What do you mean by thunder and snow?

Thundering and snowing refers to the phenomenon that snowfall is accompanied by lightning weather.

Thunderstorm, also known as thunder and winter, refers to the weather phenomenon of thunder or thunder when it snows in a certain area in winter. This kind of weather is rare, and the folk proverb says "it thunders and snows in winter", which is a precursor to a snowstorm.

After winter, the temperature in a certain area is warmer, and the warm and humid airflow is relatively strong. The cold air went south and met the warm air mass. Severe temperature difference will make warm and humid air flow rise rapidly, and convection will intensify, forming thunderstorm clouds. At the same time, the air with high humidity will cause rain and snow in winter, which will lead to thunder and snow. When it thunders and snows, the snowfall is generally large, which can reach the level of blizzard.

The reason why this phenomenon rarely occurs is that the low-level air and ground temperature are very low in winter and will not produce strong convection as in summer. So there are not many opportunities to generate lightning.

Lightning and snowfall occurred in different areas.

Kunming 1

On February 28th, 2008, there was a thunderstorm in Kunming, Yunnan Province. On that day, there were many weather phenomena in Kunming, such as light rain, ice particles, showers, hail and thunderstorm, sleet, etc., and the temperature rose and fell abnormally fast. Affected by strong cold air, Kunming experienced six weather changes overnight.

2. Fengyang

20 10 20 10 2100 At around 20: 00, affected by the strong warm and humid air flow in the upper air and the cold air on the ground, a thunderstorm and rain occurred in Fengyang County, Anhui Province.

3. Shanghai

On the morning of February 19, 2065438, there was thunderstorm and snow in Shanghai, and there were different degrees of yellow crowded sections on the subway lines 1, 3, 5, 6 and 8, and four subway lines were restricted. Nearly 30 flights at Hongqiao Airport were affected. Two flights to Beijing, Nanjing, Kunming and Guangzhou were affected.