Sky where the convectional rain is likely to fall (calm before the storm)

प्रकृति-लैंडस्केप / Sky where the convectional rain is likely to fall (calm before the storm)
परिस्थितिकी / Sky where the convectional rain is likely to fall (calm before the storm)
बनावट-पृष्ठभूमि / Sky where the convectional rain is likely to fall (calm before the storm)