Severe Tropical Storm Trami, known in the Philippines as Severe Tropical Storm Kristine, was a large and catastrophic tropical cyclone that wreaked havoc across the Philippines and later impacted Vietnam, Thailand, and China in October 2024. It was also the first tropical cyclone in a series to impact the Philippines in late 2024, before Typhoons Kong-rey, Yinxing, Toraji, Usagi, and Man-yi.
The twentieth named storm of the annual typhoon season, Trami developed into a low-pressure area and later into a tropical depression west of Guam on October 19, moving westward along the southern periphery. After entering the Philippine Area of Responsibility, PAGASA named the depression Kristine on October 20. Early the next day, the Japan Meteorological Agency (JMA) upgraded the system to a tropical storm, naming it Trami, as spiral bands of deep convection formed around the low-level circulation. By October 23, Trami intensified into a severe tropical storm as it moved west-northwestward and made landfall in Divilacan, Isabela. The following day, Trami emerged over the coastal waters of southern Ilocos Sur, with surface observations and radar data indicating a lee-side jump had occurred with its mid-level rotation surviving into the eastern South China Sea, leaving the remnants of its circulation center over Northern Luzon; later, satellite imagery revealed a consolidating central dense overcast, indicating a well-defined circulation with deep convection located to the south. By late October 26, both the JMA and the Joint Typhoon Warning Center (JTWC) reported that Trami had reached its peak intensity, with sustained winds of 110 km/h (70 mph) over 10 and 1-minute intervals, and a central pressure of 970 hPa (28.64 inHg). The storm made landfall the next day in Thua Thien-Hue and Da Nang and moved near the Laos–Vietnam border, where its circulation center became fully exposed before making a U-turn and gradually shifted back toward the coastal regions of Vietnam. The JMA continued to monitor the system, which further weakened into a low-pressure area at 18:00 UTC on October 29.
PAGASA forecast that the wind flow directed towards the storm would bring strong to gale-force winds to several regions in the Philippines, prompting the issuance of Tropical Cyclone Wind Signals for various areas. A red alert warning was issued for the Bicol Region, the Cordillera Administrative Region, and the Ilocos Region, while officials from Batanes and Ilocos Norte had expressed concerns about potential further damage to their provinces, as they were still recovering from Typhoon Krathon earlier in the year. In Daet, Camarines Norte, PAGASA recorded 528.5 mm (20.81 in) of rain from Trami, marking the highest 24-hour rainfall since the 1920s and surpassing the previous record of 507.5 mm (19.98 in) set in December 2000. Coastal areas of Hainan Province in South China issued a red alert, the highest warning level, due to an approaching storm, forcing over 40,000 people to evacuate. Strong winds in Da Nang, toppled trees and billboards, while heavy rainfall in Quang Tri province caused severe flooding, leaving 18,000 people without power. In Thailand, flooding was reported in Bang Sai District, Phra Nakhon Si Ayutthaya province. Overall, Trami was responsible for 178 deaths, with 23 people reported missing and 151 others injured, causing approximately US$426 million in damages.
