During the National Day, strong cold air will sweep through most areas, and the local area will plummet by 20 degrees. What preparations do you need to make for your trip?

For Jiangnan, Jianghuai and other places, this strong cold air will experience the last high temperature process before, based on cold air.

Before the arrival, the base temperature was very high, and the drop of cold air will have a great impact on these areas and most parts of the country.

In terms of regions, this will be a strong cold air, which will make the temperature hit a new low in the second half of this year. Time came to the high latitude circulation, revealing its choppy side. In the context of the development of the high-pressure ridge in the upper Ural Mountains, come

The cold source from the polar regions is squeezed southward by this ridge of high pressure and directed to China, Xinjiang and other places.

At the same time, the cold source accumulated here to form a

The transverse groove is concave inward and the ridge is convex outward. The invasion of the westerly trough corresponds to different degrees.

Cold air is active. In the next few days, this horizontal trough will turn vertical, that is, the low pressure is horizontal, and the airflow behind the trough will be guided.

Leading cold high pressure south has brought the strongest cold air process in China since the second half of the year. Up to now, Xinjiang, Heilongjiang, Inner Mongolia and other places have been invaded by cold air. With a large degree of cooling, the above areas

It will gradually break the low temperature since the second half of this year.

1. Cold air will reach most parts of the north, while the front of the cold front will reach the south of Shandong Peninsula, bringing a cold front to the north.

In the next large-scale cooling process, the somatosensory temperature will be lower when the wind passes. When the temperature is low, the stronger the wind, the body will feel the temperature.

The higher the temperature, the more attention should be paid to the prevention of gale process for fishing boats in Bohai Sea. In addition, Heilongjiang, three northeastern provinces, Xinjiang, Gansu, Ningxia and Shaanxi

The temperature in the west, Hebei and Shanxi will drop to single digits. The above areas need to take certain cold-proof and warm-keeping measures, and go out to add clothes.

At the same time, with the advance of the front, the north will usher in a precipitation process from north to south; It will come out in high altitude areas such as Inner Mongolia and Northeast China.

Snowfall is declining, but in Shandong, southern Hebei and Shanxi, the accumulated precipitation in the next three days will reach about 50 mm, which will help alleviate the drought.

A lot of help

South China, Jiangnan, Jianghuai and other places will also have sunny, hot and high temperature weather due to the control of subtropical high downward airflow.

The last large-scale high temperature process. At the same time, this high temperature process may also approach or even break through the extreme temperature of Jiangnan 10.

Second, the cold front of cold air will further advance to Jianghuai and other places, bringing a cool breeze to Jianghuai.

The second precipitation process is expected to have a cumulative precipitation process of more than 20 mm in Jianghuai area. At the same time, the temperature in the North China Plain will drop further.

Low. Because the basic temperature in Jianghuai area was controlled by subtropical high in the early stage, the cooling rate will reach a large level this time.

Take Hefei as an example, the highest temperature is still 38 degrees, and the lowest temperature is only 12 degrees, reaching the temperature in the second half of the year.

New low. This time, the temperature drop is very large, so we should pay special attention to the collocation of clothes, appropriately increase or decrease clothes, and pay attention to the possible impact of large temperature difference.

Physical discomfort and other issues.

The cold air will further advance to the northern part of the south of the Yangtze River and begin to gradually end the last large-scale high temperature in the south of the Yangtze River.

Cheng, but because the south of Jiangnan has not been touched by cold air, there will be a high temperature process. For the north, the lowest

The temperature below single digits may touch a line in southern Henan.

Take Changsha as an example here. Changsha began to gradually cool down in the morning, and the temperature went down all the way, reaching the following.

The temperature hit a new low in six months. Although the cooling rate of cold air in Changsha is not as good as that in Hefei, the cooling rate is also large. At the same time, the lowest temperature in Changsha is not very high.

Low, just add clothes properly.

Third, the cold air pushed to the middle of Jiangnan, and the high temperature in Jiangnan ended, and there was still a high temperature process in South China. At the same time, it is affected by the cold air front.

Under the influence of rising rain and falling rain, there will be a staged rainfall process in the northern part of the south of the Yangtze River, with a cumulative precipitation of 20-40 mm, which will alleviate the drought.

Yes, but places such as southern Jiangnan will continue to face less precipitation. At the same time, most of Jiangnan

The region will usher in an autumn process, and the average temperature will be below 22 degrees for five consecutive days. Jiangnan will also usher in cool autumn weather, and the heat will not decrease.

Yes

However, South China is less affected by this round of cold air, and the cooling rate is low, which has little impact on residents' lives. This article will not describe it in detail.

It is said that.

According to the existing weather forecast data, the weather situation in China during the National Day is as follows: Jiangnan and Jianghuai will be as hot as before the holiday.

In summer, it will be extremely rainy in North China at this time. In the middle of the holiday, cold air strikes, and North China, Jianghuai and Jiangnan will usher in cliff-like cooling.

Take Hefei as an example, it takes only two days to reduce the maximum temperature from 39 degrees to 16 degrees, and the days of 16 degrees are all moderate rain and little sunshine.

Under it, autumn is getting stronger. In fact, the power of subtropical high has begun to appear today.

As we can see,

The northern section of line 5880, which symbolizes the subtropical high, has reached the Yangtze River, while line 5920, the core area of the subtropical high, has gone from Zhejiang and Fujian.

Coastal landing is affected by subtropical high, and there is continuous high temperature weather in southern China. Gas provided by the Central Meteorological Observatory

From the temperature map, 15, Jiangxi, Hunan, Zhejiang and Fujian have experienced high temperatures above 35 degrees. And this is just a subtropical high.

The first horn of the counterattack.