Cloudburst
Sudden heavy rain is called a Cloud Burst of a Squall.
downpour
A downpour.
(A downpour is a heavy drenching rain.)The overnight downpour was so intense that flooding occurred in the lowest part of the village.
Drenching Downpour Heavy precipitationPouring Raining Cats and dogs.
Because the drains were blocked with leaves, a heavy downpour caused the roof to collapse. A downpour in the desert can cause flash floods many miles away.
torrential downpour
downpour?
Downpour
Heavy Downpour
If it is hot, it feels very good but when it rains, it will be a heavy downpour.