The precipitation in the form of water drops of sizes larger than 0.5 mm is known as :

• Different forms of Precipitation are as follows:
i) Rain: It is the most common form of precipitation. In this the water droplet size are larger than 0.5 mm and smaller than 6 mm.

• On the basis of intensity, rainfall is classified as:
Light Rainfall: Trace to 2.5 mm/h
Moderate Rainfall: 2.5 – 7.5 mm/h
Heavy Rainfall: >7.5 mm/h
ii) Snowfall: Snowfall is another important form of precipitation. Snow is made up of ice crystals which usually combine to form flakes. When these flakes reach the earth’s surface then snowfall occurs. The average density of snow is 0.1 g/cm3.
iii) Drizzle: A fine sprinkle of numerous water droplets which have size less than 0.5 mm and intensity of these water droplets is less than 1 mm/hr, then we call them drizzle.
iv) Glaze: When the water droplet (rain or drizzle) come in contact with ground which have a temperature near about 0° C or less than it, these water drops freeze and form ice coating on ground surface which is called glaze or freezing rain.
v) Sleet: It is frozen raindrops which have transparent grains. These are formed when rainfall is at subfreezing temperature. Sleet denotes both rain and snow and the size of sleet is less than 5 mm.
vi) Hail: It is a large size of snow which have size greater than 8 mm. They are in the form of irrigator pellets or lumps of ice.