Meteorological history
The origins of Severe Tropical Storm Trami can be traced back to October 19, when the Japan Meteorological Agency (JMA) reported a low-pressure area located 633 km (394 mi) west of Guam.[1] The United States Joint Typhoon Warning Center (JTWC) described it as a very weak vortex with light winds wrapping around the circulation, along with deep moisture fields to the southwest beginning to encircle the vortex.[2] The low-pressure area later moved westward slowly before it was designated as a tropical depression by the JMA.[3] At 15:00 UTC that day, the JTWC issued a tropical cyclone formation alert, indicating a consolidating low-level circulation center bounded by formative convective banding wrapping around its northern and southern edges.[4] The depression was moving westward along the southern periphery of a mid-level subtropical high, which made it favorable for tropical cyclogenesis due to low vertical wind shear, warm sea surface temperatures, and high ocean heat content.[5] The following day, the JTWC designated the system as 22W, as low-level banding wrapped into the circulation center, with a tightly curved convective band wrapping along the eastern edge of the circulation.[6] After entering the Philippine Area of Responsibility, the depression was namedKristine by the PAGASA at 05:00 PHT on October 21 (21:00 UTC on October 20) and was embedded within the larger trough that extended from the Philippine Islands eastward almost to Guam.[7][8]
Early the next day, satellite imagery revealed that the depression was exposed, featuring elongated circulation and convective bands wrapping around the center.[9] At 18:00 UTC that day, the JMA upgraded the system to a tropical storm and named it Trami,[10] with spiral bands of deep convection starting to wrap around the low-level circulation.[11] Trami was moving westward along the southern edge of a mid-level subtropical high, developing spiral bands of deep convection that wrapped around a partly exposed low-level circulation center just east of Luzon Island,[12] while its deep convective banding was displaced over the southwestern quadrant due to northeasterly vertical wind shear.[13] As Trami approached Luzon, its central dense overcast (CDO) became sheared and displaced from its central circulation,[14] featuring moderate upper-level outflow and a partially exposed circulation center located to the northeast of the primary broad central convection.[15] At around 06:00 UTC on October 23, the JMA reported that Trami had intensified into a severe tropical storm as it was moving west-northwestward along the southwestern edge of a mid-level subtropical high,[16] with deep convection developing in the southwestern quadrant of a broad, partially exposed low-level circulation.[17] At 12:30 AM PHT on October 24 (16:30 UTC on October 23), the storm made landfall in Divilacan, Isabela,[18][19] where it exhibited a circular CDO characterized by fragmented convection as it moved across central Luzon.[20] The following day, Trami emerged over the coastal waters of southern Ilocos Sur,[21] with surface observations and radar data revealing that the storm had undergone a lee-side jump,[22] leaving the remnants of a circulation center over Northern Luzon while mid-level rotation shifted slowly westward into the eastern South China Sea;[23] later, satellite imagery showed a consolidating CDO, indicating a well-defined circulation with most of the deep convection situated to the south.[24]
As it moves westward along the southern periphery,[25] satellite imagery indicates an asymmetric system, featuring minimal significant convection in the northern circulation, while the southern circulation displays a convective mass with cloud tops colder than −91 °C (−132 °F).[26] By late October 26, both the JMA and JTWC noted that Trami had reached its peak intensity,[27] with sustained winds of 110 km/h (70 mph) over 10 and 1-minute intervals, and a central pressure of 970 hPa (28.64 inHg).[28] Trami encountered strong easterly vertical wind shear as it approached the coast of Vietnam,[29] which caused its core convection to become more linear.[30] It made landfall in Thua Thien-Hue and Da Nang at about 10 AM local time on October 27,[31] before drifting slowly inland while moving southwestward over the past few hours.[32] The storm rapidly weakened as it moved around the Laos–Vietnam border,[33] causing the circulation center to become fully exposed as it weakened into a tropical depression.[34] It then moved southwestward due to weak steering flow before making a U-turn and gradually moving toward the coastal regions of Vietnam.[35] At 21:00 UTC on October 28, the JTWC discontinued warnings on the system as its mid-level rotation winds were displaced from the center.[36] The JMA continued to monitor the system, which further weakened into a low-pressure area at 18:00 UTC the following day.[37]
