When does it snow in Hefei?

On June 25, 2020, Hefei ushered in the first snow this winter. When the weather is cold at high altitude, water vapor will become water droplets or ice crystals. When water droplets or ice crystals contact and grow to a certain extent, air will fall downward to form precipitation.

If the low-altitude temperature is higher than 0℃, it is water droplets and rain; When the low-altitude temperature is lower than 0℃, small ice crystals will not melt during landing, and snow will be formed. Rain and snow belong to different phases of water vapor, and whether it rains or snows depends on the low-altitude temperature.

During this cold wave, the boundary between rain and snow is located in Hefei-Lu 'an line, and the temperature drop predicted by the Municipal Meteorological Observatory in the early stage is not as large as the actual temperature drop (the difference is about 1℃), resulting in snowfall not being predicted. The transformation between rain and snow has always been a difficult point in forecasting. In the future, we will continue to strengthen the analysis and research of rain and snow forecast, and do our best to make every forecast.

In addition, Hefei Meteorological Observatory released the latest weather situation 2019165438+1October 25th 1 1:

There is sleet on cloudy days.

The northerly wind is 4, and the gust is 7. Minimum temperature: 2℃.

Tomorrow during the day: there will be light rain or sleet on cloudy days.

Dongfeng level 3. Maximum temperature: 1 1℃.

Anhui gateway-just now! Bian Xiao of Hefei Meteorological Observatory gave an answer to why snowfall was not accurately predicted.