- Hail is a type of solid rain made up of balls or lumps of ice.
- Storms that produce hail which reaches the ground are known as hailstorms.
- Conditions for Hailstorms to occur?
- Highly developed Cumulonimbus clouds need to be present. These are the massive anvil or mushroom-shaped clouds that are seen during thunderstorms which can reach heights up to 65,000 feet.
- There must be strong currents of air ascending through these clouds. These currents are commonly known as updrafts.
- The clouds will need to contain high concentrations of supercooled liquid water.
- How are Hails formed?
- It begins as a water droplet that is swept up by an updraft inside of a thundercloud.
- Other supercooled water droplets which are already present inside the cloud will adhere to the water droplet’s surface, forming layers of ice around it.
- As the water droplet reaches higher elevations within the cloud, it comes into contact with more and more supercooled particles.
- The hail embryo will grow larger and larger as it reaches higher altitudes in the updraft.
- Finally, it will reach a size and weight where gravity will begin to act on it and pull it down.
Q1) What is a Sleet?
Sleet is defined as pellets of ice that fall as a form of precipitation.Sleet is a type of precipitation distinct from snow, hail, and freezing rain. Sleet occurs when falling snow melts and then refreezes before it hits the ground.