A red alert warning has been issued for the Bicol Region,[43] the Cordillera Administrative Region,[44] and the Ilocos Region.[45] The NDRRMC reported that classes were suspended in 1,168 areas, including 782 municipalities where work operations were also halted, and 168,039 people were preemptively evacuated.[46] Following this, the Regional Disaster Risk Reduction and Management Council activated all response clusters, urging communities to take necessary precautions in preparation for Trami.[47] Orange rainfall warnings were also issued for Eastern Samar, Samar, Biliran, the northern portion of Leyte, and northern Cebu, with PAGASA cautioning that flooding could occur in low-lying areas.[48] The Office of Civil Defense anticipates that the storm will affect approximately 30 million individuals across different regions and has announced that it has initiated the Charlie protocol—its highest level of emergency readiness—in seven areas due to these anticipated effects.[49][50] The Philippine Institute of Volcanology and Seismology also raised lahar advisories for Mayon Volcano.[51] Officials from Batanes and Ilocos Norte expressed concern about the potential for further damage to their provinces due to the expected impact of the storm, especially since these areas were still recovering from Typhoon Krathon (Julian) in 2024.[52] The Magat, Ipo, San Roque, Ambuklao and Binga Dams opened spillways as a precaution.[53]
Trami was expected to be the sixth typhoon to strike Vietnam according to the National Center for Hydro-Meteorological Forecasting.[73] Deputy Prime Minister Trần Hồng Hà has urged relevant government agencies to prepare for Trami's impact.[74] A total of 285,480 soldiers and militia personnel, along with 12,503 military vehicles, were deployed in response to the impending storm.[75] The Civil Aviation Authority of Vietnam reported that four airports in central coast Vietnam, from north to south, included Đồng Hới, Phú Bài, Đà Nẵng, Chu Lai, would suspend operations, while authorities in Quảng Bình announced a ban on all coastal activities starting at midnight on October 27.[76][77] Quang Nam province has evacuated 4,412 households, totaling 18,306 individuals across 10 localities, while Da Nang has relocated more than 6,200 residents from boarding houses and temporary accommodations to safer areas.[78] The coastal areas of Hainan Province in South China issued a red alert, the highest warning level, due to an approaching storm,[79] which forced over 40,000 people to evacuate.[80]
The leader of the Nam Trà My district announced that the locality has prepared an evacuation plan for 1,341 households, totaling 5,832 residents, due to the risk of landslides from heavy rains associated with the storm.[81] The Thai Meteorological Department has cautioned that Trami will bring heavy rainfall and strong winds to Thailand.[82] On October 23, the Central Weather Administration issued heavy rain warnings for the Greater Taipei and Yilan–Hualien areas despite Trami not expecting to directly affect Taiwan.[83][84] The Hong Kong Observatory (HKO) issued a signal number 1 warning for the city on October 25 at 1:40 AM.[85] At 10:40 AM on October 26, the HKO issued a signal number 3 warning,[86] and the following day, at 12:20 AM, they announced the cancellation of all tropical cyclone signals.[87]
Trami caused heavy rainfall that led to landslides in Bato, Catanduanes,[88] and heavy flooding in Albay,[89] where 413 mm (16.3 in) of rain fell within 17 hours, the highest since Typhoon Durian (Reming) in 2006,[90] and the equivalent of two months of average precipitation.[91] In Daet, Camarines Norte, PAGASA recorded the highest 24-hour rainfall since the 1920s, with Trami dumping 528.5 mm (20.81 in) of rain and surpassing the previous record of 507.5 mm (19.98 in) set in December 2000.[92] Officials in Naga said that around 700 mm (28 in) of rain fell on the city, equivalent to 2.5 months of average precipitation, causing floods from the Bicol River basin that affected 30% of its territory and 70% of its population.[93] Trami brought torrential rainfall over a 24-hour period, leading to what could be considered the worst flooding in the Bicol Region since 1969.[94] Heavy rains were reported in the Visayas, Mindanao, and parts of Luzon due to the storm's trough.[95] In Bacolod, over 281 residents from two barangays were evacuated due to flash floods triggered by heavy rains from the storm,[96] while 316 families were evacuated in Negros Occidental.[64] Trami also caused flooding in Sorsogon, Catanduanes, and Northern Samar.[97] Heavy rains from Trami have caused flash floods in several regions within the provinces of Maguindanao del Sur, Maguindanao del Norte, and Sultan Kudarat.[98] Nearly all of Naga, Camarines Sur was submerged in floodwaters reaching up to 1.8 m (6 ft),[99] leading to forced evacuations after the Naga River reached critical level.[100] A storm surge inundated six barangays in Lingayen, Pangasinan.[101] Trami caused Batangas province to experience precipitation equivalent to "two months' worth of rain," totaling 391.3 mm (15.41 in), on October 24–25.[102] At least 6,034 people were evacuated in the province, while the Batangas Provincial Hospital in Lemery halted patient admissions after floodwaters entered its wards and emergency room,[103] and a landslide occurred in Talisay, resulting in 20 fatalities.[104] Water levels in towns along Taal Lake increased by 3 ft 3 in (1 m),[105] while parts of Bulacan were submerged in up to 4 ft 11 in (1.5 m) of water.[106]
