Reports Report 3152ab (Event 3152-2014)

Observer
Name Robert B
Experience Level 1/5
Remarks Sitting at desk on 39th floor of apartment building facing due south. Noticed large bright blue/white object falling almost directly down, to the right (i.e., west) of the Chicago skyline. Object had a yellow-ish, fire-y tail. At first, I thought it was a shooting star, but after a second, I realized it was much too large. From my vantage, the object sudenly disappeared at about halfway "down" the height of the Willis (i.e., Sears) Tower. Lasted perhaps 3-4 seconds. I've never seen anything like it. Immediately started googling online to see if anyone else had seen it but couldn't find any accounts. The color was almost the same color one sees during when an electric grid blows out and flashes, but this was less green and more blue.
Location
Address Chicago, IL
Latitude 41° 56' 42.01'' N (41.945003°)
Longitude 87° 38' 33.04'' W (-87.64251°)
Elevation 179.763962m
Time and Duration
Local Date & Time 2014-11-17 22:50 CST
UT Date & Time 2014-11-18 04:50 UT
Duration ≈3.5s
Direction
Moving direction From up to down
Descent Angle 180°
Moving
Facing azimuth 183.82°
First azimuth 187.01°
First elevation 62°
Last azimuth 183.24°
Last elevation 18°
Brightness and color
Stellar Magnitude -20
Color Blue, Light Blue, Light Green, Light Yellow
Concurrent Sound
Observation No
Remarks -
Delayed Sound
Observation No
Remarks -
Persistent train
Observation No
Duration -
Length -
Remarks -
Terminal flash
Observation Unknown
Remarks -
Fragmentation
Observation No
Remarks -