CLOUDS DESCEND TO MID-LATITUDES: Last night, noctilucent clouds
descended to their lowest latitude of the 2016 season. Electric-blue
ripples were sighted over nearly a dozen European countries as far
south as 46 degrees N. These formerly-Arctic clouds are spreading as a
result of climate change and may soon be spotted over the continental
USA. Visit http://spaceweather.com for photos and observing tips.