The order of the event: 1st: Sonic boom overhead followed by 2nd: bright flash covering my viewing area (6 houses around a cul-de-sac). Was unable to see the actual streaking in the sky.
Location
Address
O'Fallon, MO
Latitude
38° 46' 36.2'' N (38.776722°)
Longitude
90° 45' 30.38'' W (-90.75844°)
Elevation
193.323944m
Time and Duration
Local Date & Time
2019-11-11 21:03 CST
UT Date & Time
2019-11-12 03:03 UT
Duration
≈3.5s
Direction
Moving direction
From down right to up left
Descent Angle
302°
Moving
Facing azimuth
338.78°
First azimuth
331.48°
First elevation
38°
Last azimuth
331.7°
Last elevation
-
Brightness and color
Stellar Magnitude
-11
Color
White
Concurrent Sound
Observation
Yes
Remarks
I heard a loud sonic boom that was followed immediately by a bright flash of light - then it was gone. The boom was before the flash of light - not afterwards. I did not see the comet; a 2-story house blocked my view.
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
The flash was similar to the type that occurs with lightening - one 1-2 sec. flash occurred then it was gone.