Tropical Storm Trami's casualties in the Philippines
A person was reported missing after their banca broke down in the waters near Merida, Leyte,[107] while his two companions were rescued in Pilar, Cebu.[58] Another person died in the sinking of a banca in Obando, Bulacan, while nine others were rescued.[108] A portion of the Maharlika Highway linking the Southern Tagalog and Bicol Regions was blocked by floods in Lopez, Quezon.[109] Landslides blocked roads in San Mariano, Isabela[110] and Calanasan, Apayao, while strong winds were experienced in Laoag, Ilocos Norte, and heavy rainfall and flooding were reported in Pili, Camarines Sur.[111] Several power lines in Luzon and the Visayas have been disconnected, as determined by the National Grid Corporation of the Philippines.[112] In Dolores, Eastern Samar, strong winds nearly toppled several trees, and schools in Jipapad were flooded.[113] In Guinobatan, Albay, some roads in the area were impassable due to a lahar flow from Mayon Volcano.[114] At least three villages were partially covered by lahar from Mayon Volcano after heavy rainfall from Trami.[115] Fifty houses were destroyed by strong waves in Sibuco, Zamboanga del Norte,[64] while several cottages were also destroyed along the coast of San Juan, La Union.[116] In Surigao City, ten houses were destroyed along with hundreds of cottages by waves with a height of up to 3.0 m (10 ft).[117] Two Bicol University campuses sustained major damage to fields, windows, and other important parts,[118] while Naga Cathedral was submerged in floodwaters reaching waist levels.[119] Multiple places across Bicol sustained chest-high flood waters, with multiple calls for help.[120] In Bula, Camarines Sur, trapped residents accused private rescuers of charging fees of up to ₱5,000 (US$101.52) before they can be evacuated by boat.[121]Globe Telecom reported outages affecting 75% to 92% of customers in Catanduanes, Camarines Sur, Albay, and Camarines Norte.[122]
In Quezon, floods reached a depth of 3.0 m (10 ft).[123] A total of 101,148 people were displaced in Camarines Sur alone,[124][125] while 17,000 were displaced in Albay[126] and 11,000 in Quezon.[127] Sixty people were evacuated in Palanan, while 316 were evacuated from the coast near Divilacan.[128] More than 3,800 people were evacuated in Cagayan,[129] while 1,438 were evacuated in Ilagan. A landslide partially blocked a section of the Nueva Vizcaya-Benguet road in Kayapa.[130] In Tuguegarao, around 3,230 ha (8,000 acres) of crops were destroyed.[131] Around 1,104 people were evacuated in Rizal.[132] At least seven houses on Apo Island in Dauin, Negros Oriental, were destroyed by strong winds and massive waves.[133] Eight-four houses in Catanduanes, Masbate and Camarines Norte were destroyed while 857 others were damaged.[124] At least four houses in Sagay, Camiguin and three others in Cagayan de Oro were also destroyed.[134] Some areas in Metro Manila were experiencing flooding as a result of the storm,[135] resulting in the evacuation of 588 people in Malabon and five families in Marikina.[136] A second alarm warning was raised in the Marikina River after its water level reached 16.8 m (55 ft).[137] Operations at the LRT Line 1 were partially disrupted by a tree that fell into the tracks.[138] In General Luna, Quezon, the mayor described the floods as the worst to hit the town since Typhoon Angela (Rosing) in 1995.[139] Six bridges in Isabela and one in Quirino were rendered impassible due to increased water levels.[140][141] Two cargo vessels ran aground in the Port of Batangas,[142] while two others ran aground off Minglanilla, Cebu and San Agustin, Romblon respectively. A dredger ran aground off Binmaley, Pangasinan.[143][144] The cargo vessel MV Sta. Monica-A1, carrying ten crew and more than 100 water buffaloes, went missing while seeking shelter from the storm between Palawan and Occidental Mindoro.[145]
