Why doesn’t it snow in Zhejiang!

On January 24, 2018, Zhejiang welcomed its first snowfall in 2018. The Zhejiang Provincial Meteorological Department announced that at 8:00 on the 25th, the snow depth in Hangzhou urban area was 1-2 cm, and the snow depth in Huzhou, Changxing, Deqing and Tongxiang reached 4 cm.

At 3 pm on January 25, 2018, the Hangzhou Meteorological Observatory issued a yellow snow warning signal. The meteorological department reminded that the scope of snowfall in Zhejiang will expand, and this low-temperature rain and snow will last for a long time. Extended information

Zhejiang belongs to the subtropical maritime monsoon, with significant monsoons and four distinct seasons. The temperature in the coldest month is around 0 degrees. Moreover, Zhejiang is surrounded by mountains on three sides and close to the sea on one side. Mountains on three sides block the cold air from the south. In winter, the average The temperature is 3~9℃.

The formation of snow requires two major conditions, one is cooler ice crystal nuclei and the other is moisture. When the temperature in the clouds drops below the freezing point of 0°C, the water forms ice powder in the shape of ice crystals, which are ice crystal nuclei. When these ice crystal nuclei accumulate to a certain extent, they fall and become the snow we see.

When the temperature under the cloud is below 0℃, snowflakes can fall all the way to the ground to form snowfall. If the temperature under the clouds is higher than 0℃, sleet may occur, so it rarely snows in Zhejiang Province.

Baidu Encyclopedia - Snow (natural phenomenon)

Baidu Encyclopedia - Zhejiang

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