This week, a new wave of cold air will affect the mainland, warm and humid airflow is not to be outdone, in the frequent confrontation of cold and warm airflow, the weather situation in the country is complex and diverse, the north is alternating in the advance of warm heat and obvious cooling, and the south will have two rounds of heavy rainfall and strong convective weather one after another.
A new wave of cold air will mainly cool down the Northeast on the 15th, and the maximum temperature in many places in Jilin can drop by more than 10 °C in a single day. There will also be a cooling in the south around the 16th, and the range above 30 °C will retreat to Yunnan and South China, but the decline will be limited, and the maximum temperature in most parts will remain above 25 °C, not changing the warm pattern.
Temperatures rebound quickly as the rest of the north cools down. Around the 17th, the maximum temperature in Shanxi, Beijing, Tianjin, Hebei, Ningxia, Shandong, Henan and other places will return to about 25 °C.
From the 17th to the 20th, there will be cold air affecting the mainland, and the cooling will be greater, and the obvious cooling will also affect Huanghuai and other places. In large cities, the maximum temperature in Shijiazhuang will drop to 17 °C on the 19th.
On the whole, this week, the north is alternating between advanced warm heat and obvious cooling, so we should pay attention to the nowcast and pay attention to the timely increase or decrease of clothing.
At 06:00 on April 15, the Central Meteorological Observatory issued a yellow warning for fog, a blue warning for sandstorms, and a blue warning for severe convective weather.
The Central Meteorological Observatory continued to issue a yellow warning for heavy fog at 06:00 on April 15:
It is expected that from day to night on April 15, there will be fog with visibility of less than 1 km in the southern part of the Bohai Sea, the Bohai Strait, most of the Yellow Sea, the northwest part of the East China Sea, the eastern part of the Liaodong Peninsula and the coastal waters of the Shandong Peninsula, the coastal waters of Zhejiang, Hangzhou Bay, and the waters near the mouth of the Yangtze River. In addition, from the morning to the morning of the 15th, there was heavy fog in parts of the northwestern and southern parts of Shandong, southeastern Henan, central and northern Anhui, northern Jiangsu, eastern Hubei, and central Jiangxi, among them, some areas in the northwestern and southern parts of Shandong, southeastern Henan, northern Anhui, and eastern Hubei had strong dense fog with visibility of less than 200 meters, and there was extremely strong dense fog with visibility of less than 50 meters locally.
Strong dense fog appeared in Nanchang, Jiangxi, and visibility was less than 50 meters in many towns and villages
On the morning of April 15, most areas of Nanchang City, Jiangxi Province, experienced strong dense fog. At 5:15, the Nanchang Meteorological Observatory updated the orange warning for heavy fog, and it is expected that in the next 6 hours, there will be fog with visibility less than 200 meters in most areas of Nanchang City, and traffic safety should be paid attention to. Among them, the Xinjian District of Nanchang City changed and issued a red warning for fog at 5:26, and it is expected that fog with visibility less than 50 meters will occur in many towns and villages in the Xinjian District.
The fog process will be superimposed with the morning rush hour in Nanchang City, and strict precautions need to be taken, especially drivers who are driving should turn on the fog lights and slow down.
The Central Meteorological Observatory continued to issue a blue warning for sandstorms at 06:00 on April 15:
Affected by cold air and strong winds, it is expected that from 08:00 to 20:00 on April 15, there will be sand or floating dust weather in parts of southern Xinjiang, northern Qinghai, eastern Inner Mongolia, northern Shanxi, Beijing, Tianjin, Hebei, western Jilin, western Liaoning and other places, among which there will be sandstorms in southern Xinjiang. From the night of the 15th, the sand and dust weather weakened.
Moderate to severe pollution! The front part of the sand and dust is close to the sky over Beijing
The Beijing Meteorological Observatory issued a blue warning signal for sand and dust at 5:20 on April 15: Affected by cold air and strong winds and upstream sand and dust transport, it is expected that there will be sand and dust weather in Beijing from the morning to the afternoon of the 15th, pay attention to precautions.
Beijing's air quality is expected to reach level 3 to 4 with light to moderate pollution throughout the day, with PM10 being the primary pollutant. Among them, the early morning to the morning of the 15th is the main transit period of the main body of sand and dust, PM10 concentration can reach the moderate to severe pollution level, from the afternoon to the night sand and dust gradually moved out of the city, and the air quality gradually improved to a good level of 2.
