my husband and I both witnessed it. We can't comment on sound because we were in a noisy traffic jam with our windows rolled up. Lots of cars were honking. But I feel privileged and in utter awe of what we happened to be in the right place at the right time to experience viewing. I've never seen anything like it. My husband says he thought it was a meteor.
Location
Address
Ontario, CA
Latitude
34° 5' 13.74'' N (34.087151°)
Longitude
117° 39' 59.75'' W (-117.666598°)
Elevation
352.596436m
Time and Duration
Local Date & Time
2015-07-12 00:22 PDT
UT Date & Time
2015-07-12 07:22 UT
Duration
≈3.5s
Direction
Moving direction
From right to left
Descent Angle
270°
Moving
Facing azimuth
90°
First azimuth
135°
First elevation
30°
Last azimuth
135°
Last elevation
30°
Brightness and color
Stellar Magnitude
-20
Color
Bright white
Concurrent Sound
Observation
Unknown
Remarks
-
Delayed Sound
Observation
Unknown
Remarks
-
Persistent train
Observation
No
Duration
-
Length
-
Remarks
-
Terminal flash
Observation
Yes
Remarks
It was as bright as a 4th of July sparkler and made an arc shaped trajectory, sparking as it went: much more vivid and longer viewed than a "shooting star". I got very excited and thought a rocket was coming in or something. it became bigger /fatter/brighter towards the end and then broke into millions of little Sparks and disappeared as quick as it came.
