The phrase 'tremendous rain' is correct and usable in written English.
It is typically used to describe heavy or intense rain. You can use it in a sentence like, "The farmers were relieved when the tremendous rain finally came, bringing much-needed moisture to their dry crops."
PITTSBURG — Death and widespread havoc have resulted from tremendous rains yesterday [July 25] in West Pennsylvania, East Ohio and West Virginia.
In the upper Midwest, scorched residents wishing for a little mercy got it in the form of tremendous rains, which cooled off some parts of the region.
As a result, the tremendous rains that occurred just prior to the flood, during which rainfall rates reached 167 mm per hour, the land was unable to absorb a majority of the rain.
Executing a slow turn to the north and then the northwest, Gordon made two more landfalls, on eastern Jamaica and eastern Cuba, while delivering tremendous rains to western Hispaniola.
Mitch made landfall in northern Honduras on October 29 and then moved slowly inland while continuing to produce tremendous amounts of rain.
Over the coming days, this so-called 'atmospheric river' will unload tremendous amounts of rain and snow over the Pacific Northwest.
Last Tuesday, much was made of the fact that a satellite map of rainfall estimates in the Houston area required two new colors to represent the tremendous amount of rain — between forty and sixty inches — that was expected.
"And up at Big Sur, tremendous amounts of rain.
There are several factors that go into the negative effect on coral: 1) the turbulent water breaks it, 2) the days of muddied water reduces the amount of sunlight reaching the algae in coral tissue, 3) the fine suspended particles clog the pores, and 4) the tremendous amount of rain reduces the salinity of the shallow ocean in the immediate area which can stress coral.
I spent the evening ringing agencies and filling in the relevant paperwork while a fourteen year old boy walked around the streets in the pouring rain, in tremendous distress.
