|Typhoon (JMA scale)|
|Category 5 super typhoon (SSHWS)|
|Formed||October 4, 1979|
|Dissipated||October 24, 1979|
|( Extratropical after October 19)|
|Highest winds|| 10-minute sustained:260 km/h (160 mph)|
1-minute sustained:305 km/h (190 mph)
|Lowest pressure||870 hPa (mbar); 25.69 inHg |
(Worldwide record low)
|Areas affected||Caroline Islands, Philippines, Korean Peninsula, Japan, Northeast China, Russian Far East, Alaska|
|Part of the 1979 Pacific typhoon season|
Typhoon Tip, known in the Philippines as Typhoon Warling, was the largest and most intense tropical cyclone ever recorded. The forty-third tropical depression, nineteenth tropical storm, and twelfth typhoon of the 1979 Pacific typhoon season, Tip developed out of a disturbance within the monsoon trough on October 4 near Pohnpei. Initially, a tropical storm to the northwest hindered the development and motion of Tip, though after the storm tracked farther north, Tip was able to intensify. After passing Guam, Tip rapidly intensified and reached peak sustained winds of 305 km/h (190 mph) and a worldwide record-low sea-level pressure of 870 mbar (870.0 hPa ; 25.69 inHg ) on October 12. At its peak strength, Tip was the largest tropical cyclone on record, with a wind diameter of 2,220 km (1,380 mi). Tip slowly weakened as it continued west-northwestward and later turned to the northeast, in response to an approaching trough. The typhoon made landfall in southern Japan on October 19, and became an extratropical cyclone shortly thereafter. Typhoon Tip's extratropical remnants continued moving east-northeastward, until they dissipated near the Aleutian Islands on October 24.
A tropical cyclone is a rapidly rotating storm system characterized by a low-pressure center, a closed low-level atmospheric circulation, strong winds, and a spiral arrangement of thunderstorms that produce heavy rain. Depending on its location and strength, a tropical cyclone is referred to by different names, including hurricane, typhoon, tropical storm, cyclonic storm, tropical depression, and simply cyclone. A hurricane is a tropical cyclone that occurs in the Atlantic Ocean and northeastern Pacific Ocean, and a typhoon occurs in the northwestern Pacific Ocean; in the south Pacific or Indian Ocean, comparable storms are referred to simply as "tropical cyclones" or "severe cyclonic storms".
The 1979 Pacific typhoon season featured the most intense tropical cyclone recorded globally, Typhoon Tip. The season also experienced above-average tropical cyclone activity. The season had no official bounds; it ran year-round in 1979, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The monsoon trough is a portion of the Intertropical Convergence Zone in the Western Pacific, as depicted by a line on a weather map showing the locations of minimum sea level pressure, and as such, is a convergence zone between the wind patterns of the southern and northern hemispheres.
U.S. Air Force aircraft flew 60 weather reconnaissance missions into the typhoon, making Tip one of the most closely observed tropical cyclones. Rainfall from Tip indirectly led to a fire that killed 13 Marines and injured 68 at Combined Arms Training Center, Camp Fuji in the Shizuoka Prefecture of Japan. Elsewhere in the country, the typhoon caused widespread flooding and 42 deaths; offshore shipwrecks left 44 people killed or missing.
Weather reconnaissance is the acquisition of weather data used for research and planning. Typically the term reconnaissance refers to observing weather from the air, as opposed to the ground.
The United States Marine Corps (USMC), also referred to as the United States Marines or U.S. Marines, is a branch of the United States Armed Forces responsible for conducting expeditionary and amphibious operations with the United States Navy as well as the Army and Air Force. The U.S. Marine Corps is one of the four armed service branches in the U.S. Department of Defense (DoD) and one of the seven uniformed services of the United States.
Combined Arms Training Center (CATC) Camp Fuji is an installation of the United States Marine Corps next to the JGSDF Camp Takigahara. It is located near the town of Gotemba in the Shizuoka Prefecture of Japan, at the base of Mount Fuji. Camp Fuji is one of several Camps of the Marine Corps Base Camp Butler complex.
