Reports Report 4500cs (Event 4500-2017)

Observer
Name Allan W
Experience Level 4/5
Remarks As an Orange County Park volunteer, I host star parties on the Saturday of the new moon each month. Just as our star party was beginning, we saw this amazing fireball. It originated fairly high up, and was descending SSW. It flared at least three times in its descent. There was immediate fragmentation and multiple colors (predominantly white, yellow and red) at each flair. The last flare was terminal. Subsequently, there were sonic booms and echoes within the surrounding hills. I have witnessed multiple fireballs and this one was the second-most significant (in size and duration). It was witnessed by three other volunteers and multiple park visitors.
Location
Address San Juan Capistrano, CA
Latitude 33° 32' 11.57'' N (33.536548°)
Longitude 117° 33' 11.71'' W (-117.553254°)
Elevation 135.068m
Time and Duration
Local Date & Time 2017-11-18 17:29 PST
UT Date & Time 2017-11-19 01:29 UT
Duration ≈3.5s
Direction
Moving direction From up left to down right
Descent Angle 163°
Moving
Facing azimuth 159.85°
First azimuth 166.92°
First elevation 73°
Last azimuth 169.42°
Last elevation 25°
Brightness and color
Stellar Magnitude -11
Color Orange, Yellow, Light Yellow, White
Concurrent Sound
Observation Yes
Remarks Multiple bangs (sound barriers)
Delayed Sound
Observation Yes
Remarks Echoes of sound barriers
Persistent train
Observation No
Duration -
Length -
Remarks -
Terminal flash
Observation Yes
Remarks There were several flashes (at least three) then a terminal flash. Each flash was triangular and bright yellow with red.
Fragmentation
Observation Yes
Remarks At each flash there was substantial fragmentation (stardust)