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△ National Thunderstorm Gale or Hail Warning (Central Meteorological Observatory/Issue)
People's Voice of the World, April 19, Beijing Express In the blink of an eye, the traditional 24 solar terms of "Gu Yu" have arrived. In the opinion of experts, as the warm and humid airflow moves northward in waves, when it encounters cold air from the south, it will cause frequent rainfall in the south. In the northern region, there will also be a large-scale rainfall process from west to east from the 18th to the 20th. Whether it is in the north or south, the temperature mostly shows a trend of high and then low.
△6 hours cumulative monitoring of severe convective weather in South China (Central Meteorological Observatory/Fa)
Experts said that monitoring data showed that from this morning (19th) to noon, there were still a lot of strong convective weather in the southern region. Among them, there was an 11-level thunderstorm gale (28.9 m/s) from 08:00 to 09:00 in Xiaping, Jiangxi, breaking the local gust record in April. In Guangdong, the short-term heavy rainfall was particularly ferocious, during which many meteorological observation stations experienced rain intensity of more than 40 mm/h, for example, Quang Ninh's 79.6 mm from 10 a.m. to 11 a.m. broke the record for the strongest hourly rainfall in the history of local observations. Another example is Qingyuan, Guangdong, which was continuously on the national rainfall list at 11 o'clock and 12 o'clock, and the rainfall in two hours from 10 o'clock to 12 o'clock was close to 100 mm. It is expected that from the afternoon to tomorrow (20th), there will be strong convection in Jiangnan and southern China. To this end, the Central Meteorological Observatory continues to issue a yellow warning for severe convective weather.
△National short-term heavy precipitation warning (Central Meteorological Observatory/Fa)
According to experts, today because of the influence of cold air + precipitation, it has also caused the temperature to plummet by 10 °C-20 °C in the central and western parts of Inner Mongolia, many places in Shanxi, and northern Hebei; statistics show that at 14 o'clock in the same year, Inner Mongolia Baiyun Obo fell by 22.6 °C; yesterday (18th) it was above 20 °C, and there was snowfall today. At the same time, the Inner Mongolia Darhan Maomingan United Flag also plummeted by 21.7 °C at 14 o'clock today. Among the provincial capitals/prefectures/municipalities, Hohhot (*Saihan District) dropped by 16.3°C, Taiyuan (Xiaodian) dropped by 11.1°C, Shijiazhuang dropped by 9.9°C, Beijing dropped by 9°C, Tianjin dropped by 8.3°C, Zhengzhou dropped by 8.5°C, and Yinchuan dropped by 8.4°C.
△Regional air quality monitoring (Ministry of Ecology and Environment/Fa Zhen Qi Network/Map)
It is worth noting that industry insiders emphatically pointed out that it is not difficult to find that in the study and judgment of the situation, as experts said, because of the cold air winds, there are sand and dust weather in western Inner Mongolia, Ningxia, and eastern Gansu today; moreover, the PM10 concentration at some environmental monitoring sites exceeds 600 micrograms per cubic meter, reaching the level of "bursting the table"; for example, Bayannur in Inner Mongolia, Zhongwei and Guyuan in Ningxia, and Pingliang in Gansu. Currently, with the low-altitude northerly-northwesterly winds, the dust is transmitted in a south-southeast direction. For example, in Xianyang, Shaanxi Province, PM10 concentration rose to 471 micrograms per cubic meter at 13 o'clock, causing serious pollution, and as a result, Xi'an will also be affected by sand and dust in the afternoon, and the air quality will deteriorate. (Editor-in-charge/Xiangyu)
*Editor's Note:
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