Answer: stormiest

AnswerCrossword Clue
STORMIESTMost tempestuous
stormiest(of the sea or sky) Having large waves or dark clouds because of windy or rainy conditions
stormiestFull of angry or violent outbursts of feeling
stormiestSTORMY, boisterous, also STORMFUL
stormiest(of weather) Characterized by strong winds and usually rain, thunder, lightning, or snow