China News Service Harbin, April 21 (Zhang Yuejiang Hui) Affected by the northeast cold vortex, recently, the western region of Heilongjiang Province ushered in blizzard weather, and there was a local blizzard. From 8:00 on the 19th to 8:00 on the 21st, the cumulative precipitation in 11 counties and cities in Heihe City and Qiqihar City exceeded 20 mm, and the cumulative precipitation in Aihui District of Heihe City reached 46.7 mm, the highest in Heilongjiang Province. In the single-day precipitation on the 20th, Qiqihar City reached 30.1 millimeters, the second highest daily precipitation since April 1961 (the first place was April 27, 1983).

The staff of Mohe City in Daxinganling topped the snow to inspect vehicles and prevent and control the epidemic situation. Photo by Wang Jingyang

  According to the information released by the Heilongjiang Meteorological Observatory, this rain and snow weather is mainly affected by the northeast cold vortex. The southwest airflow in front of the cold vortex brings warm and humid air. After the cold air enters, the temperature drops sharply and the precipitation phase changes to snow. A good dynamic lifting mechanism and sufficient warm and humid air are one of the reasons for this precipitation process. The high-pressure ridges in the Okhotsk Sea region caused the northeast cold vortex to hover over Heilongjiang Province, resulting in long-term precipitation weather, which is also one of the reasons for the large amount of snow this time.

  Heilongjiang Province ushered in this process of rain, snow, strong cooling, and strong winds from west to east. The precipitation phase is complex. Most areas are rain to sleet or snow. The precipitation phase in most areas of Daxinganling, Heihe, Qiqihar is snow. In the main, the amount of snow in the south of the Greater Xing'an Mountains, Heihe and Qiqihar is so heavy that there is heavy snowstorm in Heihe City, Qiqihar Gannan County and Qiqihar City, and there are local heavy snowstorms. In most other areas, there are small to moderate rain (snow) or sleet the weather.

On April 19, Daheganling Mohe City ushered in moderate to heavy snow. Photo by Wang Jingyang

  In the central and northern parts of Heilongjiang Province, the newly added snow depth is 4 to 8 cm. Qiqihar City, Gannan County, Fuyu County, Nehe County of Qiqihar City, Nenjiang County of Heihe City, Heihe City, and Daxinganling Jiagedaqi District have a snow depth of more than 10 Centimeters, of which, the new snow depth in Nenjiang County reaches 30 centimeters.

  At the same time of snowfall, the temperature in most parts of Heilongjiang Province changed drastically. As of 8 a.m. on the 21st, the temperature in all parts of the country dropped by 8 to 10 ° C and locally by 12 to 14 ° C. The highest temperature in most areas was below 10 ° C and the lowest temperature was below -1 ℃.

On April 19, the snowflakes flew in Huzhong District of the Greater Xing'an Mountains. Photo by Feng Hongwei

  The Heilongjiang Meteorological Observatory closely monitored the development of snowfall and issued a blue warning signal for cold waves and a yellow warning signal for road icing on the 19th. On the 20th, a blizzard yellow warning signal, a strong wind blue warning signal, and a road icing yellow warning signal were issued. At 18:00 on the 20th, the red warning signal for blizzard in Qiqihar urban area and Gannan County was issued, and the orange warning signal for blizzard in Daxinganling area, Heihe city, and other areas in Qiqihar city was issued. During the course of the precipitation weather, there was rain and snow freezing weather, and the slippery roads caused most highways in Heilongjiang Province to be closed.

  According to the forecast released by the Meteorological Observatory of Heilongjiang Province on the 21st on the 21st, it is expected that the snowfall will continue from the afternoon of the 21st to the 21st. , Northern Harbin, Qitai River, western Jixi, northern Mudanjiang, moderate to heavy snow, other areas snow. There are wind and snow in some areas. From 21 to 22, most areas of Heilongjiang Province had winds of 4 to 5 and gusts of 6 to 7. From 21 to 23, the temperature in Heilongjiang Province remained low, with the highest temperature in most areas being 2 to 8 ° C and the lowest temperature -7 to -2 ° C. (Finish)