Hail in the afternoon + thunderstorm in the evening the temperature in Hangzhou dropped to 24.4 ℃ at 8:00 last night

Yesterday was the third day in a row that Hangzhou suffered a thunderstorm in the afternoon, and it was a super enhanced version of "Hail + Thunderstorm" Before noon yesterday, Hangzhou, like many other days before, looked like a sunny day with constant heat At noon, the temperature also rose to 39 ℃, the highest value yesterday It's over 1 p.m it's Hailing! It's big and small Some people say it's about the size of pigeon eggs and quail eggs Some say it's about the same size as soybeans Some netizens say it's about 2cm in diameter According to the monitoring of Hangzhou meteorological station, there were thunderstorms in the main urban areas of Hangzhou yesterday afternoon, including hailstones in the West Lake area and Xiacheng District However, the hail and thunderstorm did not last long It was more than 3 p.m and it was sunny after the rain When many people think that the thunderstorm of this day is over, around 6 o'clock in the evening, it comes back again, with a more intense momentum From 18:00 to 19:00 yesterday, there were 555 lightning flashes in Hangzhou's main urban area and 506 in Xiaoshan District This order of magnitude is quite a lot The hailstones rebounded from the eaves of the house have scratched my head, Wu, who was interning in a company When it was hailing, he just got off at Wulin Square by bus "It was raining when I got off I wanted to run to the next building for shelter, which was more than ten or twenty meters away When I was about to run, suddenly there was hail, as big as pigeon eggs Maybe it was a hail on the eaves that bounced back and hit me on the forehead It hurt a bit Later, when I saw it, it turned red and scratched a little skin " There was a band aid in Wu's bag It was put on his forehead, but it was not good-looking, so he tore it off immediately Mr Wu's hometown, Henan, also had hail, but it was not as big as what he saw in Hangzhou yesterday It was the first time that he was hit by hail Yesterday afternoon, Miss Tian was watching TV at her home in Cangji new village When she heard "crackling" outside the window, she felt like a bowl of beans falling from the sky "We ran to the window and saw that the hailstone was as big as the thumb, and the small one was just like the thumb, jumping around on the windowsill Open the windows and they can jump into the room " Miss Tian said that hailstones of that size had never been seen before and were very fresh Unfortunately, the plastic awning just installed on the balcony this year was also injured In some places, the outer green plasticizer has been smashed, and there is still a layer left inside, which is not a big problem; in others, the whole plasticizer has been smashed through directly, and it may leak if it rains again Mr Zhang is a staff member of Hangzhou people's insurance company At 1:49 yesterday afternoon, he sent a micro blog: "Wow, the hailstone like candy block, for the first time in life, the relatives who go out are careful There's a danger for relatives who don't have glass insurance " Mr Zhang later explained to us that as long as the owner of the car insured against the risk of single damage to the glass, according to the insurance regulations, the insurance company could compensate for the damage of the window glass if it was smashed or damaged by hail "However, there are not many people who cover glass insurance now I personally think it's quite practical, except for hailstones, such as the weather is too hot and the glass is cracked; or when driving on high speed, small stones splash up to break the glass, you can also compensate." A pine tree was struck by lightning and a fire broke out in Meijiawu at 12:57 yesterday On the top of baishaywu mountain in Dagang mountain at the south entrance of Meiling tunnel, a pine tree was struck by lightning and burned The fire spread to the meadow on the edge of the cliff on the top of the mountain The fire area was about 150 square meters The fire was at the top of the mountain The mountain was steep and there was no way to climb the mountain The joint defense team took a firewood knife and branches and climbed all the way up One by one, they formed a dragon like reservoir from the top of the mountain to the mountainside and carried the water to the top of the mountain Fortunately, there was a shower when the fire was put out More than half an hour later, the open fire was basically put out Yesterday evening, the staff of Qianjiang management office and Lingyin management office were on duty at the top of the mountain all the time to revive the fire fighting situation The heavy rain yesterday evening caused the water in some sections of the city yesterday evening when it rained heavily, it was the evening peak, and many people were on their way home Because of the heavy rainfall in a short period of time, part of the urban roads began to accumulate water Many readers report the real situation to us through microblog - @ little apple is aluminum super silver: rainwater pouring on binwen road @Lu Gein Osaka: Shaoxing Road, Chaowang Road, has been flooded @Big bug: Baochu road and Tianmu Mountain Road intersection can start the ship At 19:15 yesterday, the official microblog of our newspaper also announced some waterlogged roads: Chaowang road crossing in Shaoxing Road, Chenjinglun sports school in Shuguang Road and airport crossing in Qiutao Road The waterlogging was quite serious Gongshu District new water section: Moganshan Road Daguan road crossing, Shangtang road Desheng road crossing In addition, under Daguan bridge on Hushu North Road, there is serious ponding in several bridge holes at Hepu road crossing on Dengyun road The signal light at Hushu road crossing of Wenyi road and Wenyi road crossing of Moganshan Road fails Another netizen tweeted that the gate of the east railway station had been blown down by the gale The East Railway Station Management Committee said that the gate is on the west side of the waiting hall of the east railway station Fortunately, there are fewer passengers in and out of the area, and no one has been hit It is expected to be repaired today In the evening, the strong wind made Xiaoshan Airport in trouble The glass of T1 terminal of the airport was blown down by the strong wind and scattered in the hall, but no one was injured The warning line was quickly raised on the scene The airport said it would repair it as soon as possible The subtropical high retreated a little bit The convective cloud cluster had a chance Why was it hailstorm, gale and Thunderstorm in Hangzhou yesterday? The weather seemed to be extremely violent? Hangzhou meteorological observatory said that the main reason