たいふういっか
clear weather after a typhoon has passed
Also written 颱風一過
Noun
台風一過たいふういっかには、万全ばんぜんの態勢たいせいで臨のぞみたいものです。
For when the typhoon comes by, I want to prepare for it as best as I can.
いやあ、見事みごとに晴はれ渡わたった秋あきの日ひになったね。これが台風一過たいふういっかというやつかね。
What a glorious fall day. This is what they mean by the lovely weather you get after a storm.