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Everyone knows that the snowfall occurs below 0° C, but do you know, why it occurs, how do they fall,
Let's know how,
It's a myth that the temperature need to be below the zero to fall. Precipitation falls as the snow when the air temperature is below 2° C. When combined with strong winds, a snowfall can create blizzards and drifts.
Snow falls when the tiny ice crystals in clouds stick together to become snowflakes. If the crystals are enough to stick together, they will become heavy enough to fall to the ground.
Snowflakes that descend through moist air that's slightly warmer than 0° C, this flakes starts to melt around the edges and stick together and produces more bigger flakes than before.
Snowflakes that falls through cold and dry air produce powdered snow which do not get stick together. Snow is formed when the temperatures are low and the air is moist in the form of tiny ice crystals.
If the temperature is above or warmer than 2° C then the snowflakes will melt and fall as sleep rather than snow and if