; I don't know if it was related.
Location
Address
Lafayette, CO
Latitude
39° 59' 8.21'' N (39.985613°)
Longitude
105° 6' 21.14'' W (-105.105873°)
Elevation
1598.75m
Time and Duration
Local Date & Time
2016-02-18 18:43 MST
UT Date & Time
2016-02-19 01:43 UT
Duration
≈1.5s
Direction
Moving direction
From up to down
Descent Angle
180°
Moving
Facing azimuth
80°
First azimuth
80°
First elevation
70°
Last azimuth
80°
Last elevation
45°
Brightness and color
Stellar Magnitude
-16
Color
White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Unknown
Remarks
-
Fragmentation
Observation
Yes
Remarks
I saw a large bright flash bigger than a full moon about 3/4 up from the horizon, followed less than a second later by a smaller (maybe about a half?) but just as bright flash about halfway up from the horizon below the first flash.
