Forecast time of heavy snow in Henan Province

Solar term of heavy snow in 2023: 65438+February 7th 17: 32: 44.

"Twenty-four solar terms" said: heavy snow, November Festival, has always been heavy snow, because snow is the product of cold, representing cold and rainy weather. This solar term is characterized by a significant drop in temperature, and strong cold air can often bring rainfall or snowfall. The name heavy snow is a metaphor, which reflects the climate change during this solar term. The cold current is active, the temperature drops and the precipitation increases. It's not that it snows heavily in this solar term, but that it will get colder and colder after the solar term.

The heavy snow in the sense of solar terms is not necessarily related to the heavy snow described in the weather forecast. The solar term of heavy snow is a climate concept, which represents the climate characteristics during the solar term of heavy snow, and the heavy snow in the weather forecast refers to the snow with high snowfall intensity. Meteorology stipulates that when it snows, the visibility is poor, the horizontal visibility distance is less than 500 meters, the depth of snow on the ground is equal to or greater than 5 cm, or the snowfall reaches 5.0 ~ 9.9 mm within 24 hours, which is called heavy snow.

Historical origin

Every year around 65438+February 7th in Gregorian calendar, when the sun reaches 255 degrees of the Yellow Meridian, it is a solar term of heavy snow. The twenty-four solar terms are the product of agricultural civilization, and the main climatic factors affecting agricultural production are precipitation, temperature and light. Like the light snow solar term, it is a solar term reflecting the changing trend of temperature and precipitation, and it is also a reflection of agricultural culture on festivals.

Heavy snow is a solar term reflecting climate characteristics. Climate factors include precipitation, temperature, light and so on. Among them, precipitation is an important factor of climate. Meteorology calls the condensation of water vapor falling from the sky to the ground precipitation. The arrival of heavy snow in solar terms means that the weather is getting colder and colder and precipitation is increasing.