China News Service, Beijing, August 6 (Reporter Yuan Xiuyue) Affected by two rounds of heavy rainfall, the largest flood since the hydrological record was recorded in the Raoyang River in Panjin, Liaoning.

On August 1, the Panjin section of the Raoyang River broke.

At present, more than 70,000 people have been displaced in Liaoning due to floods.

　　The reporter learned that since the flood season, Liaoning has recorded the most precipitation in the same period in the past 30 years. What is the reason?

Panjin flood control and disaster relief site.

Video screenshot

Floods in many places in Liaoning

Direct economic loss of 1.375 billion yuan

　　Affected by two rounds of heavy rainfall on July 7 and July 28, the largest flood in the Raoyang River occurred since hydrological records were recorded.

　　At 6 o'clock on August 1, serious water penetration occurred in the dyke-piercing pipe gallery of the Shusilian section on the left bank of the Raoyang River.

Panjin City's anti-flood index launched a flood control level I emergency response, and urgently mobilized personnel and materials for emergency rescue, but the dam still burst at 10:30 with a width of about 20 meters.

On the morning of the 2nd, the width of the breach expanded to about 50 meters.

　　On the 4th, the Liaoning Provincial Flood Control and Drought Relief Headquarters announced that as of August 3, there were 31 counties (cities, districts) in 9 cities including Shenyang, Anshan, Dandong, Jinzhou, Fuxin, Panjin, Tieling, Chaoyang and Huludao in Liaoning Province. ) 235 townships (streets) suffered flood disasters, the affected population was 468,400, the affected area of ​​crops was 121,500 hectares, 341 collapsed and severely damaged houses, 1,662 houses were generally damaged, and the direct economic loss was 1.375 billion yuan.

Be prepared for a clog.

Source: Released by Panjin

How's the rescue going?

Liaoning transfers more than 70,000 people

　　According to the Panjin Flood Control and Drought Relief Headquarters, as of August 4, the Raoyang River has continued to exceed the police for 37 days, and flood control and flood relief have reached the most critical juncture.

295 flood relief teams fought day and night to repair and reinforce the second and third dams.

　　According to CCTV news reports, on the afternoon of the 4th, the dam road on the south side of the Panjinshu Fourth Link Section of the Raoyang River dyke has been rush through, and the construction of the operating platform at the south side of the breach at night has been completed, and the occupation has begun.

As of 11 am on the 5th, the dam on the south side has been built 7 meters forward.

　　Due to the low terrain, poor road conditions and relatively complex operating environment, the speed of road grabbing of the dam on the north side has been greatly affected, and construction is currently underway.

From the afternoon to the evening of the 5th, it may usher in a key node of two-way blockade on both sides of the north and south.

　　In addition, on the 4th, the National Disaster Reduction Committee and the Ministry of Emergency Management launched the national level IV disaster relief emergency response, and sent a working group to the disaster area to check the disaster situation on the spot, and guide and assist the local area to do well in disaster relief work such as life assistance for the affected people.

　　According to reports, since July 28, a total of 75,495 people have been transferred from Liaoning, and 8,531 people have not returned, including 333 people in Fuxin and 8,198 people in Panjin.

　　As of the 5th, a total of 1,931 households and 8,203 people have been transferred in Panjin, of which 6,671 people were transferred by themselves and 1,532 people were resettled centrally.

Build a car platform.

Source: Released by Panjin

Why did the Raoyang River burst?

There have been 13 rounds of heavy rain since the flood season

　　Since July, heavy rains in many places in the north have caused concern.

The reporter was informed that there were 6 regional rainstorms in my country in July, 4 of which occurred in the north.

　　The precipitation in Liaoning is more than normal.

Gong Qiang, deputy director and senior engineer of the Shenyang Regional Climate Center, said that since the flood season (June 1 to July 31), the average precipitation in Liaoning Province was 417.8 mm, 67.6% more than the same period in normal years, exceeding the total summer precipitation , the most in the same period in the past 30 years, and the second largest in the same period since 1951.

　　Among them, a total of 13 rounds of heavy rain occurred, the most in the same period in history.

From July 28th to 30th, there was a regional heavy rain process with the longest duration and the strongest intensity since the flood season in Liaoning Province this year. The extreme value of heavy precipitation mainly occurred near the Raoyang River Basin.

　　Gong Qiang introduced that since the beginning of the flood season, the areas with precipitation more than doubled compared with the same period of normal years are mainly distributed in the northern areas of Fuxin, Shenyang, Jinzhou and Panjin.

Among them, the precipitation of many stations in the Raoyang River Basin is the highest in history.

　　In the Panjin area where the Raoyang River burst, the precipitation since the flood season was 490.9 mm, 1.1 times more than the same period of the previous year, and the second most in the same period in history since 1951.

The precipitation at this station in Panjin is 519.5 mm, which is 1.1 times more than the same period of normal years, the most in the same period in history since 1951, and exceeds the total amount of summer precipitation.

Precipitation distribution since the flood season in Liaoning

Why is there so much rainfall?

Any more?

2 more in the next 10 days

　　Gong Qiang said that the main flood season in Liaoning is usually "seven down and eight up" (late July to early August), but this year's precipitation is abnormally high.

First, because of the obvious interdecadal variation of summer precipitation in Liaoning, the precipitation in Liaoning has entered a stage of more than normal in the past two years.

　　In addition, the La Niña event in the equatorial and central and eastern Pacific continued, the SST in the Indian Ocean was warmer, and the SST tripole in the North Atlantic was in positive phase, which affected the atmospheric circulation in the middle and high latitudes, and the northeast cold vortex was stronger, resulting in more precipitation in June.

In July, the northern boundary of the subtropical high in the Northwest Pacific Ocean is significantly northerly, which is conducive to the transport of water vapor, and the frequent convergence of cold and warm air aggravates the abnormally high rainfall in July.

　　As for whether this situation will become the norm in the future, Gong Qiang believes that it is necessary to pay attention to changes in atmospheric circulation at any time.

　　Will there continue to be heavy rainfall in Liaoning for some time to come?

Yan Qi, deputy director and senior engineer of the Shenyang Central Meteorological Observatory, said that in the next 10 days, Liaoning is expected to have 2 strong rainfall events accompanied by strong convective weather.

　　Experts reminded that the rainfall in the Northeast region lasts for a long time, the overlapping area is high, and the risk of disaster increases. It is necessary to strengthen the prevention of mountain torrent geological disasters, floods in small and medium rivers and urban and rural waterlogging, and prevent the adverse effects of strong convective weather.

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