Lots of reports of people seeing this all over BC & AB (Canada) & Montana & Idaho. From my window it was at least the size of half an iPhone 7, like a 2" x 2" ball.
Location
Address
Okotoks, Alberta (CA)
Latitude
50° 42' 20.15'' N (50.705596°)
Longitude
113° 57' 15.11'' W (-113.954198°)
Elevation
1061.429077m
Time and Duration
Local Date & Time
2017-09-04 23:15 MDT
UT Date & Time
2017-09-05 05:15 UT
Duration
≈3.5s
Direction
Moving direction
From up left to down right
Descent Angle
137°
Moving
Facing azimuth
256.81°
First azimuth
261.16°
First elevation
29°
Last azimuth
273.11°
Last elevation
25°
Brightness and color
Stellar Magnitude
-20
Color
Light Blue, White
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
Yes
Duration
2s
Length
5°
Remarks
Glowing white tail, that sparkled
Terminal flash
Observation
Yes
Remarks
There were 2 flashes white like lightning, back to back, maybe a second between them.
