# Frequent question: How big can a rain drop get?

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## What is the largest rain drop?

The largest raindrops ever directly recorded measure a minimum of 8.6 mm (0.338 in) across. They have been detected on two occasions; September 1995 (Brazil) and July 1999 (Marshall Islands). The raindrops were imaged while falling by a laser instrument on board a research aircraft in studies by Professor Peter V.

## What influences the size of raindrops?

A variety of factors influence the size of raindrops as it falls from the cloud. Turbulence and wind is a big factor when it comes to raindrop sizes. A turbulent atmosphere means raindrops are blowing around and colliding with other raindrops. When two raindrops crash into each other, it creates a bigger raindrop.

## Why don t raindrops get arbitrarily large?

So why can’t raindrops grow to arbitrarily large sizes? … Ultimately the water drop will become large enough to fall to earth. When this happens, the surface tension of the water that keeps the drop more or less spherical is partially overcome by the airflow pressure on its lower surface as it falls.

## How many raindrops are in a cloud?

Problem 3 – To the nearest 1000, about how many large cloud droplets have to combine to form one typical raindrop? Answer: N = Mass of raindrop/mass of large droplet = 0.004 grams/5.2×10-7 grams = 7692 or about 8000 large droplets.

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## How far does the average raindrop fall?

We shall assume a cloud base of 2,000 feet. The largest raindrops, those associated with thunderstorms, are 0.2 inches in diameter and they fall at about 20 mph. If the base of the cloud from which they are falling is at 2,000 feet above your head, it takes those drops 1.1 minutes to reach the ground.

## When the drops of rain are very small it is called?

Drizzle is a light liquid precipitation consisting of liquid water drops smaller than those of rain – generally smaller than 0.5 mm (0.02 in) in diameter.

## Are rain drops all the same size?

When it’s raining, it may seem that every raindrop is the same–same size, same basic shape, same wetness. But if you could compare and measure raindrops, you’d find that they’re not all the same size or shape. In fact, raindrops vary from one to six millimeters in diameter and come in all sorts of shapes.

## What is the maximum diameter of the raindrop?

“A raindrop may have a maximum diameter of 0.25 centimeter.”

Diameter of a Raindrop.

Pellet Size Category Diameter Range Percent of Total (867) Drops
Medium 0.067–0.125 in. 1.7–3.2 mm 29
Large 0.143–0.200 in. 3.6–5.1 mm 16
Very Large > 0.200 in. > 5.1 mm 4