What's the weather like on September 29th?

It was cloudy on September 29th, 27℃ and 20℃, with no continuous wind direction. Weather refers to the specific state of the near-surface atmosphere in a short period of time in a certain area, and weather phenomenon refers to various natural phenomena in the atmosphere, that is, various meteorological elements (such as temperature, pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, etc.) that appear instantly in the atmosphere.

The weather process is the change process of weather phenomena with time in a certain area. Various weather systems have certain spatial and temporal scales, and they are intertwined and influence each other. Many weather systems are combined to form large-scale weather situation and hemispheric and even global atmospheric circulation. The weather system is always in the process of birth, development and extinction, and there are corresponding weather phenomena in different development stages.

weather forecast

Weather forecast is to predict the weather conditions in a certain period in the future by applying the law of atmospheric change and according to the current and recent weather situation. Based on the analysis of satellite cloud images and weather maps, combined with relevant meteorological data, terrain and seasonal characteristics, mass experience and other comprehensive research. For example, the satellite cloud image of China Central Meteorological Observatory was taken by Fengyun-1 meteorological satellite made in China. Using satellite cloud images for analysis can improve the accuracy of weather forecast.

The time limit of weather forecast is usually divided into three types: short-term weather forecast (2 ~ 3 days), medium-term weather forecast (4 ~ 9 days) and long-term weather forecast (10 ~ 15 days or more). CCTV mainly broadcasts short-term weather forecast every day.