# What is 20mm rain?

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## Is 20 mm of rain alot?

Slight rain: Less than 0.5 mm per hour. Moderate rain: Greater than 0.5 mm per hour, but less than 4.0 mm per hour. Heavy rain: Greater than 4 mm per hour, but less than 8 mm per hour. Very heavy rain: Greater than 8 mm per hour.

## How much is 25 mm of rain in inches?

Rainfall amount is described as the depth of water reaching the ground, typically in inches or millimeters (25 mm equals one inch). An inch of rain is exactly that, water that is one inch deep.

## How much is a Millimetre of rain?

One millimeter of rainfall is the equivalent of one liter of water per square meter. The standard way of measuring rainfall or snowfall is the standard rain gauge, which can be found in 100-mm (4-in) plastic and 200-mm (8-in) metal varieties.

## What is heavy rainfall mm?

Rainfall. … A rainfall total of 0.2 mm is quite a small amount of rain, and unlikely to have much impact on many activities. Therefore, days of rain greater than or equal to 1 mm, 10 mm, and 25 mm are often used as indicators of the number of “wet” days.

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## How do you convert mm of rain to liters?

In terms of volume, with a rainfall of 10 mm, every square metre of the field receives 0.01 m, or 10 litres, of rain water. With a rainfall of 1 mm, every square metre receives 1 litre of rain water. A rainfall of 1 mm supplies 0.001 m3, or 1 litre of water to each square metre of the field.

## What does rain in mm mean?

Rain is measured in a few ways. Meteorologists measure rain volume received in a unit of time. … However, 1 mm of rain refers to the “depth” of rain that would be received in 1 meter² (m²) or a square of one metre in length and width. So 1 mm of rain translates to 1 litre of water in a single metre square.

## How many inches of rain are 30 mm?

How many inches is 30mm of rain?

20 millimeters in inches = 0.7874 900 millimeters in inches = 35.4331
30 millimeters in inches = 1.1811 1000 millimeters in inches = 39.3701
40 millimeters in inches = 1.5748 10,000 millimeters in inches = 393 7008
50 millimeters in inches = 1.9685 100,000 millimeters in inches = 3937.0079

## What does 25mm mean?

25mm = almost 1 inch.

## How Much Is 70mm of rain in inches?

Inches to Millimetres Conversion Table – 1 to 200 inches

Inches (in) Millimetres (mm)
69 1752.6
70 1778
71 1803.4
72 1828.8