At the end of September 1979, three circulations developed within the monsoon trough that extended from the Philippines to the Marshall Islands. The westernmost disturbance developed into a tropical depression on October 1, to the west of Luzon, which would later become Typhoon Sarah on October 7. On October 3, the disturbance southwest of Guam developed into Tropical Storm Roger, and later on the same day, a third tropical disturbance that would later become Typhoon Tip formed south of Pohnpei. Strong flow from across the equator was drawn into Roger's wind circulation, initially preventing significant development of the precursor disturbance to Tip. Despite the unfavorable air pattern, the tropical disturbance gradually organized as it moved westward. Due to the large-scale circulation pattern of Tropical Storm Roger, Tip's precursor moved erratically and slowly executed a cyclonic loop to the southeast of Chuuk. A reconnaissance aircraft flight into the system late on October 4 confirmed the existence of a closed low-level circulation, and early on October 5, the Joint Typhoon Warning Center (JTWC) issued its first warning on Tropical Depression Twenty-Three-W.
The Philippines, officially the Republic of the Philippines, is an archipelagic country in Southeast Asia. Situated in the western Pacific Ocean, it consists of about 7,641 islands that are categorized broadly under three main geographical divisions from north to south: Luzon, Visayas, and Mindanao. The capital city of the Philippines is Manila and the most populous city is Quezon City, both part of Metro Manila. Bounded by the South China Sea on the west, the Philippine Sea on the east and the Celebes Sea on the southwest, the Philippines shares maritime borders with Taiwan to the north, Vietnam to the west, Palau to the east, and Malaysia and Indonesia to the south.
The Marshall Islands, officially the Republic of the Marshall Islands, is an island country and a United States associated state near the equator in the Pacific Ocean, slightly west of the International Date Line. Geographically, the country is part of the larger island group of Micronesia. The country's population of 53,158 people is spread out over 29 coral atolls, comprising 1,156 individual islands and islets.
Luzon is the largest and most populous island in the Philippines. It is ranked 15th largest in the world by land area. Located in the northern region of the archipelago, it is the economic and political center of the nation, being home to the country's capital city, Manila, as well as Quezon City, the country's most populous city. With a population of 53 million as of 2015,, it is the fourth most populous island in the world containing 52.5% of the country's total population.
While executing a loop near Chuuk, the tropical depression intensified into Tropical Storm Tip, though the storm failed to organize significantly due to the influence of Tropical Storm Roger. Reconnaissance aircraft provided the track of the surface circulation, since satellite imagery estimated the center was about 60 km (37 mi) from its true position. After drifting erratically for several days, Tip began a steady northwest motion on October 8. By that time, Tropical Storm Roger had become an extratropical cyclone, resulting in the southerly flow to be entrained into Tip. An area of a tropical upper tropospheric trough moved north of Guam at the time, providing an excellent outflow channel north of Tip. Initially, Tip was predicted to continue northwestward and make landfall on Guam, though instead, it turned to the west early on October 9, passing about 45 km (28 mi) south of Guam. Later that day, Tip intensified to attain typhoon status.
Extratropical cyclones, sometimes called mid-latitude cyclones or wave cyclones, are low-pressure areas which, along with the anticyclones of high-pressure areas, drive the weather over much of the Earth. Extratropical cyclones are capable of producing anything from cloudiness and mild showers to heavy gales, thunderstorms, blizzards, and tornadoes. These types of cyclones are defined as large scale (synoptic) low pressure weather systems that occur in the middle latitudes of the Earth. In contrast with tropical cyclones, extratropical cyclones produce rapid changes in temperature and dew point along broad lines, called weather fronts, about the center of the cyclone.
A tropical upper tropospheric trough (TUTT), also known as the mid-oceanic trough,or commonly called as Western Hemisphere or "upper cold low" is a trough situated in upper-level tropics. Its formation is usually caused by the intrusion of energy and wind from the mid-latitudes into the tropics. It can also develop from the inverted trough adjacent to an upper level anticyclone. TUTTs are different from mid-latitude troughs in the sense that they are maintained by subsidence warming near the tropopause which balances radiational cooling. When strong, they can present a significant vertical wind shear to the tropics and subdue tropical cyclogenesis. When upper cold lows break off from their base, they tend to retrograde and force the development, or enhance, surface troughs and tropical waves to their east. Under special circumstances, they can induce thunderstorm activity and lead to the formation of tropical cyclones.
