晴天 せいてん らん気流 きりゅうじゃありませんでした
seitenrankiryūjārimasendeshita

Noun
Desu Copula

The polite, past negative form of 晴天乱気流

1. It wasn't clear skies and turbulence.; It wasn't a clear sky with turbulence.

Past/Perfective
Negative
Polite
Terminal Form