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203636 sightings reported...
and growing

Erie/Longmont, CO

Sighted on Friday 24. August 2012
Reported on
Shape: Other | Duration: 2 seconds
Source:

Bright greenish light that lit up entire skybright light that turned the sky green colored. East of Boulder, looked like it came from the ground but lit the entire sky green. not a strobe, nor did it just create a beam. the entire sky turned green, i thought it may have been lightening at first but was too greenish. it happened twice, both times pretty slow.

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Location Sighted on Shape Duration
Location Sighted on Shape Duration
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