NUFORC Sighting 100757

Occurred: 2013-08-03 23:00 Local
Reported: 2013-08-04 00:45 Pacific
Duration: ~3 minutes
No of observers: 1

Location: Monrovia, CA, USA

Shape: Light
Characteristics: Lights on object, Changed Colo

Color changing light quickly bobbing vertically and hovering over Monrovia CA

I feel that I have pretty good depth perception, even at night, so I would describe it as having been between 100-300ft off the ground over about Foothill and Myrtle and rising/falling arythmically at a rate of about 100-200fps (around 100mph across only a couple hundred feet before pausing and changing direction) and sometimes hovering absolutely motionless. It was bright white while rising and bright blue while falling, alternating red>blue>white while hovering, and all color transitions were extremely smooth. Since I was viewing it across an arc of about 120 degrees, I feel confident saying there was no "looping" involved (like a conventional aircraft) as through the entire 120 degrees it appeared to move absolutely vertically "bobbing" up and down only. I didn't see any police helicopters or other aircraft heading to the area, so I'm guessing no one is treating it like a national emergency or anything, but I'd sure like to know if there is a mundane, man-made explanation for this...

NUFORC Note:

Witness elects to remain totally anonymous; provides no contact information. PD

Posted 2013-08-30