According to the ** Meteorological Observatory, since mid-December, the weather situation in China has been extremely complex, with various winter disastrous weather such as cold waves, rain and snow, low temperatures, and freezing. The temperature in the central and eastern regions is significantly low, the precipitation process is frequent and extreme, and there is a wide range of heavy snowfall and obvious snow cover in the Huanghuai region of North China, which have brought inconvenience to the public's daily life and travel.
The cold air continued to affect China, and the temperature was pressed south to the north of South China at line 0. Since mid-December, a total of three cold air impacts China, which occurred on the 10th-11th, 13th-16th, and 18th-21st, respectively. From the 13th to the 16th, the cold air reached the intensity of the cold wave, which was also the strongest cold wave since the beginning of winterThe temperature in the northwest and the central and eastern regions has generally dropped by more than 6, and the land area with a strong cooling of more than 10 is about 3.27 million square kilometers, accounting for 34% of the country's land areaOn the morning of the 17th, the temperature 0 line was located in the southern part of Shaanxi, central Hubei, northern Jiangxi, and central Zhejiang. Since the 18th, strong cold air has affected the central and eastern parts of China, and the temperature has continued to drop and maintained a significantly low trendOn the morning of the 24th, the temperature of Line 0 pressed south to the northern part of South China, the southern part of Guizhou, and the southern part of Sichuan.
The temperature in the central and eastern parts of the country is significantly low, and the average temperature in North China, Huanghuai, Northeast China and other places is the lowest since 1961. In early December, the temperature in most parts of China was high, and since mid-December, under the continuous influence of cold air, it has turned from high to significantly low, among which the temperature in North China, Huanghuai, Northeast China, northern Xinjiang, Gansu, Inner Mongolia and other places is lower than that of the same period in normal years4 6, and the eastern part of Inner Mongolia and Heilongjiang are more than 8 low;A total of 78 national meteorological observation stations across the country saw their minimum temperatures fall below the historical extremes in DecemberThe minimum temperature of 12 observation stations in Shanxi, Hebei, Inner Mongolia, Hunan and other places exceeded the historical extreme value since the establishment of the local stationThe regional average temperature in North China, Huanghuai, Northeast China and Inner Mongolia was the lowest since 1961.
The snowfall process is frequent and affects a wide area. Since mid-December, there has been a lot of rain and snow in our country. From the 10th to the 11th, moderate to heavy snow and local blizzards occurred in North China, Huanghuai, south-central Inner Mongolia, central and northern Shaanxi, eastern Liaoning, and southeastern JilinFrom the 13th to the 16th, there was widespread snowfall, sleet or rain turning to snow in the north of the middle and lower reaches of the Yangtze River, and heavy snowfall or heavy snowfall occurred in the southeast of Shanxi, the central and southern parts of Hebei, the central and northern parts of Henan, the northwestern part of Shanxi and the peninsulaFrom the 18th to the 19th, light to moderate snow or sleet and localized heavy snow occurred in parts of Jianghuai, northern Jiangnan, Shandong Peninsula and Liaoning. From the 20th to the 22nd, there was another blizzard or heavy snowstorm in the northern part of the Shandong Peninsula, and there was a heavy snowfall in Weihai Wendeng (20 o'clock on the 20th - 20 o'clock on the 21st, and the snowfall was 337 mm). In addition, freezing rain occurred in Guizhou, Hunan, northern Jiangxi, southern Anhui, eastern Hubei, central and western Henan, western Shandong, and central Fujian.
The accumulated precipitation is large and extreme. From the 10th to the 23rd, the cumulative precipitation in the central and eastern parts of Northwest China, North China, Huanghuai, Jianghuai and other places was more than 3 times higher than that of the same period in normal years. Among them, the cumulative snowfall in central and southern Hebei, southeastern Shanxi, northern Henan, and northern Shandong was 20 30 mm, and 40 115 mm in Weihai and Yantai in ShandongRain turned to snow or sleet in central and southern Henan, Hubei, Anhui, Jiangsu and other places, with a cumulative precipitation of 30 50 mm and 60 100 mm locallyA total of 275 national meteorological observation stations across the country reported daily precipitation exceeding the historical extreme value in December.
Obvious snow cover occurred in North China, Huanghuai and other places. Affected by snowfall,The maximum new snow depth in southern Beijing, southern Tianjin, central and southern Hebei, most of Shanxi, northern Henan, northern Shandong and the peninsula is 10 20 cm, and the Shandong Peninsula is more than 50 cmAmong them, the snow depth reached 74 cm at 08:00 on the 22nd in Wendeng, Weihai, Shandong, breaking through the historical extreme value of snow depth in Shandong (54 cm, Wendeng, December 13, 2005).。In addition, 3 10 cm of snow also appeared in central Anhui and southwestern Jiangsu, and 12 13 cm in Jiangsu.
It is expected that in the next 10 days, precipitation will be scarce in most parts of the country, and the temperature will gradually rise to close to the same period of the year or highAmong them, the northern part of Xinjiang, the eastern part of Inner Mongolia, and the central and northern parts of Northeast China are higher than 3 5, and the southern part of South China and the southern part of the Qinghai-Tibet Plateau are lower by 1 2. The northern region turned higher than the same period of the normal year on the 25th, and most of the southern areas gradually rebounded to close to the same period of the normal year or higher on the 26th.
*: CCTV news client.
Editor: Wang Qiong.
Process Editor: Guo Dan.