火災 かさい積乱 せきらん くもじゃなかったです
ka saiseki ran kumojanakattadesu

Noun
Desu Copula

The polite, past negative form of 火災積乱雲

1. It wasn't a firestorm.; It wasn't a cumulonimbus cloud.

Past/Perfective
Negative
Polite
Casual Register