dading typhoon classification

In 1964, Typhoon Dading, the strongest typhoon to hit the country in three decades, left half a million people homeless. [12]:77 Its proximity to the Crown colony led to the issuance of tropical cyclone signal no. Nearly a million people were affected by the storm; according to the U.S. Agency for International Development (USAID), there were 56fatalities and 163injuries as a result of Winnie in the Philippines, with a damage toll of US$8million. tropical cyclone, also called typhoon or hurricane, an intense circular storm that originates over warm tropical oceans and is characterized by low atmospheric pressure, high winds, and heavy rain. [63] At the time, the typhoon was located approximately 320km (200mi) south of Shanghai. Some meteorological satellite cloud picture. In Hong Kong, the classification is defined in terms of wind speeds averaged over 10 minutes. [92] An F1 tornado associated with the typhoon occurred south of Takanabe, Miyazaki, without causing casualties. Moreover, to verify the effectiveness and accuracy of the model, the prediction effect and model stability are compared with other models. Eventually in 1990 this 7th unfinished submarine was scrapped. It had no official bounds; it ran year-round in 1964, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. In other parts of the world, these are referred to as hurricanes, typhoons or simply tropical cyclones depending on the region. For example, WSP 80% indicates that 80 times out of 100 forecasts that the storm radius of 30 kt winds passes through a given location, 80% for the WSP-6h indicates that 80 times out of 100 forecasts that the storm radius of 34 kt winds passes through a given location during an . [208][12]:77 Hope continued to track west before curving north on October25 towards an eventually northeastward track. [44], Manila experienced its most damaging typhoon since 1882. J. The Graph Convolutional Network (GCN) is used to process the irregular spatial structure of satellite cloud pictures effectively, and the Long Short-Term Memory (LSTM) network is utilized to learn the characteristics of satellite cloud pictures over time. [75][76] Elsie continued to weaken after emerging into the South China Sea and dissipated on July19. An Advanced Deep Generative Framework for Temporal Link Prediction in Dynamic Networks. classified by size. [256][257][258], After the season JTWC announced that the name Tilda would be removed from the list and the name selected to replace it was Therese which was first used in the 1967 season. [167]:44 Most buildings at the U.S. Marines base in Da Nang sustained water damage and lost power for over a week. [12]:78[218] Meteorological agencies disagree on the evolution of Louise after landfall, with the JTWC and JMA determining that it dissipated on November21. The storm held this intensity for a day before weakening as it neared Luzon contrary to forecasts projecting June to become a typhoon. [12] More storms passed near Hong Kong in 1964 than in any prior year. [46] Winnie weakened as it moved over Luzon and restrengthened upon reaching the South China Sea, taking a west-northwesterly heading. [80][12]:75 The USS Tawasa was dispatched to tow the stricken Weiss out to sea, but was itself grounded on an unforeseen pinnacle upon dislodging the Weiss. The storm weakened within the Gulf of Tonkin and struck Vietnam north of ng Hi on October8 with one-minute sustained winds estimated at 85km/h (45mph) by the JTWC. The wave became Tropical Depression 45W on the 13th. Careers. Kate made a curve to the west as a 60mph(97km/h) tropical storm. [72][6][12]:75 Doris became a tropical storm by 12:00UTC that day as it began to track northwest across the Philippine Sea. [34] This system initially moved towards the north before curving sharply east. The terms "hurricane" and "typhoon" are regionally specific names for a strong "tropical cyclone".A tropical cyclone is the generic term for a non-frontal synoptic scale low-pressure system over tropical or sub-tropical waters with organized convection (i.e. Typhoon Haiyan (Yolanda)- 2013 ; Typhoon Yolanda is one of the strongest tropical cyclones that hit the Philippines on November 8, 2013. [195][12]:77, Dot originated from the interaction of a trough of low-pressure and a tropical wave west of Pohnpei in early October. The next day, the disturbance developed into a tropical depression and gradually took on a more westward course. [6]:239 The newly formed system organized quickly; by the time a reconnaissance aircraft encountered the system 160km (100mi) southwest of Chuuk Lagoon on December9, Opal was already a typhoon with an eye spanning 40km (25mi) across. Modular