Among them, the thickness of snowfall in 2008 was 5 cm, and it did not exceed 4 cm in other years.
Shanghai is located in low latitudes, far away from the cold air mass sources in high latitudes. In addition, many east-west mountains in China can effectively block the cold air from the cold air mass source in high latitudes from going south, so the probability of snowfall in Shanghai is low.
In a few years, the cold air from the south will be too strong, resulting in strong cold wave weather, which will sharply cool the Shanghai area and may lead to snowfall. 2008 and 20 10 are the best examples.
Extended data
Shanghai is located on the subtropical coast, with shallow snow, and the maximum snow depth is generally less than 10 cm, of which 33.3% is less than 2 cm, 62.3% is 2 ~ 14 cm, and only 4.3% is ≥ 15 cm. Only Guangxu 18 lunar calendar 65438+February 1 2 (1893 65438+1October 29th) appears1day > 20cm, and the depth is 29cm, followed by19.
Shanghai has a subtropical monsoon climate with four distinct seasons, abundant sunshine and rainfall. Shanghai has a mild and humid climate, with shorter spring and autumn and longer winter and summer. In 20 13 years, the city's average temperature 17.6℃, sunshine 1885.9 hours, and precipitation1kloc-0/73.4 mm. More than 60% of the annual rainfall is concentrated in the flood season from May to September.