The second round of artificial rain enhancement in Ningbo

Yesterday afternoon, more than 3 o'clock, reporters in Yinzhou unit's office, outside the ring of thunder A small meeting, the rainstorm accompanied by the strong wind will be overwhelming, rain hit the glass, made a great crash The reporter went to the window to have a look There are several small ice crystals on the window Is it hail? Pang Baoxing, the chief forecaster of the meteorological station, confirmed that hailstones did fall in Jiangdong and Yinzhou yesterday Hail of 8 mm was detected at Yinzhou station In the second round of artificial precipitation this year, the temperature dropped 15 ℃ yesterday, the high temperature in Ningbo is still high The city meteorological station issued the seventh red high temperature warning this year Yuyao leads the highest temperature in the city at 41 ℃, the second is 40.9 ℃ in the urban area, and Fenghua ranks the third at 40.7 ℃ This is the first time in the past seven days that Fenghua has stepped down from the first place in high temperature Yesterday afternoon, more than 2 o'clock, Ningbo implemented the second round of artificial precipitation this year The Municipal Office of weather modification has organized 5 shadow operation teams in the city, and successfully implemented 4 batches of rain enhancement operations in Huangtan, Ninghai, shangwanggang, Yuyao and Cixi Henghe, etc., with obvious effect By 5 p.m., the precipitation in Huangtan of Ninghai had reached 55.5mm, that in Dapeng mountain of Cixi was 31.6mm, and that in Yanxi of Yuyao was 11.1mM Yesterday's rain was not only heavy, but also widespread The reporter learned from the city meteorological station that most of the city has rainfall There are short-term heavy rainfall in Zhenhai, downtown, Cixi, East Yuyao, East Fenghua, West Ninghai and West Beilun The rain in the urban area started at more than three o'clock and lasted for about an hour, among which the rainfall in Jiangdong and Yinzhou was relatively large After a rainstorm, not only the air becomes fresh, but also the summer heat accumulated in the morning is washed away After the rain, Yinzhou's temperature dropped from 40.9 ℃ to 25.4 ℃, with a drop of 15 ℃ There was hail in many places The weatherman called it normal yesterday afternoon Many netizens said they saw hail Netizen "Xiaomi mcdoughoufan" even saw snowflakes at the intersection of Canghai Road and Baizhang East Road The city's chief forecaster said hailstones did fall in Jiangdong, Yinzhou and other places, and 8 mm hailstones were detected at Yinzhou station In fact, it is not a rare thing that hailstones appear in the severe convective weather in summer The chief forecaster told reporters that hail is one of the products of strong convection In convective clouds, because of the low temperature at high altitude, water vapor will condense into small water droplets when it is cold with the rise of air flow, and the temperature will continue to decrease with the increase of height When it reaches below 0 ℃, the water droplets will condense into ice particles Under the condition of strong convective weather, because of the strong wind and the strong ascending motion, the ice particles are covered with water drops through the up and down motion, and then roll into hail and fall to the ground As for the snowflakes seen by netizens, the chief forecaster said they may also be small ice particles In the weather records, there was no snow in Ningbo in July The chief forecaster said the snowflakes were lighter and were falling slowly In strong convective weather, the downdraft is very strong, and snowflakes are not allowed to fall slowly At the same time, snowflakes usually only appear under the influence of very cold temperature and extratropical cyclone Therefore, it is likely that small ice particles will be brought down all of a sudden Because the particles are small and densely distributed, they look like snowflakes According to the monitoring of the city's Lightning Protection Center, as of 16:08 yesterday, there were more than 4400 cloud to ground lightning flashes (lightning phenomenon of cloud to ground discharge) in the city, more than 700 in the third district of the city alone Yesterday's strong convective weather, not only thunder and lightning, hail, rainstorm, but also brought strong wind to Ningbo During the rainstorm, the wind force in Yinzhou reached 10, and the wind force in Jiangdong reached 8-9 The chief forecaster said that yesterday's intense convective weather energy release is related to three factors: the high temperature in the morning, the weak cold air in the sky and the weakening subtropical high As for the image, when we burn a lot, because of the weak cold air in the high altitude, the hot air on the ground will form a strong updraft, and because the downdraft of the subtropical high is weakened and cannot be pressed, strong convection will form The reporter learned from the meteorological department that today the highest temperature is still 38-40 ℃ Despite the high temperature, there is still a wave of afternoon showers in most parts of the city today Unfortunately, starting tomorrow, only a few places have the "welfare" of afternoon showers With the strengthening of the subtropical high, 40 ℃ hot and sunny weather returns The temperature in August is not the highest, only higher!