billowing

adj.	1.	rising in billows.
	2.	stormy; affected by storms; - of weather, used prenominally.

Adj.	1.	billowing - moving in surges and billows and rolls; "billowing smoke from burning houses"; "the rolling fog"; "the rolling sea"; "the tumbling water of the rapids" Synonyms: tumbling, rolling
	2.	billowing - characterized by great swelling waves or surges; "billowy storm clouds"; "the restless billowing sea"; "surging waves" Synonyms: billowy, surging

moving, rolling, tumbling