On the morning of December 22, when netizens in Jiangsu, Zhejiang, Shanghai and other places in East China looked outdoors, they suddenly felt that they were in a "fairyland" - thick fog shrouded in many places, outdoor visibility was extremely low, and distant buildings, trees, and mountains were completely covered by gray fog.
Monitoring data from the Central Meteorological Observatory shows that at 8 o'clock this morning, the visibility in many places south of the Yellow River in China is relatively low, especially in the Sichuan Basin and Jiangsu Shanghai, where visibility is generally less than 1 kilometer. Among them, the low visibility weather in Shanghai, Jiangsu Province, is the most severe, and there is a strong fog with visibility of less than 200 meters in many places, and there is even a strong fog with visibility of less than 50 meters in some areas. Under the thick fog, it has a lot of impact on this morning's traffic travel.
Judging from the high-definition visible light satellite cloud map in the morning, today in Shanghai, Jiangsu and other places, a thin and smooth cloud layer shrouded this area, which is a large area of thick fog.
For the Yangtze River Delta, today's fog is mostly dominated by advective fog - warm and humid air advects to the colder lower cushion surface, and the fog formed by the cooling of the lower part, which is a common weather phenomenon in winter and spring, which can submerge the buildings in the city and make people on the ground feel like a fairyland. This morning, some netizens also photographed a layer of marshmallows on the Huangpu River in Shanghai, which is a very classic advection fog state.
Then some netizens have to ask: Is this a cold wave holding snow? From the current point of view, the water vapor transmission in the central and eastern parts of China is strengthening, and the Arctic vortex in the north is also promoting a cold wave to the south, and the cold air does have a tendency to freeze the water vapor into a large range of rain and snow. For example, in the forecast of the Central Meteorological Observatory, from December 24 to December 25, the cold wave will go south, and there will be a wide range of rain and snow weather from the east of China's northwest region to the southwest of the Huanghuai River, huaijiang, and Hanjiang, among which there is indeed the possibility of snow turning in many places in Hubei, Anhui, And Jiangsu, and the oblique area of sleet/rain to snow is drawn on the forecast map.
As far as the forecast of the Central Meteorological Observatory is concerned, the Central Meteorological Observatory believes that although the scope of rain and snow weather is wide, the intensity is not strong overall, and the location is west, so there is still a lot of suspense about how much snow can be snowed in the Yangtze River Delta and other places in the east.