Neural Networks with Fully Convolutional Networks for Typhoon-Induced Short-Term Rainfall Predictions. Tropical Cyclone Formation and Activity Calendar of 1964. [69] However, the cyclone's winds continued to lessen before the system reached the islands. [47][48] However, the Associated Press reported 89fatalities on July3 while United Press International reported 120fatalities on July5, with property damage estimated at over $30million. The super typhoon had gusts of as strong as 315 km/h. 91730304/National Natural Science Foundation of China, Uson M.A.M. The depression quickly strengthened into Tropical Storm Kate the same day. A tropical cyclone, also known as a typhoon, is one of the most destructive weather phenomena. [12]:76 On September4, Sally intensified into a typhoon and passed over Guam the next day with one-minute sustained winds of 155km/h (100mph). This initial disturbance traveled west-northwest, passing near Ulithi and Yap. 1753, June 24 - very strong typhoon in Siquijor, Cebu and southern Negros 1756, June 25 - strong baguio in Manila Bay 1800 - 1900. [167]:77 The highest rainfall total over a three-day period was 470mm (19in). 2020 Dec;50(12):4946-4957. doi: 10.1109/TCYB.2019.2920268. [12]:77 This intensification was attributed to the instrusion of colder air into the typhoon's circulation, causing a surge of winds in the lower levels of the atmosphere during a relatively short timeframe. [221][222] The CMA lists the Marge as a continuation of Louise. [6]:47 Weakening commenced thereafter as the center of Sally passed north of Luzon on a west-northwestward heading on September9. The JTWC assessed that Olga lasted more briefly, beginning as a tropical depression on August23 and peaking as a tropical storm the next day with one-minute sustained winds of 85km/h (50mph). Several hours later, the storm made landfall in central South Vietnam at this strength. [206], Anguar and Peleliu suffered widespread damage with the toll ranging between US$50,000US$500,000. [141] Numerous rain-triggered landslides destroyed homes and blocked roads, resulting in most of the casualties associated with the typhoon. government site. The tropical storm passed south of Hainan and made landfall on Vietnam near Vinh on October23, after which it dissipated. [6]:98 The storm's winds continued to increase, and on July3 its winds reached 185km/h (115mph) before the rate of intensification stalled. Its intensity oscillated as curved west and neared central Vietnam, peaking in strength with winds of 95km/h (60mph) on September26; these winds were inferred from maritime observations near the storm. Fig. The JTWC assessed Helen to have reached its peak intensity on July30 with sustained winds of 240km/h (150mph) and a central pressure of 930hPa (27.46inHg). [117][12]:76 Maintaining a west-northwestward heading, Kathy reached typhoon strength on August13,[117] passing well south of Tokyo on approach towards the Ryukyu Islands. [42], Typhoon Winnienamed Dading in the Philippines[45][15]originated from a mid-Pacific trough, which organized into a cyclonic circulation on June21 west-southwest of Pohnpei. [179] At least 64ships were sunk with another 192damaged or lost. [137][6][22], Tropical Storm Pamela was first detected on imagery from the TIROS weather satellites on August25. The 1964 Pacific typhoon season was the most active tropical cyclone season recorded globally, with a total of 39 tropical storms forming. [6]:177[12]:76 Tilda's winds reached typhoon intensity on September14. [12] It moved towards the northeast across the Philippine Sea and became a tropical depression on July25. Schematic diagram of Graph Convolutional Network (GCN) structure. [70][71] By July10, Cora had weakened to a tropical depression. The two agencies determined that a second distinct tropical cyclone east of the Philippines, named Marge by the JTWC, formed concurrently. . 9 December 2022: The Fifty-fifth Session of the Typhoon Committee which will be held from 07 to 09 March 2023. [64] There, sustained winds reached 138km/h (86mph), punctuated by a maximum gust of 201km/h (125mph). [206][205] Fran continued north before curving east after October20, eventually transitioning into an extratropical system by October21 and dissipating on October23 over the open Pacific. Later that day, Opal made landfall on central Luzon with one-minute sustained winds of 140km/h (85mph). The Typhoon class was developed under Project 941 as the Russian ''Akula'' class (), meaning shark. [124] Kathy's effects flooded almost 1,700homes and destroyed 8others in Amami shima; winds there reached 138km/h (86mph). At the time, it was located southeast of Wake Island. Accurate classification or prediction for