Reports Report 3068gu (Event 3068-2017)

This report has been linked to the following event: Event 3068-2017
Observer
NameJoe W
Experience Level2/5
RemarksThat was awesome, even though I didn't directly observe it. The flash and subsequent boom were very similar to lightning and thunder.
Location
AddressNelson, British Columbia (CA)
Latitude49° 29' 20.89'' N (49.49°)
Longitude 117° 17' 15.17'' W (-117.29°)
Elevation623.86m
Time and Duration
Local Date & Time2017-09-04 22:15 PDT
UT Date & Time2017-09-05 05:15 UT
Duration≈1.5s
Direction
Moving directionFrom down left to up right
Descent Angle69°
Moving
Facing azimuth-
First azimuth330°
First elevation60°
Last azimuth-
Last elevation60°
Brightness and color
Stellar Magnitude-24
ColorWhite
Concurrent Sound
ObservationNo
Remarks-
Delayed Sound
ObservationYes
RemarksAbout 1 minute after the bright light flashed like lightning there was a single boom just like a thunderclap that rattled things for a split second. I couldn't really see the angles of the flash at the start or the end, because I was inside the house, but near an open window. So discount my "angles" measurement. I am a weather nut, so even though I knew there was no chance of rain or thunder, I quickly glanced at radar on computer and saw no echoes. Then I thought it must have been a transformer blowing, but I knew it couldn't be that. Then within 30 minutes I looked at the "Nelson, BC" Facebook post and saw they were already soliciting reports from people who heard the boom and saw the flash.
Persistent train
ObservationNo
Duration-
Length-
Remarks-
Terminal flash
ObservationNo
Remarks-
Fragmentation
ObservationNo
Remarks-