What was the weather like on February 12, 2023?

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, the comprehensive expression of the spatial distribution of various meteorological elements in the atmosphere (such as temperature, pressure, humidity, wind, clouds, fog, rain, flash, snow, frost, thunder, hail, haze, etc.). ) in an instant.

The weather process is the change process of weather phenomena with time in a certain area. All kinds of weather systems have certain spatial and temporal scales, and all kinds of scale systems are intertwined and interact with each other. The combination of many weather systems constitutes a large-scale weather situation and hemispheric and even global atmospheric circulation.

Common weather phenomena

1, precipitation phenomenon: it is divided into 1 1 according to the form of precipitation, in which liquid precipitation includes rain, Mao Mao rain and showers, solid precipitation includes snow, ice particles, rice snow, showers, graupel and hail, and mixed precipitation includes sleet and showers. In addition, according to the nature of precipitation, there are three types: formative precipitation, continuous precipitation and intermittent precipitation.

2. Ground condensation and freezing phenomena: including dew, frost, fog and rain.

3. Lightning phenomenon: thunderstorm, lightning and aurora.

4. Other phenomena: strong winds, storms, tornadoes, sandstorms, ice needles, ice and snow.