The phrase "a heavy rainfall" is correct and usable in written English.
It can be used to describe a significant amount of rain falling in a specific period.
Example: "The weather forecast predicts a heavy rainfall this weekend, so we should prepare accordingly."
Alternatives: "a torrential downpour" or "a substantial rain".
DANIEL ISLAND, S.C. — Unusual things can bloom after a heavy rainfall.
He added: "Our soils were already saturated starting in March due to a heavy rainfall in early spring.
Still today, after a heavy rainfall, bones and clothes will surface in the mud, and officers will have to be notified to come and collect them.
The climate is moist, warm, and equable, with a heavy rainfall amounting to more than 100 inches (2,540 mm) annually, falling mainly during the summer monsoons.
The report, issued 18 months after the storm, found that, as in yesterday's flooding, weather forecasters had not predicted such a heavy rainfall, and that the transit agency had been caught off guard.
In his under-powered and under-performing McLaren, the Brazilian took advantage of a heavy rainfall at the start of the race to pass four cars by the end of the first lap.
This result is one example of a local heavy rainfall being reproduced by modifying the environment around the rainfall system through the assimilation of observed data.
Recently, the region has experienced a couple heavy rainfall events that exceeded the 50-year return period, during October 1996 and October 1998, which suggest an increase in heavy rainfall along the coast.
However, if the pore-water pressure exceeds the critical value as a result of heavy rainfall, a shallow landslide will be triggered.
As a result of heavy rainfall, a flash flood watch and warning were issued for Cameron, Hidalgo, Kenedy, and Willacy Counties.
Rift Valley Fever Outbreak, Mauritania, 2012 After a period of heavy rainfall, an outbreak of Rift Valley fever occurred in southern Mauritania during September November 2012.
