This is from
www.spaceweather.com: These clouds are near the top of the list for things I would love to see in my sky. Maybe this year!
ELECTRIC BLUE SUNSETS: The 2011 season for noctilucent clouds is gaining steam. Reports of electric-blue sunsets are now coming in from all the countries of northern Europe, Russia, Alaska and Canada. "We had our first sighting of NLCs on June 28th," reports Alan Dyer. He took this picture from Gleichen in southern Alberta:
"It was quite bright at 11:45 pm MDT local time and faded shortly after midnight," he says. "A nice display!"
Back in the 19th century, these mysterious clouds were confined to high latitudes, mainly around the poles. In recent years, however, NLCs have spread toward the equator, appearing in places such as Utah, Colorado, and perhaps even Virginia. Is this a sign of climate change? Some researchers think so. Sky watchers at all latitudes are encouraged to be alert for electric blue just after sunset or before sunrise; observing tips may be found in the 2011 NLC gallery.
