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Original title: Overlord’s cold snap arrives in Shanghai tomorrow afternoon, and the temperature drops to 11 ℃ in 48 hours. It is not only windy, but also snowy.
Xinmin Evening News (Reporter Ma Dan) Today, Shanghai is a bit warmer, with the highest temperature reaching 15 ° C, but this is just a “confusion” tactic for the forward to warm up before the wave hits. of cold. According to the latest forecast from the Shanghai Central Meteorological Observatory in the morning, the overlord’s cold snap is already “on its way”, and Shanghai is about to usher in the hottest “diving” movement since the beginning of winter , and will activate the first blue cold wave warning signal this winter.
The lowest temperature can break records
The cold wave is not a “tide” but cold. It is a catastrophic weather in winter. The main characteristics are violent cooling and strong winds, sometimes accompanied by rain, snow and frost. Cold waves can cause rivers and ports to freeze, traffic disruption, broken water pipes, freezing of livestock and plants in early spring and late fall. “Although this cold snap may not be as strong as the cold snap around January 24, 2016, it is rare for a cold snap of this level to appear in late December. Hence, the risk of disaster it brings it cannot be ignored. “Shanghai Central Meteorological Observatory chief forecaster Tian Hongjun said the biggest impact of this cold snap is cooling. The minimum temperature in Shanghai will drop between 9 ~ 11 ℃ in 48 hours from 29 to 31, and the minimum temperature is very likely to almost cool down. The lowest in the same period in 20 years.
According to forecasts, as the strong cold air hits Shanghai in the afternoon of the 29th, the temperature will drop off a cliff and the maximum temperature will drop to about 0 ℃ from the 30th to the 31st, especially the temperature on the 30th will be “upside down” . , The temperature is not lower than noon in the morning and at night, since during the day, the temperature will drop to freezing during the day. The extreme minimum temperature for this round of cooling is expected to appear on December 30 and January 1, 2021. By then, the minimum temperature in the urban area will plummet to -6 ~ -5 ℃, and will be lower in the suburbs, and the temperature can only be -8 ~ – 6 ° C and severe freezing occurred.
Source: Shanghai Central Meteorological ObservatoryThere will be snow in the early morning of the 30th
The first snow of this year appeared quietly and he said goodbye, which disappointed many citizens. The “neighbors” in the Shencheng Yangtze River Delta have already sounded Blizzard’s warnings when the cold snap hits. So will this cold snap bring snow to Shencheng? Tian Hongjun said that in the impact of this cold wave, the impact of the wind will be more pronounced than that of the snow. It is difficult for Shanghai to see snow.
From the beginning of the 29th, Shanghai will usher in the rains, with a moderate amount of accumulated rain (10-15mm). “If citizens want to enjoy the snow scene, they may have to wait until midnight tomorrow. At that time, the precipitation will gradually turn to sleet and there may be short-term light snow in the western suburbs and north, “Tian Hongjun said, due to the impact of this cold snap, The cold air is strong and the warm and humid air flow is too weak to form a long-term confrontation. Furthermore, the high temperature in the initial period makes it difficult to form favorable conditions for large-scale and long-lasting snowfall. “This snow may not only fall quietly, but snow can only be seen in some areas, and the duration will not be too long. The duration of sleet or light snow is expected to be only 1 to 2 hours. morning rain on the 30th The snow gradually stopped. ” However, due to rainfall and rapid drops in temperature, roads can freeze in low-lying, water-prone areas in Shanghai on the morning of 30-31. “
Compared to snow, the appearance of the wind may be more noteworthy. According to forecasts, due to the strong impulse of cold air, the wind will increase significantly from the afternoon of 29. The largest gusts from the north of the earth can reach magnitudes of 7 to 8, and the Yangtze River estuary and coastal areas Along the Yangtze River they are magnitude 9-10. Shanghai’s coastal waters are 10 ~ 11 grade. Also, the strong wind lasts a long time, and the wind will gradually weaken in the night of the 30th.
