One of my co-workers was in his house and saw a flash outside at the same time - he went to the sliding door but saw nothing.
Location
Address
Ventura
Latitude
34° 17' 3.31'' N (34.284253°)
Longitude
119° 13' 27.64'' W (-119.224345°)
Elevation
116.047646m
Time and Duration
Local Date & Time
2012-10-31 06:23 PDT
UT Date & Time
2012-10-31 13:23 UT
Duration
≈1.5s
Direction
Moving direction
From up left to down right
Descent Angle
135°
Moving
Facing azimuth
120°
First azimuth
120°
First elevation
55°
Last azimuth
290°
Last elevation
50°
Brightness and color
Stellar Magnitude
16
Color
White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
Yes
Duration
7s
Length
7°
Remarks
Glowing that faded out; wiggly but rather straight. Then faded to invisible.
Terminal flash
Observation
Yes
Remarks
I saw the flash while looking away from the sky. I thought a street light was flickering but it was about as bright as a flash from a camera. I turned to see, and I saw the fading trail only. I did not see the comet at all.