If you face a snowstorm, you should take corresponding cold-proof measures. For cold waves and strong winds, we should also prepare for wind and warmth in advance. Freezing rain needs extra care, because it may cause roads to freeze and increase traffic dangers.
Cold wave is a large-scale strong cold air activity process, but not all cold air is called cold wave. According to the national standard of cold air grade revised by 20 17, cold air can be divided into four grades: weak cold air, strong cold air, strong cold air and cold wave. Cold wave is the king of cold air.
The cold wave that affects China is generally "born" near Xindi Island and Iceland, and it is accumulated and strengthened in "gas stations" in western Siberia. It can affect China through various paths, generally affecting the middle and lower reaches of the Yangtze River and the south of the Yangtze River, and some even reaching South China.
The southward path of China cold wave
1, East Road: From the northwest of Bolivia through Mongolia to the north and southeast of North China, and then turn to the southeast, the area south of the middle and lower reaches of the Yangtze River will suffer from rainy (snowy) weather for a long time.
2. Middle Road: Starting from the northwest of Bolivia, from Mongolia to the north of the Yangtze River through the Hetao area, and bringing strong winds, sandstorms and significant cooling, bringing rain and snow to the south of the Yangtze River.
3. West Road: Starting from Siberia and Mongolia, along the eastern part of Xinjiang and the Qinghai-Tibet Plateau, this road will bring rainy (snowy) weather to most parts of the country, but the cooling rate will not be great, and sometimes it will bring cooling and frosty weather to Jiangnan and Southwest China.