As of December 5, 2024[update], the National Disaster Risk Reduction and Management Council reported that 9,652,607 people were affected, with 617,168 displaced from their homes, resulting from the combined effects of Trami and Typhoon Kong-rey (Leon) in 2024. Additionally, 370 cities experienced power outages, and 207,876 houses were damaged. Flooding continued to impact at least 839 areas across the country. The estimated damage to the agricultural sector was ₱7.83 billion (US$159 million), with even higher losses in infrastructure, exceeding ₱10.57 billion (US$214.54 million). Overall damage was ₱18.4 billion (US$373.54 million). Telecommunications outages were reported in 65 municipalities. More than 162 people died, 137 were injured, and 22 others were reported missing.[nb 1] The Bicol Region was most affected, accounting for 3,200,842 of the affected individuals, followed by Calabarzon with 1,351,515 people and Central Luzon with 1,092,915. Ninety-eight seaports also suspended operations, while 869 sections of road and 113 bridges were rendered impassable. Additionally, 111,898.77 ha (276,507.9 acres) of agricultural land were affected.[46]
Elsewhere
In Vietnam, Trami's strong winds caused trees and billboards to fall in Da Nang,[146][147] while heavy rainfall in Quang Tri province resulted in severe flooding of several bridges and left 18,000 people without power.[148] In Thua Thien-Hue, storm surges led to flooding in Phu Thuan Commune of Phú Vang district.[31] The storm's heavy rain caused flooding in 326 houses and damaged nearly 1,269 ha (3,140 acres).[149] Rainfall across the country ranged from 200–400 mm (7.9–15.7 in) in Hà Tĩnh, Quảng Ngãi, Binh Dinh, and the Northern Central Highlands,[150] while Da Nang, Quảng Ngãi and Kon Tum received 70–150 mm (2.8–5.9 in).[151] At least eight people died due to the storm's impact in Quảng Bình and Thua Thien-Hue provinces,[149] while 14 others were injured.[149] Total damage in Quảng Bình Province reached 500 billion dong (US$20.6 million),[152] including 400 billion dong (US$16.7 million) for damage in Lệ Thủy District.[153]
In Thailand, flooding was reported in Bang Sai District, Phra Nakhon Si Ayutthaya province, where the body of an elderly man was found.[154] In China, at least seven people were reported dead, and one was missing after heavy rainfall from Trami affected many parts of Hainan.[80] In Hainan Province in South China, 93,000 people were affected, 26,000 people were evacuated and 2,000 ha (4,900 acres) of crops were affected, with a direct economic loss of 230 million yuan (US$32.2 million).[155]
The local government unit of Naga and former Vice President Leni Robredo urgently appealed for trucks, pump boats, and other resources to assist in rescuing flood victims affected by Trami.[164] Robredo mobilized her Angat Buhay Foundation to support the residents of Naga.[165] President Bongbong Marcos announced that the government would extend all support to Naga and other regions in Camarines Sur impacted by Trami.[166] Marcos announced that sites under the Enhanced Defense Cooperation Agreement across the country would be used for relief and rescue efforts in areas affected by Trami.[167] On October 25, Marcos conducted aerial inspections in Metro Manila, Laguna, Batangas and Cavite.[168] House Speaker Martin Romualdez coordinated the request for the immediate release of ₱390 million (US$7.92 million) in cash aid, which will be distributed to those affected by the storm.[169] The Office of the Vice President has commenced delivering assistance and relief operations to residents severely impacted by Trami.[170] The Department of Social Welfare and Development (DSWD) reported that it has delivered over ₱55.2 million (US$1.12 million) in humanitarian aid to families impacted by the storm.[171] According to the NDRRMC, a state of calamity has been declared in 256 cities and municipalities due to the severe impact of the storm.[46] A price freeze was issued in areas placed under a state of calamity following the storm, covering important and local goods.[172] The Energy Regulatory Commission also ordered energy firms to suspend the disconnection of customers from the electrical grid and implement flexible bills payment schemes in affected areas until December 2024.[173] The Department of Education announced that it will roll out the Dynamic Learning Program in November to address learning loss caused by class disruptions from Trami.[174] The Metropolitan Manila Development Authority deployed clearing and search-and-rescue teams to assist areas in the Bicol Region affected by heavy rains and floods from Trami,[175] while the Philippine Red Cross was preparing to dispatch a water tanker and a food truck to Albay.[176] The Quezon City government committed ₱10 million (US$203,045.69) in aid to assist nine local government units in the Bicol Region that were severely impacted by Trami.[177]
