The Impact of Typhoon Ute

The following time is calculated in UTC+8.

Taiwan Province Province, China

The highest tropical cyclone warning signal issued locally: typhoon warning at sea and on land.

At 2: 45pm on July 3rd, central weather bureau issued a typhoon warning at sea. At 8: 30 pm, central weather bureau issued a land typhoon warning.

At 5: 00 p.m. on July 5th, central weather bureau lifted the land typhoon warning. In the afternoon 1 1, central weather bureau lifted the typhoon warning at sea.

Conditions of disaster

Many railways and highways were damaged and traffic was interrupted. 1 person died. The loss of agriculture, forestry, fishery and animal husbandry was nearly 654.38 billion yuan.

Hong Kong

The highest tropical cyclone warning signal issued locally: No.8 northeast gale or storm signal/No.8 northwest gale or storm signal/No.8 southwest gale or storm signal.

On July 2, Ute intensified into a tropical storm, and the radius of the whole system also expanded to about 2000 kilometers. Its appearance was also the most spectacular at that time, and the circulation was large, which matched the strongest typhoon Taipei 1979.

In the early morning of July 3, Ute's giant scale interacted with the subtropical high ridge, which strengthened Hadley circulation and made the subtropical high stronger. Guided by the strong east wind, Ute began to turn to the west-northwest direction, with a moving speed of 38 kilometers. At the same time, due to the divergence difference caused by high-level anticyclone, the northern circulation of Ute began to weaken, on the contrary, the southern semi-circular circulation became stronger and stronger; The configuration of the whole system has also begun to become uneven. However, Ute intensified into a strong tropical storm at noon that day.

On July 4, Ute crossed the Luzon Strait; Facing the northern part of the South China Sea, especially the western region is affected by the strong northwest wind, and the maximum sustained wind speed of Liu Fushan reaches 40 kilometers per hour at noon. When Ute entered the 800 km cordon in Hong Kong, the Hong Kong Observatory issued the No.1 alert signal at 17: 45. At that time, Ute was located about 790 kilometers east-southeast of Hong Kong. At that time, Hong Kong had already begun to be influenced by the surrounding wind fields, turning to the northerly wind, and the clouds were lingering. At that time, the Observatory rarely pointed out in its first tropical cyclone warning that "there is a great chance of hoisting the No.3 strong wind signal tomorrow morning." Hong Kong was influenced by Ute downdraft, and the northwest wind blew dry and hot air from the inland to the coast of Guangdong, which made the weather very hot in the early morning of July 5, with the temperature as high as 33 degrees, the humidity falling below 50% and haze.

On July 5, Ute entered the South China Sea in the early morning, and when it approached the coast of Guangdong, its moving speed slowed down to 25 kilometers per hour. As Ute gradually approached the coast of Guangdong, the Hong Kong Observatory changed the No.3 strong wind signal at 10: 45, when Ute was about 460 kilometers east-southeast of Hong Kong. That afternoon, the weather began to get worse and there was a thunderstorm. Ute is also affected by the topography and divergence of South China, showing a weakening trend; The circulation in the northern half of Ute is obviously weakened, the diameter of the system wind field and circulation is shrinking, and the wind force in the port is still weak. As Ute continued to approach Hong Kong that day, the Hong Kong Observatory changed the No.8 northeast gale or storm signal at 19: 30. At that time, Ute was located about 290 kilometers east-southeast of Hong Kong. Due to the terrain occlusion and the shrinking circulation in Ute Northern Hemisphere, the general wind force in Hong Kong has not been significantly enhanced, and the time for Hong Kong to enter the strong wind circle in Ute Northern Hemisphere has been postponed again and again. At 23: 40, the No.8 northwest gale or storm signal was hoisted. At that time, Ute was about 230 kilometers east-southeast of Hong Kong. After midnight, the northwest wind obviously strengthened to strong wind. After sunrise, Ute moved to about 65,438+0.20 km east of Hong Kong, with strong winds in the west and offshore waters. The highest hourly average wind speed measured at Liufushan and Tianxing Wharf reached 65 and 43 kilometers per hour. The maximum hourly average wind speed measured by the Jishuimen Bridge is 68 kilometers per hour. Affected by Ute, the lowest instantaneous sea level pressure at 5: 021min on July 6th was 980.6 hectopascals.

At 09: 40 on July 6, the Hong Kong Observatory changed the No.8 southwest gale or storm signal to No.8 northwest gale or storm signal. Ute's closest approach to Hong Kong was about 10 that morning, when it was 80 kilometers north of Hong Kong. Generally speaking, the wind in Hong Kong is getting stronger and stronger.

Ute is far away from Hong Kong and further weakened into a tropical storm, and the local wind shows signs of weakening. The Hong Kong Observatory changed the No.3 strong wind signal on July 6 13: 40, when Ute was about 1 10 km northwest of Hong Kong. As the rain began to get heavier, the Hong Kong Observatory issued a yellow rainstorm warning at 12: 30 and a landslide warning at 18. Since then, Ute has not weakened significantly, but maintained the intensity of tropical storms throughout Guangxi. Affected by the saddle-shaped field formed by the westward extension of the Pacific subtropical high ridge and the central China ridge, Ute vorticity remains unchanged, showing the characteristics of monsoon depression with stronger peripheral wind force than the internal and external ones. Deep convection continued to develop in the south of Ute and moved northward, bringing heavy rain to Hong Kong.

