What does the cold dew, thunder and rain portend?

Cold dew solar terms mean "dew is cold and will condense." Explain that the cold dew is coming, and the simple cold air frequently goes south. Under the influence of single cold air, there will be no strong convective weather. When the cold dew season is followed by thunder weather. It shows that the warm air mass has not subsided at this time, but it is the subtropical high that affects the warm air mass. Under the influence of subtropical high, the cold and warm air masses first met in the air, producing lightning and thunder. It is unusual for the weather to thunder after the cold dew, indicating that the climate change is relatively large and may have a great impact on the weather in the coming year.

Thundering weather is a natural weather phenomenon, which is caused by the violent collision between cold air mass and warm air mass in the air. However, it does not happen in all seasons. Generally speaking, thunder begins with the solar terms, and it begins to ring. Thundering weather is most common in summer due to frequent air mass activities. Of course, autumn is also common, but it usually ends after the autumnal equinox of the 24 solar terms.

There are three periods in the autumnal equinox solar terms, one of which is thunder. That is to say, at the autumnal equinox, the cold mass is stable and the warm mass fades, so that the lightning will gradually disappear. Now it's past the autumnal equinox and the cold dew solar terms.