# Best answer: Is 15cm of snow a lot?

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## What is considered heavy snowfall?

In the US, the intensity of snowfall is characterized by visibility through the falling precipitation, as follows: Light snow: visibility of 1 kilometre (1,100 yd) or greater. Moderate snow: visibility between 1 kilometre (1,100 yd) and 0.5 kilometres (550 yd) Heavy snow: visibility of less than 0.5 kilometres (550 yd)

## How much snow is considered significant?

Generally, an inch or 2 of snow per hour is regarded as significant. When you start talking about 3-, 4- or 5-inch per hour rates, it becomes a fascinating topic. Occasionally, we can even see snowfall rates of 6 inches an hour or higher.

## What’s the lowest it has to be to snow?

Snow forms when the atmospheric temperature is at or below freezing (0 degrees Celsius or 32 degrees Fahrenheit) and there is a minimum amount of moisture in the air. If the ground temperature is at or below freezing, the snow will reach the ground.

## What is the average amount of snow in a blizzard?

A blizzard is defined as a storm that brings sustained winds or wind gusts of 35 mph or greater and a visibility less than one-quarter of a mile for three consecutive hours. Even though some blizzards may produce snowfall rates of 2-6 inches per hour, the rate of snowfall is not needed for a storm of this nature.

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## What is the highest snowfall rate ever recorded?

A record snowfall of 67.8 inches occurred in Bessans in the French Alps during a 19 hour period between April 5-6, 1959.

## How much does snow compact?

A rule of thumb regarding the weight of light, fluffy snow: One inch of snow weighs 0.26 pounds per square foot. That means for every 6.5 inches of snowfall you’ve got the weight of a compact SUV on your roof. A rule of thumb regarding the weight of heavy, wet snow: One inch of snow weighs 1.66 pounds per square foot.

## How fast can snow fall?

Snowflakes fall at a rate of 1-6 feet per second, in all conditions. Even during high storms, snowflakes still fall in that range of speed.

## What’s too cold to snow?

Turns out, that old saying is wrong — dead wrong. Meteorologist David Neil says it’s just not true that it can be too cold to snow. “The colder the temperature, it reduces the ability for the air to hold water vapour,” said Neil. “But the air still does have the capacity to be able to hold moisture, so it is a myth.”

## Does it have to be 0 degrees to snow?

How cold does it have to be to snow? Precipitation falls as snow when the air temperature is below 2 °C. It is a myth that it needs to be below zero to snow. … The falling snow does begin to melt as soon as the temperature rises above freezing, but as the melting process begins, the air around the snowflake is cooled.

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