Thursday, June 11, 2015

Noctilucent Clouds Visible in CONUS


NOCTILUCENT CLOUDS REACH THE USA: The northern season for noctilucent clouds began on May 19th when NASA's AIM spacecraft spotted a patch of electric blue over the Arctic Circle. Since then the clouds have been spreading south. This week, for the first time in 2015, they crossed the border into the lower 48 US states.  Seeded by meteoroids and floating near the edge of space, these eerie-looking clouds are increasingly visible to mid-latitude observers, possibly as a result of climate change.  Check today's edition of for the latest sightings and observing tips.