1. The difference between sleet, freezing rain and snow shower. 2. Will there be freezing rain in Zhejiang? Why?

1. Freezing rain is a kind of disastrous weather in early winter or late winter and early spring, which is composed of ice-water mixture and freezes immediately after colliding with objects with a temperature lower than 0℃. Raindrops below 0℃ can remain supercooled in air with a temperature slightly lower than 0℃, and their appearance is the same as that of ordinary raindrops. When they fall on an object with a temperature below 0℃, they will immediately freeze into a smooth and transparent ice layer, which is called snowball. Severe snowstorms will crush trees and telephone poles, stop communication and power supply, hinder road and railway traffic, and threaten the flight safety of aircraft.

Sleet refers to the weather phenomenon that semi-melted snow (wet snow) or rain and snow come at the same time. It mostly happens when the near-surface temperature is slightly higher than 0℃.

Snowfall with short (sudden) snowfall and sudden start and end time.

Yes, because in winter, rain falls on trees, tall buildings, rocks, telephone poles and other objects, and immediately becomes ice. People used to call it "dripping into ice". This kind of rain is called "freezing rain" in meteorology (its condensate is called "Song Yu"); It is a kind of supercooled water drop (the temperature is lower than 0℃), which is different from the common water drop that people often say. In the cloud, it should be condensed into ice particles or snowflakes, but the necessary freezing nucleus can not be found when freezing, so it becomes supercooled water droplets that can be frozen when touching objects.

"Freezing rain" falls on wires, branches and the ground, and then forms a thin layer of smooth ice. The ice is getting thicker and thicker, and it freezes while flowing in the process of condensation. As a result, a series of stalactite-like icicles and ice spines (commonly known as "ice hanging") were produced. They are crystal clear, and when they meet the sun, they emit colorful light, which is really beautiful! Unfortunately, when its weight exceeds the carrying capacity of the object, tragedy happens. To form "freezing rain", it is often inseparable from specific weather conditions to make supercooled water droplets land on the ground smoothly: the temperature of the air layer about 2000 meters near the ground is slightly lower than 0℃; The temperature of the air layer from 2000 meters to 4000 meters is higher than 0℃, which is warmer; The upper layer is lower than 0℃, so the supercooled water droplets, ice crystals and snowflakes on the upper layer of the cloud fall into the warmer gas layer and become liquid water droplets. Then it falls and enters the frozen layer which is not too thick. When they fall with the wind and are ready to freeze, they have already touched the cold objects in the form of supercooling, and suddenly formed a solid "freezing rain"!