MétéoMédia - These eerily beautiful clouds are having a big year
These eerily beautiful clouds are having a big year Caroline Floyd Eerily beautiful clouds glowing in the twilight sky are having a banner season in 2019. Noctilucent clouds (literally, 'night-shining clouds') -- normally an elusive summertime visitor to only the northern fringes of the Northern Hemisphere -- seem to be on the move farther south this summer. While that makes for some rare and excellent viewing, the reason for the shift is less encouraging. Early June to mid-July is prime time for noctilucent clouds (NLCs) which -- under the right conditions -- appear as wispy, softly glowing...