typhoon intensity is crucial to disaster warning and mitigation management. [113] Four people were killed after a mudslide pushed into a refugee camp and razed three houses Kwun Tong, with the 20,000m3 (700,000ft3) surge of mud placing areas under 7.5m (25ft) of debris. Some meteorological satellite cloud picture samples. Eng. The authors declare no conflict of interest. Timeline of tropical activity in 1964 Pacific typhoon season, The 1964typhoon season was the most active Pacific typhoon season on record. [12][111] Signboards and trees were also brought down by the typhoon's winds. [12]:83[6]:232 Two days later, the system became a tropical depression, and reached tropical storm intensity on November15. Can. PAGASA assigns names to tropical depressions that form within their area of responsibility and any tropical cyclone that might move into their area of responsibility. After briefly taking a northeasterly track, Iris turned towards the southeast and reconnaissance planes recorded a developing eyewall. [34][12]:74 The storm weakened over mainland China and dissipated on May30. As the typhoon exited it slowed down and remained quasi-stationary for 2 days at the Spratly Islands dumping heavy rains at Northern Palawan. 2022 May 31;8:e953. By using the Visual Geometric Group's model, VGG-16, with images preprocessed with fisheye distortion, which enhances a typhoon's eye, eyewall, and . [61], On June26, a disturbance formed from an easterly tropical wave southeast of Guam and strengthened into a tropical depression later that day. An official website of the United States government. The Salt Lake Telegram quoted Manila residents on how Typhoon Dading was the worst storm to hit the capital since 1934. [12] The effects of typhoons in 1964 led to a 3.1percent decrease in rice output from the Philippines. [247] The total cost of damage caused by Opal in the Philippines was estimated at US$25million. The results show that: the algorithm performance of this model is better than other prediction models; the prediction accuracy rate of typhoon level classification reaches 92.35%, and the prediction accuracy of typhoons and super typhoons reaches 95.12%. [11], The active typhoon season was also impactful. The area is very likely to be hit directly by the eye of the typhoon. Super typhoon: the maximum average wind speed near the bottom center is over 51.0 meters per second or level 16 or above. to houses and small vessels; many people drowned. Bookshelf [12]:77 An eye emerged on Nimbus satellite imagery on September20,[174]:159 and on September21, Wilda reached its peak intensity over the Philippine Sea with one-minute maximum sustained winds of 280km/h (175mph) as estimated by the JTWC and a minimum central pressure of 895hPa (mbar; 26.43inHg). The JTWC was tasked with warning U.S. government agencies on tropical cyclones in the northwestern Pacific, in addition to researching and orchestrating aircraft reconnaissance into such storms. [43][40] Further inland, the storm relieved drought conditions in the Chinese province of Guangdong. Typhoon is determined by intensity and size. The island also recorded 124mm (4.9in) of rain from Betty. [110] Gusts of 220km/h (140mph) reached the Crown colony, flattening over 200homes; three people were killed and six were injured by flying debris. [74] The typhoon then weakened rapidly from this peak; upon its landfall on the eastern coast of southern Luzon on July17,[12]:75 it was a 140-km/h (85mph) typhoon, with its intensity lowering to tropical storm stauts over the island shortly afterwards. [98] Between August67, Ida moved across northern Luzon with these winds. [185][186] Gale-force winds from Wilda reached the Tokyo area, damaging roofs at the Tokyo Olympic Village and uprooting trees two weeks before the start of the 1964 Summer Olympics. [87] The typhoon passed within 160km (100mi) of Iwo Jima around noon that day. Dading Chong. [12] At least 576people were killed, though the Philippine Red Cross recorded 631fatalities, along with 157missing people and 376,235people displaced by the typhoon. [22][138], The tropical disturbance that organized into Ruby arose from a tropical wave west of Saipan on August29. View the histogram for minimum pressure. [6] The anomalous strength of tropical waves observed during the latter-half of the year may have contributed to season's high activity. and transmitted securely. [59] South Vietnam delivered 450metric tons (500short tons) of rice to victims of the storm in the Philippines. [6] The eye spanned 6mi (9km) across at this juncture. J. Dev. Naze lost power during the storm. 