20 19 when will the sun shine in Changsha and Shanghai?

I don't know if the cold of the whole winter is just for the few days of the Spring Festival. In the next few days, many places have entered a long rainy period. Shanghai, Changsha and Wuhan spent almost half a month in rainy days. The rainy weather and humid weather are estimated to be unbearable for the whole city!

Rare continuous rainy weather, covering most parts of the south. It is difficult to stop raining before the beginning of March.

Since 2065438+September 2008, the SST in the equatorial Middle East Pacific Ocean has been continuously high, and it has entered the El Ni? o state, which is conducive to the strong westward movement and stable maintenance of the western Pacific subtropical high in winter. In addition, the staged activities of the south branch trough lead to a large number of low-latitude water vapor transported to the south of China. At the same time, since the winter, there have been many cold air activities and strong forces, and cold and warm air frequently meet in the southern region, resulting in rare continuous rainy weather in southern China.

From tomorrow on, the rain will come back again. The Hunan Meteorological Observatory predicts that in the coming week, most of Hunan will be rainy and rainy, with obviously more rainfall.

Meteorologists have warned that there will be strong convective weather such as thunderstorms and strong winds and short-term heavy rainfall in Hunan later this week, and the public needs to take precautions in advance.

It is predicted that the temperature will gradually rise in the next 40 days, and will reach the highest point 1 1 in March.

Precipitation Day in South China

First, the characteristics of continuous rainy weather in southern China

The rainy weather lasted for a long time. Since February, 65438+2065 438, the precipitation days in southern Jianghuai, southern Jiangnan, most of Guizhou, northern Guangxi and northern Fujian are generally 40-55 days longer than normal and normal 10- 15 days. The average precipitation days in Guizhou, Hunan, Hubei, Jiangxi, Zhejiang, Anhui and Jiangsu provinces are all 196 1 year, which is the highest in the same period.

The sunshine time is obviously less. The sunshine hours in southern Jianghuai, Jianghan, Jiangnan and other places are 50-80% less than normal, and the number of days with sunshine hours less than 3 hours per day is generally 55-70 days. The sunshine hours in Hunan, Hubei, Jiangxi, Zhejiang, Anhui and Jiangsu are all 196 1 year, which is the least in the same period in history, and Guangxi is the second least. Among them, except for Jiangsu and Fujian, where the average daily sunshine hours are 2.5 hours and 2.6 hours respectively, the rest provinces are less than 2 hours, and Hunan is less than 1 hour.

With stage hypothermia. Rainy days in the south of China are accompanied by staged low temperatures. Especially since February 7, the temperature in Jianghuai, Jianghan, most parts of the south of the Yangtze River, central and eastern Guizhou and northwestern Guangxi has been 2 ~ 6℃ lower, which has aggravated the adverse effects of rainy days.

The rainy weather will continue in most parts of the south in early March.

It is predicted that there will still be rainy weather in the eastern part of Jianghuai, Jiangnan, South China and Southwest China in late February, with 6-9 days of precipitation in most areas, and the accumulated precipitation is more than 1-3 times than normal. The temperature is lower than normal 1 ~ 3℃. The main precipitation periods are 20th to 2nd1,22nd to 24th, 26th to 28th. From 20th to 2nd1,there was moderate to heavy rain in Hunan, Jiangxi, Zhejiang, Fujian, Guangdong and Guangxi, and there was heavy rain or heavy rain locally.

In the first ten days of March, it was still rainy in the south, and the accumulated precipitation in most areas was 50% to 1 times higher than normal.

Third, warm tips

Meteorologists reminded that the low temperature and rainy weather in the southern region will continue, and public travel needs to guard against the adverse effects of slippery roads on traffic; Wet weather is easy to breed bacteria, so we should pay attention to strengthening self-protection to avoid diseases; The public in mountainous areas should also pay attention to prevent geological disasters that may be induced by continuous rainfall and local heavy rainfall.