폭풍은

the storm

→ 폭풍
phrase Rare #25,837
the storm 은 marks 폭풍 as the topic of the sentence and can add contrast.
KO: 폭풍은 내일 올 거예요.
EN: The storm will come tomorrow.

금세 시작해 금세 끝나는 폭풍은 오늘 오지 않았다.

The storm that starts and ends in no time didn’t come today.

폭풍은 끝없이, 끝없이 이어졌다.

The storm went on and on, endlessly.

그 폭풍은 정말 끔찍했어.

The storm was really terrible.

이제 폭풍은 머리 위에 있었다.

The storm was now right overhead.