A Pennsylvania witness near Philadelphia is reporting seeing green-blue flashes of light that cover the sky above him, according to testimony from the Mutual UFO Network (MUFON) database.

The 28-year-old from Bucks County in southeastern Pennsylvania has seen the sky light up like this several times in the past.

The witness telephoned the UFO Examiner - who urged him to file a report with MUFON so that the experience can be studied with the wider body of evidence collected over time.

"It illuminates the sky for not even a couple of seconds," the witness stated, "it can repeat, but there is no consistency to how it occurs. The one night I reported it may have been the fourth or fifth time it has happened. "

Similar reports have been made to MUFON in the past year. Here are a few examples. On January 16, 2009, we covered: Ohio man reports bright flash of blue light . On February 16, 2009, we covered: Bright flash in the sky. On February 19, 2009, we covered: 'Bright flash of light in sky' reports continue. On March 4, 2010, we covered: Wisconsin witness wonders what 'bright light in the sky' was.

Bucks County is part of the Delaware Valley area, estimated population, 621,342, the fourth most populous county in Pennsylvania.

The following is the unedited and as yet uninvestigated report filed with MUFON. Please keep in mind that most UFO reports can be explained as something natural or manmade. If Pennsylvania MUFON State Director John Ventre investigates and reports back on this case, I will release an update.

Pennsylvania, February 2010 - flash of greenish blueish light lasting few seconds, happens 2 to 3 times sporadically every couple months. MUFON Case # 22350.

It's happened a few times, I usually forget after it happens, kinda like a dream? I guess is the best way to describe it.

But I reported to Roger Marsh that I had seen a flash of blueish greenish light in the sky.

It illuminates the sky for not even a couple of seconds, it can repeat, but there is no consistency to how it occurs. The one night I reported it may have been the forth or fifth time it has happened.

Now it occurs late at night, and no noise is apparent. Just a flashing light, not concentrated in one area, just seemed to brighten the whole sky. I have no idea what it was, and have even forgotten about it, but the last time i saw it, I googled it and that is my story at this time.

I'm in lower Bucks county PA anybody with a similar story I'd love to hear it. The feeling when it happens is that of stop, look around, the hair stands up on your arm, and again no logical explanation.