Verses with the word tempestuous in the Old Testament (3 verses):

Psalms 50:3
Our God shall come, and shall not keep silence: a fire shall devour before him, and it shall be very tempestuous round about him.

Jonah 1:11
Then said they unto him, What shall we do unto thee, that the sea may be calm unto us? for the sea wrought, and was tempestuous.

Jonah 1:13
Nevertheless the men rowed hard to bring it to the land; but they could not: for the sea wrought, and was tempestuous against them.