en_tn_condensed/isa/05/30.md

will roar ... sea roars

These are the same word translated "growl" in verse 29. Use your language's word for the sound of waves in a storm or heavy rain or some other frightening natural sound.

even the light will be made dark by the clouds

Here darkness represents suffering and disaster. This metaphor can be stated in active form. Alternate translation: "the dark clouds will completely block the light of the sun" (See: rc://en/ta/man/translate/figs-metaphor and rc://en/ta/man/translate/figs-activepassive)