If you look at the western sky as the sun set over Southern California Monday you might have seen a spectacular show of contrails.

'When it's humid at higher altitudes contrails remain visible in the sky longer. Spectacular contrails today - like a tic-tac-toe board!' Ian Gregor, Communication Manager, FAA-Western-Pacific Region told NBCLA in an e-mail.

Contrail (short for "condensation trails")are artificial clouds that are the visible trails of condensed water vapor made by the exhaust of aircraft engines."
http://www.nbclosangeles.com/news/l...ectacular-Show-in-the-Sky-113247609.html



Source: http://www.godlikeproductions.com/forum1/message1319879/pg5


Communications Manager bei Federal Aviation Administration
formerly Supervisor at the Associated Press
Education: University of Toronto
http://www.linkedin.com/pub/ian-gregor/24/425/bb8