20 17 when will the rainstorm in the south end?

As we all know, there has been a lot of precipitation in southern China recently, and many places have been harmed, such as Hunan and Zhejiang. So how long will the rain in the south last on 20 17? The following is when the 20 17 rainstorm in South China will end. I hope it works for you.

20 17 when will the rainstorm in the south end? Generally speaking, the rainstorm in the south will end in June and July every year, that is to say, it will end in the middle and late July every year.

Heavy rain refers to rain with high precipitation intensity, which is often formed in cumulonimbus clouds. According to meteorological regulations, rain with hourly rainfall greater than 16 mm or continuous 12 hour rainfall greater than 30 mm and 24-hour rainfall greater than or equal to 50 mm is called? Heavy rain? . Heavy rain is divided into three grades according to its precipitation intensity, that is, the 24-hour precipitation is 50-99.9 mm? Heavy rain? 、; 100-249.9mm？ Heavy rain? ; Weighing more than 250 mm? Heavy rain? . However, due to the different characteristics of precipitation and topography, the standards of rainstorm and flood are different in different places. China has always been a country with frequent rainstorms. Every year, except for some provinces and regions in the northwest, there are heavy rains in most areas. April-June is the frequent rainstorm period in South China every year.

The latest report of 2065438+2007 rainstorm in the south will weaken from July 3, but there will still be rainstorm in Guangxi and other places. Affected by continuous heavy rainfall, Hunan, Guangxi, Guizhou and other places suffered serious floods. Please pay attention to the latest weather forecast and early warning information in time and pay attention to prevent geological disasters such as floods in small and medium-sized rivers, waterlogging in urban and rural areas and flash floods that may be caused by continuous heavy rainfall.

Since June, China Jiangnan and other places have suffered six consecutive heavy rains. Frequent rainfall leads to more precipitation in most parts of the south of the Yangtze River, northern South China, Guizhou and other places than normal, with more precipitation in central Hunan 1 ~ 2 times. From the night of June 22 to the day of July 2, the heavy rainfall belt has covered ten fishing cities (cities, districts) south of the middle and lower reaches of the Yangtze River. Rainfall lasts for a long time and has great intensity. As of the morning of July 2, the cumulative rainfall in parts of Guizhou, Guangxi, Hunan and Jiangxi exceeded 200 mm, and the local area in northern Hunan, southeastern Hubei, northwestern Jiangxi and northwestern Guangxi was 500 ~ 800 mm.

Affected by continuous heavy rainfall, Hunan, Guangxi, Guizhou and other places suffered serious floods. Orange Island in Changsha, Hunan Province has been flooded, and Guilin, Guangxi is now waterlogged in many places. According to the news from the water conservancy department, some hydrological stations in the Yangtze River Basin and the Pearl River Basin have exceeded the warning water level, while Changsha Station in Xiangjiang River and Lengshuijiang Station in Zishuihe River have exceeded the highest water level in history. Hunan Hydrology and Water Resources Survey Bureau also issued a red flood warning on July 2 10: 04.

On July 3, due to the reduced scope and intensity of the rainstorm, the Central Meteorological Observatory lifted the blue rainstorm warning at 6 o'clock, but there was still heavy rain or rainstorm in parts of eastern and southern coastal areas of Guangxi, most of Guangdong, western and southeastern Yunnan, southern Sichuan and other places, and there was heavy rain in parts of central Guangdong (100 ~120mm). The main rain belt will move northward around the 5th. From 5th to 8th, there will be moderate to heavy rain, local heavy rain or heavy rain in most parts of Sichuan Basin, middle and upper reaches of Hanshui River, Huanghuai, eastern Jianghuai, North China and Northeast China.

The public should pay attention to the latest weather forecast and early warning information in time, pay attention to prevent geological disasters such as floods in small and medium-sized rivers, waterlogging in urban and rural areas, flash floods, etc., and be alert to the adverse effects of local strong convective weather such as thunderstorms and strong winds.

What are the hazards of rainstorm? Rainstorm is one of the main meteorological disasters in China, which not only affects industrial and agricultural production, but also may endanger people's lives and cause serious economic losses. So, what harm will rainstorm bring? Its harm mainly includes flood disaster.

1, flood disaster

The occurrence of flood disaster is due to heavy rain and heavy rain caused by too much or too concentrated water. Heavy rains can also lead to flash floods and river flooding. Flood disaster not only harms crops, fruit industry and fishery, but also damages farmhouses and industrial and agricultural facilities, and even causes human and animal casualties and serious economic losses. Almost all floods in the history of our country were caused by heavy rain.

2. Flood disaster

Waterlogging disaster includes waterlogging disaster and waterlogging. Waterlogging is due to the accumulation of water in farmland after rain, which exceeds the flood resistance of crops. Waterlogging is mainly due to the high groundwater level, which often leads to soil water saturation and excessive water in the active layer of crop roots, which is not conducive to crop growth and forms waterlogging disasters. However, waterlogging disasters exist in most areas, and sometimes it is difficult to completely separate them, so they are collectively called waterlogging disasters. Waterlogging disaster is due to the sudden and heavy rainstorm, which easily leads to waterlogging, and the soil pores are full of water, which leads to the lack of oxygen in the roots of terrestrial plants, inhibits the physiological activities of the roots, strengthens the anaerobic process, produces toxic substances, and harms crops and reduces production.

Main measures to prevent rainstorm 1. Pay more attention to the weather forecast in daily life and take preventive measures in advance when you know that heavy rain is coming.

Try not to go out during the rainstorm. When you have to go out, you should try to bypass the area with serious water accumulation.

3. Don't litter, rubbish, etc. Go into the sewer on weekdays to prevent blockage, resulting in water accumulation during heavy rain.

4. When the rainstorm comes, can low-lying residential areas adapt to local conditions? Small encirclement? Measures, such as building fences, placing water baffles at the gate, and configuring small pumps.

5. For residents who live on the ground floor, the electrical sockets and switches at home should be moved to a safe place above the ground 1 meter. Once the outdoor water overflows into the house, the power supply should be cut off in time to prevent the water from being charged and hurting people.

6. When walking in outdoor stagnant water, pay attention to observation and walk near buildings to prevent falling into manholes, holes or pits. 7. When the driver encounters too deep water on the road or under the overpass, he should try to bypass it to avoid forced passage.

People living in mountainous areas should pay attention to prevent flash floods. Pay special attention when the upstream water suddenly becomes turbid and the water level rises rapidly.

8. Farmers who grow fruits and vegetables should effectively protect crops before the rainstorm.

9. Residents living in high terrain and mountainous areas should be moved to safety in time and orderly before the rainstorm.