10 Since 1946", "Hong Kong's Lighthouses and the Men Who Manned Them", "Field survey of Typhoon Hato (2017) and a comparison with storm surge modeling in Macau", "1964 Super Typhoon SALLY (1964247N09159)", "Slide Triggered By Typhoon Kills Six In Hong Kong", "Huge Typhoon Sets Hong Kong Chinese Panic", "190 Killed In South Korea Floods, Landslides", Probable Maximum Precipitation, Mekong River Basin, "1964 Super Typhoon WILDA (1964261N12149)", "Meteorological Interpretation of Nimbus High Resolution Infrared (HRIR) Data", "Digital Typhoon: Record of Typhoon in 1964 Season", "Digital Typhoon: Typhoon 196420 (WILDA) - Disaster Information", "Surface Winds of Typhoon Wilda (6420) Over Japan", "Year's Worst Typhoon Lashes Japan Islands", "Typhoon Wilda Brings Death To Kyushu Island", "1964 Severe Tropical Storm ANITA (1964267N17120)", "1964 Severe Tropical Storm BILLIE (1964269N12142)", "10,000 Families Homeless In Luzon Storm", "34 Dead, 70 Hurt As Typhoon Dot Batters Hong Kong", "1964 Severe Tropical Storm FRAN (1964287N13165)", "Rough Log, North Pacific Weather: SeptemberNovember 1964", "1964 Severe Tropical Storm GEORGIA (1964291N11143)", Extratropical Storm Evolution from Tropical Cyclones in the Western North Pacific Ocean, "Another Typhoon Descends on Flood Stricken Vietnam", "1964 Tropical Storm JOAN (1964309N11132)", "1964 Super Typhoon LOUISE:MARGE (1964319N08141)", "Typhoon Bopha hits the Philippines at Cat 5 strength; at least 40 killed", "Digital Typhoon: Typhoon 196431 (LOUISE) - Detailed Track Information", "Digital Typhoon: Typhoon 196432 (MARGE) - Detailed Track Information", "Philippine Officials Inspect Typhoon Loss", "Typhoon Leaves Over 100 Dead In Philippines", "Calamity Is Proclaimed In Philippine Province", "Official Week in Review: November 22 November 28, 1964", "1964 Severe Tropical Storm NORA (1964332N12120)", "1964 Super Typhoon OPAL (1964344N06153)", "Typhoon Opal's High Winds Head For Philippines", "175-M.P.H. Over 70,000homes were destroyed and nearly 45,000were inundated by the typhoon across the country,[177] leaving thousands of people homeless. [49][50][51] The Red Cross enumerated 275injuries. [24][25] A paper published in the Quarterly Journal of the Royal Meteorological Society described the resulting paths of the two storms as an "archetypal example" of the Fujiwhara interaction. [62] According to the agency, Alice was the smallest typhoon of 1964, with a radius of 320km (200mi). Winnie weakened to a tropical storm and traversed Hainan and the Gulf of Tonkin before making a final landfall near Haiphong, Vietnam, on July3. After moving inland, the storm weakened and dissipated over South China on September6. [72], Elsie emerged from a detached portion of a polar trough on July13 near the Northern Mariana Islands; this developed into a tropical depression later that day. After the season, PAGASA announced that the name Dading would be struck from their naming lists due to its impacts and was replaced by Didang which was first used during the 1968 season, this name was later retired by the Agency during the 1976 Pacific typhoon season and replaced with Ditang which was first used during the 1980 season. The storm brought 76-127 mm (3-4 in) to most of the affected areas, with locally higher amounts. [187][188][189] A ship just south of Tokyo Bay reported winds of 76km/h (47mph). 3. [254] Another train with 400500passengers collided with a goods wagon blown onto the tracks by Opal's winds, though no injuries were reported. The Typhoon-class is 566 feet long, 76 feet wide, and nearly 38 feet tall. In order to explore the impact of pandemics on people's lives, it is . doi: 10.1038/s41598-019-42339-y. At a certain point in their lifetime, four of them belonged to the super typhoon category (Wanda 1962; Ruby 1964; Rose 1971 and Hope 1979) while two belonged to the severe typhoon category ( Gloria 1957 and Ellen 1983).. [169] At least three people went missing in Thailand following the flooding from Tilda. That is, we could have a strong but not large typhoon, and also a large but not strong typhoon. Figure (, Model accuracy under different convolution kernels. Winds Hit Island In Philippines", Macau Meteorological Geophysical Services, Digital Typhoon - Typhoon Images and Information, https://en.wikipedia.org/w/index.php?title=1964_Pacific_typhoon_season&oldid=1134397479, Category 5-equivalent super typhoon(SSHWS), This page was last edited on 18 January 2023, at 13:43. [30] The next day, Tess reached its peak intensity with winds of 155km/h (100mph) and a minimum barometric pressure of 960hPa (mbar; 28.35inHg). Early on July13, Doris strengthened into a typhoon while approximately 800km (500mi) east of Luzon. This can often result in the same storm having two names. [55] The loss of roofs was widespread. [253] A