a dark, ominous sky dominated by a large, menacing cloud. indicating the potential for severe weather.

background sky nature backgrounds landscape light space white cloud black blue sunset rain global natural day season weather climate air atmosphere wind meteorology storm cumulus condensation steam thunderstorm heaven motion overcast forecast cumulonimbus moisture outdoor outdoors altocumulus altostratus nimbostratus prediction geography float clouds contrast threatening dark ominous green hue severe dominated large menacing cloud indicating potential weather smaller visible distance contrasting overwhelming darkness