Why does it thunder and lightning in winter?

Because low temperature is not easy to form strong convection, it seldom thunders in winter. Of course, if for some reason, both strong convection and low temperature are met, it may snow and thunder.

The ground temperature is above 0℃ and the humidity is high. On the day of thunder, strong cold air affected the local area. Strong cold air contacts with relatively warm and humid air near the ground, and the lighter warm and humid air is violently lifted, which leads to unstable stratification and the formation of thunderstorm clouds. When the temperature is below 0℃, thunderstorm clouds will thunder.

Thunder requires that the atmospheric stratification is very unstable, strong convection occurs, and there are thunderstorm clouds in the sky. This is easy to achieve in summer because of the strong solar radiation and high ground temperature.

Extended data

Matters needing attention during thunder

1. Don't continue to play at the top of buildings such as the roof, and don't enter isolated shacks, sentry boxes and trees to shelter from the rain. If necessary, you must keep a distance of 3 meters from your torso, squat down and put your legs together.

Swimming, washing clothes, fishing and playing by the river are very dangerous in rivers, lakes and beaches. Don't run in a thunderstorm, let alone drive a motorcycle or ride a bike. Moving fast in a thunderstorm is easy to be struck by lightning.

3. You can't play mobile phones in thunderstorm weather. Try not to call or answer the phone, and avoid using the landline at home, because lightning rods can only protect buildings, but they can't do anything about the thunder waves invading along overhead lines and telephone lines.

Walking barefoot or sheltering from the rain in thunderstorm will increase the possibility of being struck by lightning. Playful children should put on shoes immediately, or put insulators such as plastic on the soles of their feet.

Baidu Encyclopedia-Donglei