After dusk on July 6th, Ute has entered the inland of Guangdong, about 200 kilometers northwest of Hong Kong, and the surrounding heavy rain belt affects Hong Kong. The wind in Hong Kong has picked up again, and the wind in Victoria Harbour has picked up to a strong wind level. The highest hourly average wind speed measured at Kai Tak Station is 40 km/h, and the wind speed at most weather stations is even higher than when typhoon signal No.8 is hoisted. The southerly wind blows offshore to the storm, and Chek Lap Kok has set a record for the highest gust since the wind speed was announced, reaching 122km/h, and the average hourly wind speed is also 75km/h. In addition, the highest gust in Cheung Chau 1 18km/h, the average hourly wind speed is 85km/h, and the highest gust in Tsing Yi1. 88km/h, the highest gust 1 18km/h ... especially because its southeast circulation and the subtropical ridge of the western Pacific absorbed a lot of water vapor from the sea for a period of time after landing, it was still affected by its storm even if it went deep inland. Moreover, the diameter of Ute circulation is more than 2000 kilometers, which explains why the wind force measured by Ute is higher than that of Typhoon No.8 when most weather stations in Hong Kong are affected by low-level jet after landing.

On July 7, when Ute moved to the northwest, more than 400 kilometers away from Hong Kong, the low-level jet that affected Hong Kong began to weaken and further moved away from Hong Kong. All tropical cyclone warning signals are lowered at 1 1: 20.

During Ute's influence on Hong Kong, scaffolding collapsed and trees were blown down in many places in Hong Kong due to strong winds and gale, resulting in one person being injured. An oil tanker was sunk by big waves off Tuen Mun. Fortunately, the crew was rescued. The container terminal was forced to close on the afternoon of July 6, causing traffic congestion near Kwai Chung. Many ferry and bus services were suspended, and the Hong Kong International Airport was paralyzed for nearly 30 hours, affecting more than 300 flights. Ute brought about 150 mm rainfall to most parts of Hong Kong, of which Lantau Island had the largest rainfall, with rainfall exceeding 300 mm. There are 25 reports of floods caused by heavy rains.

The strong wind and low pressure brought by Wuta caused Hong Kong to be affected by the storm surge (that is, the sea level was higher than the normal astronomical tide level) on July 6, and the storm surge was added to the normal high tide that morning, so that the sea level at Tsim Nose Tsui from 9: 00 a.m. to 10 a.m. and that at Mupao Bay was 3.4 meters. The latter is the highest sea level recorded in Victoria Harbour since Typhoon Dai Wen hit Hong Kong in 1962. According to the records of the Observatory, since 1947, the sea level above 3m 13 times has been measured in the bay.

Storm surge caused severe flooding in Tai O and northwest New Territories on July 6, and some villagers suffered heavy economic losses. Some main streets in Tai O have become rivers, and the water depth once reached three meters. The lowest floor of some shacks was completely flooded, and four people were trapped and needed to be rescued by firefighters.

The seafood wholesale market in Liufushan was also flooded, and many shops were forced to close. A wooden boat was washed ashore by the tide. Some villages along the coast of Deep Bay are waist deep, and more than 30 villagers are trapped and need firefighters to rescue them. Some villagers said that the flood was the worst in the past forty or fifty years.

There is also seawater flowing backwards in Sheung Wan, and seawater gushes out from the canal mouth and flows back to the ground, causing some streets to be flooded. It is reported that Yongle Street is more than half a meter deep. The sea also washed up on the waterfront of Kennedy town, and a driver was trapped in the car and needed to be rescued by firefighters.

Macao

The highest tropical cyclone warning signal hoisted locally: No.8 northwest typhoon signal/No.8 southwest typhoon signal.

On the morning of July 1 day, a tropical depression formed in the northwest Pacific (7. 1 degree north latitude and 0/38.2 degree east longitude) and moved to the north-northwest direction. At 8: 00 the next morning, it intensified into a tropical storm at north latitude 10.6 degrees and east longitude 137.4 degrees. It was named Ute, with a central pressure of 990 hectopascals, and the maximum wind force near the center was 75 kilometers per hour. The northwest turned to northwest wind and moved towards the Philippines. In the early morning of July 3, it intensified into a severe tropical storm (north latitude 13.4 degrees, east longitude 133.6 degrees) with a central pressure of 985 hectopascals and a maximum wind force of 92 km/h near the center, and continued to move to the sea area between Luzon and Taiwan Province Province. By 2: 00 p.m., it quickly intensified into a typhoon on the sea surface about 960 kilometers east of Manila (north latitude 15.3 degrees, east longitude 129.5 degrees), the central pressure dropped to 970 hectopascals, and the highest wind force near the center reached per hour 12 1 km. Ute continued to be strong when he crossed the Balintan Strait north of Luzon on July 4. The air pressure in the center is as low as 964 hectopascals, and the highest wind force near the center reaches 130 km per hour. After entering the South China Sea in China, continue to go northwest to west-northwest, facing the south China coast east of Macau; After crossing Dongsha, it began to weaken slightly in the early morning of July 6 and gradually approached the Pearl River Delta. At 8: 00 a.m. on July 6, the coastal area of Guangdong (22.2 degrees north latitude and 1 15.3 degrees east longitude) about 180 kilometers east of Macao weakened into a severe tropical storm. Landing between Hong Kong and Shanwei around 9: 30 am; By noon in Guangdong Province (22.9 degrees north latitude and 1 13.7 degrees east longitude), 90 kilometers north of Macao weakened into a tropical storm again and began to move away from Macao. Ute weakened into a tropical depression again in the interior of China on July 7th. By the evening of July 8, it was completely extinct.