Many others in my area also saw this. I post for a local news facebook page and also posted on there asking if anyone saw this and the comments are still flowing in!
Location
Address
Anacortes, WA
Latitude
48° 29' 45.13'' N (48.49587°)
Longitude
122° 37' 10.92'' W (-122.6197°)
Elevation
50.209m
Time and Duration
Local Date & Time
2017-07-29 21:54 PDT
UT Date & Time
2017-07-30 04:54 UT
Duration
≈20s
Direction
Moving direction
From right to left
Descent Angle
270°
Moving
Facing azimuth
94.02°
First azimuth
139°
First elevation
75°
Last azimuth
43.59°
Last elevation
60°
Brightness and color
Stellar Magnitude
-24
Color
Light Yellow
Concurrent Sound
Observation
Yes
Remarks
a faint, almost muffled boom at the end
Delayed Sound
Observation
No
Remarks
-
Persistent train
Observation
Yes
Duration
10s
Length
2°
Remarks
Once the trail started it got longer and just underneath of the object it began to glow and emit ember-like material and a much shorter trail formed from the glowing embers. it all got brighter and seemed to slow down then eventually faded. a muffled explosion was heard at the end, after it disappeared