The Central Meteorological Observatory will continue to issue a blue warning for severe convective weather at 06:00 on April 15: It is expected that from 08:00 on April 15 to 08:00 on the 16th, there will be 8-10 thunderstorms and strong winds or hail in parts of eastern and southern Hubei, central and northern Hunan, central and northern Jiangxi, eastern Sichuan, western Chongqing, central and western Guizhou and northeast China, with local winds reaching more than 11; There will be short-term heavy precipitation in parts of the central, western and northeastern parts of Guizhou, northwest and northeast Guangxi, with a maximum hourly rainfall of 20-50 mm, and locally more than 60 mm.
It is expected that the main period of influence of severe convection will be from this afternoon to night.
There will be two rounds of rain in the south this week
Starting on the 15th, a new round of heavy rainfall in the south was launched. It is expected that from the 15th to the 17th, there will be moderate to heavy rain in Jiangnan, South China, the eastern part of the Sichuan Basin, and the central and eastern parts of Guizhou, with localized heavy rain, accompanied by short-term heavy precipitation, thunderstorms, strong winds or hail and other strong convective weather. Due to the good water vapor and energy conditions, strong convective weather such as scattered short-term heavy precipitation will occur in Hunan and Jiangxi on the afternoon of the 15th, and the strong convective weather at night may be further strengthened.
From the 18th to the 20th, another round of rain will hit one after another, and it is expected that there will be moderate to heavy rain in Jianghan, Jianghuai, Jiangnan, South China, Sichuan Basin and Guizhou, accompanied by strong convective weather.
Under the influence of cold air in the north, the rainfall will contract to the northeast and northeast of Inner Mongolia from the 15th to the 16th, with light to moderate rain intensity. This will be followed by a period of intermittent rainfall, and from the 18th to the 20th, there will also be light to moderate rain in the eastern part of Northwest China, western North China, Huanghuai and other places, with locally heavy rain.
Strong convective weather has occurred in many places on the mainland, and we should be vigilant against secondary disasters caused by heavy rain
In the past two days, heavy rainfall has occurred in parts of the southern part of the northeast region of the mainland, Hebei, Huanghuai, and Jiangnan, and heavy rains have occurred locally.
According to meteorological satellite monitoring, from the 13th to the 14th, rainfall was more frequent in the southern part of the mainland, and the rain was stronger in some areas. There are short-term heavy precipitation weather in northern Jiangxi, northern and southern Zhejiang, northern Fujian and other places, with a maximum hourly rainfall of 20 to 40 mm, and locally up to more than 50 mm.
She County, Anhui Province: Local heavy rainfall caused flash floods
She County, Anhui Province, on the 14th, heavy rain to heavy rain, local heavy rainfall, the maximum rainfall reached 121 mm, and the local first time issued a strong convection and heavy rain warning signal.
Heavy rainfall caused landslides and briefly blocked roads. Shishi Township immediately activated the emergency plan for flood control and rescue, and called all the village cadres and emergency militia to join the flood fighting and rescue team.
Liu Richeng, a road rush officer in Shishi Township, Shexian County, Anhui Province: At more than 6 o'clock in the morning, he began to inspect the Tianlu Road, and there were quite a lot of tourists and vehicles, and normal traffic has been resumed.
Quzhou, Zhejiang: The water conservancy hub opened the flood gates to cope with heavy rainfall
On the 13th, the average rainfall in Quzhou, Zhejiang Province in the past 24 hours reached 40.4 mm, of which 55.6 mm was in Kaihua County, where a yellow warning for thunder and lightning was issued. The major reservoirs in Quzhou City have also strictly implemented various flood prevention measures and regulated the amount of water in a timely manner. At 10 o'clock in the morning of the 14th, the Changfeng Water Conservancy Hub in Changshan County, Quzhou City opened the flood gates.
The meteorological department predicts that the scope and intensity of rainfall in the southern region will shrink and weaken on the 14th, but from the 15th to the 16th, the rain in the Jiangnan region will strengthen again and the rainfall will expand.
Source: China Weather Network, Central Meteorological Observatory, CCTV News Client, Beijing Daily