China Meteorological Administration: The precipitation in Beijing and Hebei in July was the third highest in the same period in history in South China | China | Beijing and Hebei

The China Meteorological Administration held a press conference this morning to release an analysis of the national weather situation and suggestions for disaster prevention and reduction, including the "Seven Down and Eight Up" plan. The specific content is as follows:

1、 National weather and climate characteristics and major climate events in July

The temperature is relatively high, and the precipitation is close to normal, but the distribution is uneven. In July, the national average temperature was 23.0 ℃, which was 0.9 ℃ higher than the same period of the year; The temperature in Guangxi is the highest in history during the same period, with Hainan, Hebei, and Yunnan being the second highest in history; The daily maximum temperature at 20 national meteorological stations, including Naomao Lake in Xinjiang, Jingxing in Hebei, and Linzhou in Henan, has reached or exceeded historical extremes. In July, the national average precipitation was 122.2 millimeters, close to the same period throughout the year; Beijing and Hebei have the third highest precipitation in the same period in history, while Xinjiang has the second lowest precipitation; The daily precipitation at 33 stations, including Guanyun in Jiangsu and Fuzhou in Fujian, has exceeded historical extremes.

From July 16th to August 1st, the national average precipitation was 72.1 millimeters, which was 10% higher than the same period in the past decade and the highest in the past decade; The precipitation in North China, Huanghuai, Jiangnan and other areas is 50% to 2 times higher than the same period in normal years.

The main weather and climate events in China in July are as follows:

First, 8 rainstorm processes affected China. Among them, from the 26th to the 29th, the intensity of the process reached a particularly strong level. Influenced by Typhoon Du Suri, Fujian, Zhejiang and other areas received a cumulative rainfall of 350-800 millimeters, with some areas in Pingtung, Taiwan exceeding 1400 millimeters; From July 29 to August 1, affected by the "Du Suri" residual circulation moving northward, rainstorm to heavy rainstorm occurred in Beijing, Tianjin and Hebei, and extremely heavy rainstorm occurred in some areas, with a cumulative rainfall of 400~600mm, more than 600mm in southwest Beijing, central and southern Hebei, 1003.0mm in Lincheng County, Xingtai, Hebei, and 738.3mm in Wangjiayuan Reservoir, Changping, Beijing.

The second reason is that typhoons make landfall frequently and have strong intensity. During the month, there were three typhoons generated in the northwest Pacific and South China Sea, of which two made landfall. The number of generated typhoons was less than that of the same period in previous years, and the number of landfall was more. Chutai No. 4 "Taili" made landfall in Zhanjiang, Guangdong on July 17th as a typhoon. Typhoon No. 5, Dussuri, made landfall in Jinjiang, Fujian on July 28th. At the time of landfall, the maximum wind force near the center was 15 levels, and the landfall intensity was the second strongest since the founding of the People's Republic of China in Fujian.

Thirdly, regions such as North China and Huanghuai have strong extreme high temperatures. In July, the number of hot days in China was 5.4, the third highest in history since 1961. Two nationwide regional high temperature processes occurred within the month. On July 5-16, the highest temperature in North China, Southeast China, Western Inner Mongolia, and most of Xinjiang reached over 40 ℃, while in Turpan, Xinjiang, it reached 48.7 ℃; There are 12 national stations in Beijing, Shanxi, Guangdong, Xinjiang, Hebei, Henan, Gansu, Liaoning and other places where the daily highest temperature exceeds the historical maximum.

In July, a total of 68800 warning messages were issued nationwide, an increase of 1.02% year-on-year. The early warning information of typhoon, mountain flood, geological disaster, gale and rainstorm increased by 422%, 112%, 38.5%, 35.3% and 18.2% year on year respectively. Mountain torrent disaster, geological disaster, gale and rainstorm warning information are all the highest number issued in the same period over the years.

2、 Weather forecast for early to mid August

In terms of precipitation: in the next 10 days, there will be more rainy weather in western South China, Jiangnan, southern North China, eastern Northeast China, Yunnan, southern Xizang and other places. The cumulative precipitation in most areas will be 60~80mm, in some areas 100~180mm, and in western South China and southern Xizang more than 200mm; Compared with the same period of the year, the precipitation in most of the above-mentioned areas will be 20-60% higher, and some areas will be 1-2 times higher; Most of the rest of our country receives less precipitation.

In terms of high temperatures: In the next 10 days, there will be sustained high temperatures in the Xinjiang Basin, Hexi in Gansu, and central and western Inner Mongolia, with daily maximum temperatures generally ranging from 37 to 39 ℃, and some areas ranging from 40 to 42 ℃; The high temperature weather in the central and eastern regions of our country is not significant. From April to August, there will be 2-4 days of high temperatures in the southern part of North China, the southern part of the Huanghuai River, the lower reaches of the Han River, and the western part of Jiangnan, with the highest daily temperature ranging from 35 to 38 ℃.

