altocumulus and altocumulus clouds in the sky

altocumulus altostratus anvil arcus asperitas azure banner billow blue cap castellanus cirrocumulus cirrostratus cirrus cloud clouds contrail cumuliform cumulonimbus cumulus daytime dusk field floccus fog fractus grassland haze high homomutatus horizon kelvin-helmholtz lacunosus lenticular mammatus mist morning nature nebulosus nimbostratus nimbus noctilucent ocean opacus orographic perlucidus pileus plain pyrocumulus radiatus reflection sea sky spissatus stratiform stratocumulus stratus sunlight towering translucidus tree undulatus virga wave wind