降水
The rainfall is heavy.
降水が激しいです
The rainfall suddenly turns heavy.
急に降水が激しいです
The rainfall suddenly turns heavy at the park.
公園で急に降水が激しいです
On weekends the rainfall suddenly turns heavy at the park.
週末に、公園で急に降水が激しいです
Especially on weekends the rainfall suddenly turns heavy at the park.
特に週末に、公園で急に降水が激しいです