For a few moments after seeing this entirely unexpected huge fireball and then flash, I briefly thought I should prepare for a shockwave ... I viewed a program once about a large one in Siberia that tore the place up and my mind flashed to that... Glad I saw it now.
Location
Address
Bigfork, MT
Latitude
48° 3' 54.8'' N (48.065222°)
Longitude
114° 4' 49.91'' W (-114.080531°)
Elevation
908.33m
Time and Duration
Local Date & Time
2017-09-04 23:12 MDT
UT Date & Time
2017-09-05 05:12 UT
Duration
≈3.5s
Direction
Moving direction
From up left to down right
Descent Angle
164°
Moving
Facing azimuth
333.14°
First azimuth
320.85°
First elevation
72°
Last azimuth
338.59°
Last elevation
8°
Brightness and color
Stellar Magnitude
-19
Color
Orange, White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
Large (massive) white light flash on horizon at termination
