風が強く

windy

→ 風
phrase Rare #42,050
windy The く-form of 強い, used before another verb or clause. 風が強く吹く means “the wind blows strongly,” while 風が強くなる means “it becomes windy.”
JA: 今日は風が強く、外で遊べません。
EN: It's windy today, so we can't play outside.

一晩中風が強く吹いていた

The wind blew hard all night.

風が強く吹いている

The wind is blowing hard.

風が強くなった

The wind picked up.

風が強く吹いたので、彼らは公園で遊べなかった

Because the wind was blowing strongly, they couldn't play in the park.