freighter was driven ashore by the typhoon at Jose Panganiban. A Category 5 hurricane is defined as having sustained windspeeds of at least 157 mph (253 km/h) over a one-minute period 10 m (32 ft 10 in) above the ground. [12]:77 Banana, sugar cane, and vegetable fields in Amami shima were badly damaged, along with roofs and windows. [105][104] A 3,541-short-ton (3,212-metric-ton) freighter sustained damage to its bilge upon being grounded near Aparri. [87], Winds near the center of Helen were approximately 185km/h (115mph) as it crossed the northern Ryukyu Islands and Kyushu. PMC [29], According to data from the Japan Meteorological Agency (JMA), the progenitor to Typhoon Viola emerged in the South China Sea just east of Vietnam on May21. [169]:159, According to data from the JMA, Wilda began as a tropical storm east-southeast of Guam on September16, marked by a large mass of clouds and associated rainbands. Bethesda, MD 20894, Web Policies [218] This initial tropical cyclone was named Louise by the JTWC. [12]:76, Lorna began west of the Mariana Islands on August10 and took a northeastward path throughout its duration. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean. Feature extraction result of some convolution kernels. By comparison, the Ohio subs, America's largest, displaces a 'mere' 19,000 tons, slightly over a third of the Typhoon's mass. 1 - tropical cyclone winds of 30-60 kph are expected within the next 36 hours. [12]:75 An aircraft reconnaissance mission observed two concentric eyewalls spanning 11km (7mi) and 80km (50mi) across. PeerJ Comput Sci. [115][22] Later that day, June attained a tropical storm and reached its peak intensity with winds of 75km/h (45mph). TYPHOON (TY) - a tropical cyclone with maximum wind speed of 118 to 220 kph. For mor. Naval Base Subic Bay were evacuated into the South China Sea prior to the storm's arrival and people in low-lying fishing villages left for higher ground. [166], On September19, the JTWC determined that Tilda reintensified into a typhoon after the storm began to move west. Artificial Intelligence Algorithm-Based Economic Denial of Sustainability Attack Detection Systems: Cloud Computing Environments. [77][12], Flossie's peak winds were approximately 75km/h (40mph) at the time of its closest passage to Okinawa, as measured by both aircraft reconnaissance and the USS President Roosevelt. The PAGASA warning system issues a storm signal no higher than Number 2. It weakened as it curved north towards the southern Ryukyu Islands, becoming a tropical storm on July14 and then a tropical depression on July15 while passing near Tarama, Okinawa. official website and that any information you provide is encrypted doi: 10.1109/JOE.2017.2700558. Bille emerged into the South China Sea thereafter, where its winds topped out at 110km/h (70mph). [223][224] The loss of homes on the two islands displaced 178families. [223] The U.S. Typhoon: the maximum average wind speed near the bottom center is 32.7 ~ 41.4 m/s, or level 12~13. 2 - tropical . Construction of a 7th vessel began in 1986, but was never completed. [134][25][24][6]:155 Two days later, it became a typhoon and subsequently reached its peak intensity with winds estimated by the JTWC at 130km/h (80mph) and a central pressure estimated by the JMA of 980hPa (mbar; 28.94inHg). The 1964 Pacific typhoon season was the most active season in recorded history with 39 storms. [166][202][200] The official death toll from the storm in Hong Kong enumerated 26fatalities and 85injuries with 10unaccounted for,[13]:74 though press reports at the time indicated a higher death toll. [27] The strong substropical ridging continued into October, leading to similar storm paths. Proudly created with Wix.com. [6]:129 Helen moved across the northern Ryukyu Islands and southern Kyushu on August1 and entered the Yellow Sea as a weakened typhoon. The cyclone weakened inland and rapidly dissipated over Thailand on October8. [29][6]:50,74 During this process, it strengthened into a tropical storm, weakened to a tropical depression, and reattained tropical storm intensity before heading on an east-northwestward to northeastward trajectory. [46][58] Manila was placed under a state of emergency following Winnie, with government agencies deploying medical and rescue teams to affected areas amid widespread power outages. All of the storm names here are used for the first time (and only, in case of Dading). In 2005 the Dmitry Donskoi, the only remaining example of the class still in active service, successfully tested Russia's relatively new RSM-56 . [44][12]:74 The typhoon attained sustained winds of 165km/h (105mph) shortly before moving ashore Calabarzon on June29;[44] its