Odd Blue Streak in the Sky at Sunset – Tucson, AZ – Sep. 25, 2012 [video]

Sheila Aliens
September 27, 2012

Not my video. Original uploader: Beelzebark
link: http://www.youtube.com/watch?v=kukQILSnXyM

I didn’t see this but I heard about it when it was happening (my mum texted me that there was a weird blue BEAM in the sky). Went outside and couldn’t see anything from my vantage point

Some form of crepuscular or anti-crepuscular ray, perhaps?