Translation of "Torrencial" in English

Receio que terei de desmarcar a aula de hoje haja vista a torrencial chuva.

Having seen the torrential downpour, I'm afraid I'll have to reschedule today's class.

O poeta estava sentado sozinho em seu pequeno quarto, numa noite muito tempestuosa; o vento rugia lá fora e caía uma chuva torrencial.

The poet was sitting alone in his own little room on a very stormy evening; the wind was roaring outside, and the rain poured down in torrents.