Why is the weather in Heilongjiang so crazy?

The weather stage in Harbin, the ice city, is particularly lively? Strong winds, rainfall, graupel and snowflakes appear together, and the temperature drops rapidly. 1 1, the temperature is lower than yesterday 13℃ or more. Today, the strong wind will continue to roar during the day, with a northwest wind of 5-6 and a gust of 9. The weather is crazy today! On May 5th 1 1, the highest temperature in Harbin was 20. 1℃, and it dropped to 13.9℃ on the 6th. The highest temperature on May 6th was only 6.2℃, which was 1 1. At about nine o'clock, there was a strong wind in Harbin, with a gust of nine. At about 9: 30, it began to rain in Harbin, and there was a storm. At about 9: 40, small ice particles began to float over Harbin and crackled on the window. A few minutes later, it turned into a snowflake again.

According to meteorologists, the scientific name of small ice particles is "graupel"? Water vapor in the sky meets small ice particles condensed by cold air, which mostly appear before or when it snows. The graupel is also called snowball or soft hail. It is said that the last snow in Harbin all the year round, with an average of 17 days in April, is the fourth night in history, and the first three days in history are1978 May10/day,1966 May 8 and1988 May 7 respectively.

It is expected that with the gradual removal of cold vortex and surface cyclone? The windy and cool weather in Harbin will gradually stop. It is predicted that the weather in Harbin will be fine on May 7, with a northwest wind of 4-5, and the highest temperature will rise to around 18℃. On the 8th, the wind turned southwest, and the highest temperature climbed to 22℃. The highest temperature even rose to 365,438 0℃ on the 9th.