The difference between sunny to cloudy standard and cloudy standard should be explained and given by professionals.

"Sunny" and "cloudy" are similar but different.

Careful citizens find that when the weather forecast is "sunny" or "cloudy", the sun is actually shining, and it seems that "sunny" and "cloudy" are almost the same.

In meteorology, "sunny" refers to the phenomenon that there are no clouds or scattered clouds in the sky, but the cloud amount is less than 10%. Life also means that the rain disappears, or there are clouds but there is still sunshine. "Cloudy" refers to the weather conditions when there are 40-70% medium-low clouds or 60- 10% high-altitude clouds in the sky.

This shows that although the sun will shine in both "sunny" and "cloudy" days, there are more clouds in the "cloudy" sky and the sunshine is not enough; "Sunny" is a sunny day, and the sun appears in the sky for a long time.

There is a difference between "turning" and "arriving"

In the recent weather forecast, it often appears that "light rain turns to moderate rain" or "small to moderate rain". Some citizens are puzzled: What is the difference between "turning" and "arriving"?

Experts explained that the word "turn" in weather forecast means a transition process, and "arrival" means fluctuation between the two.

"Light rain turns to moderate rain" means that it starts from light rain and then turns to moderate rain, and there is a process of heavy rain; "Small to moderate rain" refers to the fluctuation of rain between "light rain" and "moderate rain" during the forecast period, which may present multiple changes of "light rain" and "moderate rain".

Similarly, the forecast words such as "sunny to cloudy", "cloudy to light rain" and "cloudy to light rain" are also understood according to this logic.

How to define "local"

If the weather forecast says "it will rain locally today", people generally think that "it will rain when going out today", so they often take umbrellas or cancel their travel plans, but it doesn't rain. In fact, this is related to "local".

What is the scope of "local"? According to meteorologists, "local" in weather forecast generally refers to the area less than 10% within the forecast service scope. For example, in the weather forecast of Guilin city, "local rain" means that the rainfall range in the city is 10%. This kind of rain is unevenly distributed. In some places, it may not rain, and in others, it may be more. Therefore, if there is no rain in other 90% places, it does not mean that the forecast of "local rain" is inaccurate.

In addition, the "partial area" mentioned in the forecast generally refers to the 10%-30% area within the forecast service scope; If it is "most areas", it refers to more than 50% of the areas within the forecast service scope.