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According to the Shanghai Central Meteorological Observatory, the strongest cold wave this winter will hit Shanghai next Tuesday. Affected by this, the 48-hour cooling rate in Shanghai can reach 9 ° C to 11 ° C. From December 31 this year to New Year’s Day 2021, the lowest temperature in the urban area will reach -6 ° C to -4 ° C, and the lowest temperature in the suburbs will reach -8 ° C to -6. ℃, severe frostbite appears.
So far this winter, cold air is still a small problem, not the weather. The temperature in Shanghai is forecast to rise steadily in the coming days, with the highest temperature from this weekend to early next week expected to be 13 ° C to 15 ° C, and the lowest temperature It will also be 5 ° C to 8 ° C. But a year-end cold snap is building. According to the announcement by the Central Meteorological Observatory, cold air has accumulated in Siberia. Once the energy storage is completed, the horizontal channel will be turned upright and the high-altitude channel will guide a powerful cold air mass to high pressure to invade our country, causing a drastic cooling.
The reporter learned from the Municipal Meteorological Office that this cold snap will begin to affect Shanghai next Tuesday afternoon, and the process will continue until the end of this year, bringing a cliff-like cooling, 8 north winds, rain and snow. Specifically, the minimum 48-hour temperature drop from December 29 to December 31 can reach 9 ° C to 11 ° C, the highest temperature on day 30 falls to around 0 ° C, and the lowest temperature in the area urban reaches -6 from 31 to New Years Day 2021. ℃ to -4 ℃, the lowest temperature in the suburbs is -8 ℃ to -6 ℃, severe freezing will occur.
At the same time, the 29th is dominated by rain, and the weather will turn to sleet or light snow in the first half of the night, stopping on the 30th. The wind increased significantly since the afternoon of the 29th, with the Largest gusts north of the land up to levels 7 to 8, and the Yangtze River estuary and coastal areas along the Yangtze River up to levels 8 to 10. The wind weakened as of the night of 31. Also, low visibility weather can appear in some areas on the morning of the 28th.
The worrying thing is that in the last 20 years, the minimum temperature in December in Shanghai has not fallen below -5 ° C. The next -6 ° C this time is likely to break the all-time record for the same period and set a new one. minimum. According to meteorological data, in the last 20 years, the lowest temperature in December in Shanghai occurred in 2004, at -4.3 ° C.
The impact of this New Year’s Eve cold snap may be even greater or less than the great cold snap of early 2016. Most citizens still remember the cold snap. On January 24, 2016, the entire city of Shanghai was “fast frozen” overnight. The lowest temperature in Xujiahui station was only -7.2 ℃, and the lowest temperature in all districts between -9 ℃ and -6 ℃, and Chongming was the lowest, reaching -8.5 ℃; Local automated weather stations have updated the record for the lowest temperature in late January since 1981, and all weather temperatures are below zero. As for this year’s cold snap, meteorological experts said it is most likely the same as the cold snap of early 2016. Although the minimum temperature in Shanghai is currently forecast to be -6 ° C , it is not ruled out that the temperature at individual sites is even lower. The temperature will also be lower.
Why is this cold air so strong? Is “a cold winter once every 60 years” about to appear? According to the analysis of experts from the National Climate Center, due to the La Niña phenomenon and the lack of anomalous sea ice in the Arctic, from a national perspective, since December, temperatures in many areas of China have been lower than in the same period of previous years. According to current forecasts, La Niña is still developing, and may reach its peak in late December this year, with a medium intensity; the state of the Arctic’s shallow sea ice will not change anytime soon. Therefore, in the near future, the overall colder temperature in China will continue.
For Shanghai, under the pressure of this cold snap, the temperature in early 2021 will be difficult to rise anytime soon. Although the maximum temperature on New Year’s Day will rise slightly from 5 ° C to 7 ° C, the minimum temperature will remain below 0 ° C.
Author: Zhang Tian ChiReturn to Sohu to see more
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Disclaimer: The opinions in this article only represent the author himself. Sohu is an information publishing platform. Sohu only provides storage services.
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