eye passed directly over Manila. [175] Wilda slightly weakened following peak strength before curving northward and making landfall on Kagoshima on September24; one-minute sustained winds three hours prior to landfall were estimated to be 185km/h (100mph). View the histogram for maximum wind. The probability is a measure of how likely it is that a certain event will occur. [12]:78[219] On December12, Opal reached its peak intensity with one-minute sustained winds of 315km/h (195mph) and a central pressure of 895hPa (26.43inHg). But typhoon intensity-related feature extraction is a challenging task as it requires . HHS Vulnerability Disclosure, Help Marie intensified into a tropical storm by August15 and then curved north as it interacted with nearby Typhoon Kathy. What does the probability indicate? Draw typhoon birthplaces on the map. [73][6]:50 Rainy squalls associated with Elsie caused extensive flooding in Manila and the northern Philippines, inundating buildings and streets. The old typhoon category will be further divided into three levels, viz T, ST and SuperT. [12]:76 According to the JTWC, Tilda's one-minute maximum sustained winds crested at 165km/h (105mph) before their speeds began to decrease. TYPHOON WINNIE (LOCAL NAME: TYPHOON DADING) Typhoon WINNIE begun on 24-June-1964, a Category 3 typhoon, it was the most destructive . [6]:59 The interaction of a polar trough and easterly wave led to the genesis of a vortex southeast of Japan by August11. [241] The Philippine Weather Bureau initially issued storm warnings for the eastern Visayas and Mindanao on December13 in anticipation of Opal;[242] these warnings were later extended to southern and central Luzon. The primary objectives of data classification are: To consolidate the volume of data in such a way that similarities and differences can be quickly understood. [12]:78[6]:47 Between December1012, Opal moved between Yap and Palau, passing 65km (40mi) north of Kayangel with one-minute sustained winds of 260km/h (160mph). Kate strengthened into a typhoon on the 15th and a peak at 90mph(145km/h) winds the next day. On August23, Kathy made landfall on Kagoshima Prefecture with winds of 130km/h (80mph) and weakened to a tropical storm as it crossed the Seto Inland Sea and southern Honshu. Water inundation reached 0.6m (2ft) in some cities and railways and highways suspended traffic. [6]:141 This system developed into a tropical storm the next day east of Iwo Jima based on ship observations. [6]:11 The JTWC issued 730warnings on 26typhoons, 14tropical storms, and 5tropical depressions. Looking to mix things up in the classroom? The system curved towards the north and east before dissipating in the Sea of Okhotsk on August5. [46] Approximately 500,000people were rendered homeless in the Manila area and in the central provinces of Luzon following the razing of thousands of homes;[54][12]:74 most of these homes were nipa huts and "makeshift dwellings". Billie had already begun to weaken on approach to land but diminished further once over Southeast Asia; the storm and its remnants continued tracking west into Myanmar before dissipating on October3. Stud. [3] The China Meteorological Administration (CMA), Hong Kong Observatory (HKO), Japan Meteorological Agency (JMA), and Joint Typhoon Warning Center (JTWC) each maintain tropical cyclone databases that include their respective intensity and path analyses for 1964, resulting in disparate storm counts and intensities. With effect from 2009, a new classification is used and consists of 6 categories as follows: [172][12]:77 The system quickly strengthened and reached tropical storm and later typhoon intensity on September14. A total of 6 Typhoon class vessels were commissioned between 1981-89, entering service to form part of the 1st Flotilla of Atomic Submarines, within the Western Theatre of the Northern Fleet, and based at Nyerpicha. "[17] Gradual weakening followed,[12]:74 with winds diminishing below typhoon intensity on May22. [190][191]:52, Tropical Storm Billie began southwest of Guam on September24. [88] On August3, Helen weakened to a tropical storm and made landfall near Dalian in Liaoning. [72][12]:75 The next day, Doris attained one-minute sustained winds of 150km/h (90mph). The storm weakened over the island but restrengthened over the South China Sea on approach to Hong Kong. [20] A strong high pressure area south of Japan caused most storms during July to take slow and westward paths. [13] The typhoon then became stationary for nearly two days over the South China Sea with its winds concurrently falling to tropical storm intensity according to the JTWC. GCLSTM model; deep learning; prediction system; satellite image; typhoon.