165438+1weather conditions on October 8.
Most parts of the country will be affected by cold air. Where did such strong cold air come from? Of course, I still like Siberia, which has always been a gathering place for cold air to invade China. This year's situation is somewhat special. The cold air mass over Siberia was crushed by warm air! It sounds contradictory, but it's true. This year's La Nina incident is a foregone conclusion. Under its influence, the activity of winter wind will be strengthened, and the cold air in the Arctic will go south more easily. At present, the warming trend in the Arctic is serious, and the polar vortex is weakened, which leads to its influence spreading southward. Cold air gathers in Siberia, and the westerlies and westerly jet fluctuate greatly.
La Nina and Arctic warming caused cold air to move south. In this situation, the Ural Warm Ridge in the west of Siberia and the Okhotsk Warm Ridge in the east strongly northward, almost reaching the North Pole. Under the attack of these two warm air masses, the cold air mass accumulated over Siberia had to be pushed south, and when it went south, it formed a powerful all-round cold air. It is omnipotent because this cold air can do anything, except that heavy snow and strong wind will bring a lot of rainfall to the southern region, and some places will also be heavy rain. Cold air will first affect Xinjiang, Inner Mongolia, Gansu and other places in the northwest. It has started to snow in some parts of Xinjiang, and it will sweep across the southeast, covering almost 90% of China land under the cold wave.
According to the forecast, cold air has begun to affect the northwest region. By18: 00 on October 8, the temperature in most parts of China will drop by 8 ~ 10℃ successively, and the temperature will drop by 12 ~ 14℃ in parts of northwest China, most of Inner Mongolia, North China, Huanghuai, western Jianghuai and southern Northeast China. In South China, which has always been slow to respond to cold air, the minimum temperature in the north will also drop to about 10℃.
Under the influence of such strong cold air, this cold wave process will have snowstorms in parts such as northern Shanxi and northern Hebei, except Xinjiang and Inner Mongolia. As cold air bursts into the south, it will bring a lot of rainfall, and most areas in the southeast will be shrouded in rain clouds, including 50-70 mm heavy rain in parts of eastern Jiangsu, northeastern Jiangxi and southern Zhejiang.
Snowfall in the north, cooling rain in the south and snowstorm and rainstorm have brought a real problem: do you want to wear long pants? After this wave of cooling, the lowest temperature of 0℃ on the morning of165438+1October 8 will be located in central Shandong, central Henan and northern Sichuan, which indicates that most parts of northern China will drop below freezing point. Generally speaking, you can wear long pants when the minimum temperature drops to 10℃. Speaking of autumn trousers, it was invented by foreigners. Later, due to the improvement of heating conditions, they did not like to wear them themselves. However, I didn't expect autumn trousers to be popular in China. 1970, almost everyone wore it in the 1980s. After all, people at that time liked the temperature and didn't care much about manners. Nowadays, wearing long trousers has become a very tangled thing.
The 0℃ line will be pushed to Shandong, Henan and northern Sichuan. My friends may have put on long pants when the cold air hit last time, but the temperature has risen in recent days, and many friends who love beauty have taken off their orders again. Now that this wave of all-round cold air is coming, it is estimated that your autumn trousers will be difficult to take off. For friends in the south, many people have some rejection of autumn trousers. Wearing long pants will make your legs a little thick and not fashionable enough. Some people still feel uncomfortable, because the autumn trousers are very close to the skin. In addition, there is no heating in the south, which makes southerners quite resistant to freezing, so they are not very cold about autumn trousers.
However, in this cooling process, the minimum temperature in the Yangtze River basin will drop to 4~8℃, and the temperature in Hunan, Jiangxi and Zhejiang in the south will also reach 8~ 10℃, and then it will rain and be wet and cold. It's time to put on long pants.
When the cold wave comes, you can't wear long pants. Even Guangdong and Guangxi, which have always been indifferent to cold air, cannot escape the clutches of cold air this time. Since ancient times, because of the protection of Nanling Mountains, the cold air from the north has been a spent force here, and I can't stand crossing Nanling again, so the winter in Lingnan is basically not cold. However, this cold wave is powerful enough to cross the tall Nanling mountains and affect the Guangdong and Guangxi regions. The lowest temperature in Shaoguan, the northernmost city in Guangdong, will be only 6℃ on June 1 10. Even in the warm flower city of Guangzhou,1October 9th was only 1 1℃ It is normal for some people who are afraid of the cold to wear autumn clothes and trousers, so they are warmer.
The lowest temperature in Shaoguan, Guangdong Province will drop to 6℃, but the cold air attack is not all bad, it will blow away the smog that has occupied North China for many days. On June 4-6, 165438+ Due to poor diffusion conditions, severe haze occurred in southeastern Beijing, Tianjin, central and eastern Hebei, and northern Shandong. From the afternoon of the 6th, the strong wind brought by cold air will blow the smog away. I believe this cold air will leave a deep impression on everyone, but this is only the beginning. Nowadays, under the general situation of global warming, extreme weather will become more and more frequent. La Nina phenomenon and Arctic warming will lead to frequent cold air southward, and the "overlord" cold wave at the end of 2020 is believed to be indispensable this winter.