the calm before the storm

US /ðə kɑːm bɪˈfɔːr ðə stɔːrm/
UK /ðə kɑːm bɪˈfɔːr ðə stɔːrm/
"the calm before the storm" picture
1.

ketenangan sebelum ribut

a period of unusual quiet or inactivity before a period of great activity, excitement, or trouble

:
Everyone was quiet, but I knew it was just the calm before the storm.
Semua orang senyap, tetapi saya tahu itu hanya ketenangan sebelum ribut.
The quiet morning was the calm before the storm of the busy workday.
Pagi yang sunyi itu adalah ketenangan sebelum ribut hari kerja yang sibuk.