In terms of tropical cyclones, Typhoon Kanu, the 6th typhoon of this year, is located on the southeast sea surface of the East China Sea. It will turn northeast near the southern coast of Zhejiang from the night of the 3rd to the morning of the 4th, and will gradually weaken in strength as it moves towards the southeast of Japan in the future. In the next 10 days, there will be about one more typhoon generated in the northwest Pacific and South China Sea, and the possibility of affecting China is currently relatively small.

3、 Climate trend prediction and meteorological service prompts for August

In terms of precipitation, it is expected that in August, some parts of eastern Inner Mongolia, most of Heilongjiang, Jilin, Liaoning, southern Zhejiang, most of Jiangxi, most of Hunan, most of Fujian, some parts of northern Guangdong, most of Guangxi, southern Guizhou, some parts of southeastern Yunnan, central Gansu, and most of Qinghai will have an increase of 20-50%. The number of places in southern Shaanxi, central and eastern Sichuan, southeast Gansu, southwest Xizang, and northern Xinjiang is less than 20% to 50%.

In terms of temperature: It is expected that in August, except for the northeast of Inner Mongolia and Heilongjiang, where the temperature is 0.5-1 ℃ lower than the same period in the year, most parts of the country will have temperatures close to the same period in the year but slightly higher. Among them, southern Shanxi, most of Shaanxi, Henan, western Anhui, Hubei, northern Hunan, Chongqing, northeastern Sichuan, northern Guizhou, southeastern Gansu, Ningxia and other places will have temperatures 1-2 ℃ higher than the same period in the year.

In terms of tropical cyclones, it is expected that 4-6 tropical cyclones will form in the northwest Pacific and the South China Sea in August, approaching the same period as usual to a relatively small number; Among them, 2-3 tropical cyclones have made landfall or significantly affected China; The prevailing path of tropical cyclones is mainly northwest, and there are also northward, westward, and nearshore turning paths, mainly affecting the coastal areas of East and South China in China.

According to the overall climate trend forecast in August, there are five meteorological service suggestions:

One is to prevent heavy precipitation, strong convection, and secondary disasters. The precipitation in eastern Inner Mongolia, northeastern China, northeastern North China, southern East China, central and southern China, most of South China, southeastern Southwest China, and western Northwest China is more than the same period of the year. August is still a period of frequent rainstorm, thunderstorm, gale and other severe convective weather. The periodic heavy precipitation and its possible secondary disasters such as urban waterlogging, flash floods, landslides, mud rock flows, and the risk of severe convective weather disasters are higher. It is recommended that the relevant departments do a good job in flood prevention, lightning protection, hail prevention, strengthen the inspection and troubleshooting of hidden danger points, do a good job in evading and transferring key groups, dredge ditches and canals in advance, timely remove water in the field, reduce the risk of farmland waterlogging, and strengthen engineering construction, transportation, and power Prevention and response measures in terms of supply and communication guarantee, and attention shall be paid to epidemic prevention and control and public health protection after flood.

The second is to prevent the adverse effects of high temperatures in North China, East China and other regions. The number of high temperature days in North China, East and North China, Central and North China, Southwest and East China, Inner Mongolia, Central and Western China, Xinjiang and other regions is close to the same period as usual, and there is a high risk of periodic high temperature heatwaves. It is recommended to take measures such as heatstroke prevention and cooling, power dispatch, and outdoor construction safety protection, and continue to prepare for peak summer energy supply.

Thirdly, attention should be paid to preventing the adverse effects of tropical cyclones along the southern and southeastern coasts. There are 2-3 tropical cyclones landing or obviously affecting South China or the southeast coast of China. It is necessary to pay attention to the possible hazards caused by rainstorm, gale and storm surge brought by typhoon, and take various countermeasures against typhoon.

The fourth is to prevent meteorological drought in the northwest and other areas. The central and northern parts of the northwest region and the northern part of Xinjiang have higher temperatures and less precipitation, which increases the possibility of meteorological drought development and increases the risk. It is recommended to strengthen the water storage and retention work of ponds and reservoirs, ensure the rational allocation of water resources, resist drought and increase soil moisture, and ensure the water demand of crops such as corn.

The fifth is to prevent forest and grassland fire hazards. Due to high temperatures and low rainfall, the forest and grassland fire risk levels in central and western Inner Mongolia, North China, and eastern Xinjiang are relatively high, and it is necessary to do a good job in prevention, early warning, and fire prevention.