is that the subtropical high is a little weakened, so it has a step back to give the convective cloud a chance Some time ago, Hangzhou has been under the strong control of subtropical high Hangzhou is like being covered in a hot iron bucket The hot air covers us from the beginning to the end, without any looseness In the past two days, the subtropical high has slightly weakened, while Hangzhou is just on the edge of the subtropical high Therefore, the air is no longer as stable as when the subtropical high is under control, and the strong convective weather in summer has its basis For example, yesterday afternoon, after the subtropical high weakened, the southwest wind blew in the low-level air, while the southeast wind blew at 5500 meters In the vertical distribution of air, the heat below and the cold above promote the vertical convection of air The warm and humid water vapor in the lower layer is continuously transported to the upper layer, and when it meets the cold air condensation, a thunderstorm cloud is formed in the upper layer Once a thunderstorm cloud is generated, lightning, strong wind, rainstorm, even hail may occur, and the weather is very intense A large amount of unstable energy is accumulated in high temperature days, so thunderstorms and hailstones were extremely fierce and convective yesterday In fact, it is very common in summer As for hail, there are some in Hangzhou almost every year, big or small Generally speaking, the months in Hangzhou where hail is easy to fall are March to May and August in midsummer On September 7, 2012, there was hail with a diameter of about 1cm in Fuyang On April 27, 2011, July 29 and August 4, 2010, hailstorms also occurred in Hangzhou But even though it appears in reason, though not unprecedented, yesterday's weather, in the whole summer's strong convective weather, is still "very fierce" The city's meteorological station said that this was mainly due to the high temperature in Hangzhou for several days and the huge amount of unstable energy accumulated in the air As long as there is a little bit of air convection, it will cause this huge energy, and eventually it is easy to develop into strong thunderstorms, rainstorms and gales Yesterday afternoon, Hangzhou Meteorological Bureau also sent a micro blog to remind everyone: "this kind of day thunderstorm can hide then hide!" It is completely the emergence of hail and thunderstorm, which have nothing to do with the natural hail and artificial precipitation enhancement It can't help but be connected with the artificial precipitation enhancement being implemented in the counties and cities around Hangzhou these two days Yesterday afternoon, Yuhang, Fuyang, Lin'an, Tonglu, Chun'an, Jiande and other places did implement artificial precipitation However, thunderstorms and hailstorms in Hangzhou are not related to artificial precipitation That is to say, even if the surrounding counties and cities did not implement artificial precipitation yesterday, most of Hangzhou will have thunderstorms and hail yesterday Moreover, according to Hangzhou meteorological station, artificial precipitation increase has the function of restraining hail development Because the chemicals released by rain bombs that penetrate the clouds will increase the number of hail embryos However, the embryo of hailstone needs to combine with the surrounding water drops or ice crystals before it can finally fall into hailstone in the strong convection environment Once there are too many hail embryos, they will "fight for food" in the limited water drop or ice crystal resources in the area As a result, no one can grow up to be hail The hailstorm in Hangzhou yesterday afternoon was mainly caused by the strong convection caused by the precipitation clouds The ice crystals in the upper layer of the clouds grew too fast and fell in the form of ice before they became water In fact, this is also the embodiment of the urban heat island effect: the temperature in Hangzhou is very high, and the temperature of the clouds floating from other places is very low In contrast, there is strong convection There may be thunderstorms in the afternoon in these two days, but the possibility is gradually reduced, and the intensity is not as big as yesterday's successive storms, which makes Hangzhou's temperature keep falling At 8 p.m., the temperature has fallen to 24.4 ℃, which is estimated to be the coldest night since July However, the wind and rain come and go in a hurry, the cool feeling can only last for a few hours Today, when you read the newspaper, the window may be sunny again The Central Meteorological Observatory said yesterday that although thunderstorms have brought cool to Zhejiang, Shanghai and other places, the rain is coming and going in a hurry Today, as the subtropical high strengthens to extend westward, the high temperature will still appear on time With the increase of subtropical high again, the possibility of afternoon thunderstorm in Hangzhou will decrease gradually However, the Hangzhou meteorological station said that because the surrounding counties and cities may still have artificial precipitation, the subtropical high once again did not have a strong momentum, so in the afternoon of these two days, there may be partial thunderstorm in Hangzhou in the afternoon, but the rain may not be as heavy as yesterday Four warnings were issued by the central meteorological station for the possible high temperature in Jiangnan for 6-8 days The Central Meteorological Station issued four warnings yesterday, including high temperature orange, dry yellow, typhoon blue and rainstorm blue It is relatively rare that four major early warnings are issued in unison First, high temperature The central meteorological station said that yesterday's rain came and went in a hurry From today on, Jianghuai, Jianghan, Jiangnan and other places will continue to maintain high temperature It is estimated that in the next 10 days, there will still be more high temperature weather with the highest temperature over 35 ℃ in Jianghan, Jianghuai, Jiangnan and Chongqing, and the range is large, among which the number of high temperature days in some parts of Jiangnan can reach 6-8 days Yesterday afternoon, Hangzhou meteorological station released a high temperature report again, saying that affected by the subtropical high pressure, it is expected that in the next three days, the city will be dominated by hot and sunny weather, with a maximum temperature of 38-39 ℃ There are also typhoons At 17 o'clock yesterday, the center of the 9th tropical storm "Feiyan" this year is located in the middle of the South China Sea, about 430km southeast of Wenchang City, Hainan Province The maximum wind force near the center is 9-level (23m / s), 7-level wind