towering white cumulus cloud into rich blue sky

ascending atmosphere australia australian azure background bank blue bright brightly calvus cerulean clear cloud clouds cloudscape congestus contrast convective cumulonimbus cumulus drifting firmament fluffy formation forming growing heaven heavenwards increasing meteorology natural nature nimbus outside pattern phenomena phenomenon puffy pure scarab-blue scene skies sky structure structuring sunny swelling towering updraft upward upwardly vertical view wallpaper weather white grow