I observed two such events within a few days of eachother and appearing from roughly same location in sky. looking north, they appeared low and disappeared after 2-3 seconds
Location
Address
Napa, CA
Latitude
38° 20' 39.02'' N (38.344172°)
Longitude
122° 19' 11.34'' W (-122.319818°)
Elevation
24.951078m
Time and Duration
Local Date & Time
2018-09-08 20:32 PDT
UT Date & Time
2018-09-09 03:32 UT
Duration
≈1.5s
Direction
Moving direction
From up left to down right
Descent Angle
95°
Moving
Facing azimuth
343.01°
First azimuth
350.09°
First elevation
15°
Last azimuth
35.59°
Last elevation
4°
Brightness and color
Stellar Magnitude
-16
Color
White
Concurrent Sound
Observation
No
Remarks
-
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
Yes
Duration
2s
Length
4°
Remarks
glowing, large ember like pieces of sparkling white light that narrowed into a cornucopia shape as it left the big white glowing incendiary sphere