The Philippine Basketball Association announced that proceeds from the first game of the 2024 PBA Governors' Cup finals, scheduled for October 27, would be donated to help victims of Trami.[178] Additionally, the Pinoy pop music groups Bini and SB19 have launched a donation drive to support those affected.[179][180] Bini announced that ₱1 million (US$20,304.57) from their Grand Biniverse concert ticket sales would be donated to ABS-CBN Foundation's Sagip Kapamilya[a] program to support relief efforts for the victims of Trami.[181]Toyota Motor Philippines has committed ₱5 million (US$101,522.84) to the national government to support relief efforts for Trami victims,[182] while the ACT-CIS Partylist has donated 2,000 sacks of rice and ₱1 million (US$20,304.57) in financial assistance to those impacted by the storm.[183] The city government of Bacolod extended the official celebrations for the MassKara Festival to October 31 from its initial conclusion date of October 27 to help businesses recoup losses incurred due to the storm's effects.[184] On October 29, a Philippine Army unit conducting relief operations in Pio Duran, Albay, was ambushed by suspected New People's Army rebels, injuring a soldier.[185] Three vessels from the Philippine Coast Guard—BRP Cabra, BRP Malabrigo, and BRP Malapascua—were deployed to carry roughly 9,000 boxes of relief goods.[186] The National Housing Authority was enforcing a one-month moratorium on housing amortization for borrowers impacted by Trami.[187] On November 2, President Bongbong Marcos declared that November 4 would be a day of national mourning for the victims of Trami.[188] On that day, Marcos personally attended ceremonies for the victims in Talisay, Batangas.[189] During the 11th anniversary of Typhoon Haiyan (Yolanda), Marcos emphasized the importance of avoiding complacency in disaster preparedness, noting that the country is still recovering from Trami.[190] In the wake of the storm, the Philippines had recently been impacted by five other tropical cyclones—Typhoon Kong-rey (Leon), Typhoon Yinxing (Marce), Typhoon Toraji (Nika), Typhoon Usagi (Ofel), and Typhoon Man-yi (Pepito), which occurred in October and November.[191]
Relation to climate change
A study by World Weather Attribution in December 2024 examined the impact of six consecutive typhoons that had affected Luzon between late October and November, including Tropical Storm Trami and Typhoons Kong-rey, Yinxing, Toraji and Usagi, Man-yi. Using statistical modeling, scientists projected that a 1.3 °C (34.3 °F) rise in sea surface temperatures would cause such an event to occur once every 15 years, with the likelihood increasing to every 12 years. They concluded that climate change has increased the probability of at least three Category 3–5 typhoons hitting the Philippines in a year.[192][193]
Public reactions to government response
Citizens on social media demanded accountability from President Bongbong Marcos, who expressed feeling "a little helpless" and admitted that the government was unprepared to provide food for stranded passengers. DSWD Secretary Rex Gatchalian stated that the ready-to-eat food boxes for people stuck in seaports during a storm will be launched in November.[194]Anakbayan criticized the Marcos administration, the Department of Environment and Natural Resources, and the provincial government of Albay for their roles in the environmentally harmful practices driven by corporate interests.[195] Congressman Miguel Luis Villafuerte was seen distributing cash to flood victims in Camarines Sur from a boat, prompting mixed reactions from the public and media. He also denied reports of being in Siargao during the storm, stating that he had returned to the province by October 21, when Bicol Region was placed in red alert status, a day before the massive flooding.[196][43]
International aid and assistance
A Lockheed C-130 Hercules aircraft from the Republic of Singapore Air Force and a Eurocopter EC725 helicopter from the Royal Malaysian Air Force arrived in the country to aid relief efforts following the storm's impact.[197] The United States Agency for International Development mobilized 50 trucks to deliver family food packs and relief items to 425,000 affected individuals in Bicol, while Australia dispatched an emergency food truck to Camarines Sur to provide hot meals to displaced people.[198] The United States government provided ₱276 million (US$5.6 million) to support the Philippine government’s response to Trami.[199][200] Brunei through its Ministry of Defence deployed Royal Brunei Armed Forces personnel using C295MW aircraft and Blackhawk helicopters to support relief efforts in the Philippines and deliver essential supplies to hard-to-reach areas.[201] The European Union has responded approved €1.5 million (US$1.77 million) in humanitarian aid to support those most affected by Trami in the Philippines.[202] The Taipei Economic and Cultural Office announced a donation of ₱150,000 (US$3,045.69) and 2,000 metric tonnes of rice to the Philippine government for those impacted by the storm.[203] The South Korean government provided aid valued at ₱30 million (US$609,137.06) through the World Food Programme to assist those affected by Trami and other recent storms, including Kong-rey, Yinxing, Toraji, and Usagi.[204]
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