Reports Report 451gd (Event 451-2015)

This report has been linked to the following event: Event 451-2015
Observer
NameAngela B
Experience Level2/5
RemarksWhat an amazing and unusual experience! Four of us witnessed this large and bright display, having time to ask each other what on earth is that and getting closer to the window and outside to see it.
Location
AddressColville, WA
Latitude48° 35' 54.5'' N (48.6°)
Longitude 117° 52' 57.57'' W (-117.88°)
Elevation587.22m
Time and Duration
Local Date & Time2015-02-23 21:57 PST
UT Date & Time2015-02-24 05:57 UT
Duration≈20s
Direction
Moving directionFrom down right to up left
Descent Angle271°
Moving
Facing azimuth90.15°
First azimuth98.99°
First elevation50°
Last azimuth61.3°
Last elevation34°
Brightness and color
Stellar Magnitude-13
ColorPink, Blue, Light Blue, Yellow, Light Yellow
Concurrent Sound
ObservationNo
Remarks-
Delayed Sound
ObservationNo
Remarks-
Persistent train
ObservationYes
Duration1s
Length
RemarksIt looked like mostly one object at first, then stretching into a group of separate objects streaking across the sky with trails and then they started to spread a bit, like when a fireworks sparkles start to drop and separate. Two were very far behind. I could see through the window even though we were watching TV this blue-ish bright long streaking thing but seemingly very slow and we had time to all look and I went out on the deck and watched it separate and disappear behind Old Douglas Mountain.
Terminal flash
ObservationNo
Remarks-
Fragmentation
ObservationYes
RemarksAs described above, it looked like mostly one object and then as it continued it became 12 or so objects like the big sparks from a large firework on the 4th of July, eventually arcing downward a bit and falling slowly like firework sparks do.