Outflow, in meteorology, is air that flows outwards from a storm system. It is associated with ridging, or anticyclonic flow. In the low levels of the troposphere, outflow radiates from thunderstorms in the form of a wedge of rain-cooled air, which is visible as a thin rope-like cloud on weather satellite imagery or a fine line on weather radar imagery. Low-level outflow boundaries can disrupt the center of small tropical cyclones. However, outflow aloft is essential for the strengthening of a tropical cyclone. If this outflow is undercut, the tropical cyclone weakens. If two tropical cyclones are in proximity, the upper level outflow from the system to the west can limit the development of the system to the east.
Owing to very favorable conditions for development, Typhoon Tip rapidly intensified over the open waters of the western Pacific Ocean. Late on October 10, Tip attained wind speeds equal to Category 4 strength on the Saffir–Simpson Hurricane Scale, and it became a super typhoon on the next day. The central pressure dropped by 92 mbar (92.0 hPa; 2.72 inHg) from October 9 to 11, during which the circulation pattern of Typhoon Tip expanded to a record diameter of 2,220 km (1,380 mi). Tip continued to intensify further, and early on October 12, reconnaissance aircraft recorded a worldwide record-low pressure of 870 mbar (870.0 hPa; 25.69 inHg) with winds of 305 km/h (190 mph), when Tip was located about 840 km (520 mi) west-northwest of Guam. In its best track, the Japan Meteorological Agency listed Tip as peaking with 10-minute sustained winds of 160 mph (260 km/h). At the time of its peak strength, its eye was 15 km (9.3 mi) wide. Tip crossed the 135th meridian east on the afternoon of October 13, prompting the PAGASA to issue warnings on Typhoon Tip, assigning it the local name Warling.
The Pacific Ocean is the largest and deepest of Earth's oceanic divisions. It extends from the Arctic Ocean in the north to the Southern Ocean in the south and is bounded by Asia and Australia in the west and the Americas in the east.
Tropical cyclones are unofficially ranked on one of five tropical cyclone intensity scales, according to their maximum sustained winds and which tropical cyclone basin(s) they are located in. Only a few scales of classifications are used officially by the meteorological agencies monitoring the tropical cyclones, but some alternative scales also exist, such as accumulated cyclone energy, the Power Dissipation Index, the Integrated Kinetic Energy Index, and the Hurricane Severity Index.
Atmospheric pressure, sometimes also called barometric pressure, is the pressure within the atmosphere of Earth. The standard atmosphere is a unit of pressure defined as 1013.25 mbar (101325 Pa), equivalent to 760 mmHg (torr), 29.9212 inches Hg, or 14.696 psi. The atm unit is roughly equivalent to the mean sea-level atmospheric pressure on Earth, that is, the Earth's atmospheric pressure at sea level is approximately 1 atm.
After peaking in intensity, Tip weakened to 230 km/h (140 mph) and remained at that intensity for several days, as it continued west-northwestward. For five days after its peak strength, the average radius of winds stronger than 55 km/h (34 mph) extended over 1,100 km (684 mi). On October 17, Tip began to weaken steadily and decrease in size, recurving northeastward under the influence of a mid-level trough the next day. After passing about 65 km (40 mi) east of Okinawa, the typhoon accelerated to 75 km/h (47 mph). Tip made landfall on the Japanese island of Honshū with winds of about 130 km/h (81 mph) on October 19. It continued rapidly northeastward through the country and became an extratropical cyclone over northern Honshū a few hours after moving ashore. The extratropical remnant of Tip proceeded east-northeastward and gradually weakened, crossing the International Date Line on October 22. The storm was last observed near the Aleutian Islands of Alaska on October 24.
A trough is an elongated (extended) region of relatively low atmospheric pressure, often associated with fronts. Troughs may be at the surface, or aloft, or both under various conditions. Most troughs bring clouds, showers, and a wind shift, particularly following the passage of the trough. This results from convergence or "squeezing" which forces lifting of moist air behind the trough line.
Honshu is the largest and most populous island of Japan, located south of Hokkaido across the Tsugaru Strait, north of Shikoku across the Inland Sea, and northeast of Kyushu across the Kanmon Straits. The island separates the Sea of Japan, which lies to its north and west, from the North Pacific Ocean to its south and east. It is the seventh-largest island in the world, and the second-most populous after the Indonesian island of Java.
The International Date Line (IDL) is an imaginary line of demarcation on the surface of Earth that runs from the North Pole to the South Pole and demarcates the change of one calendar day to the next. It passes through the middle of the Pacific Ocean, roughly following the 180° line of longitude but deviating to pass around some territories and island groups.
|Source:JMA Typhoon Best Track Analysis|
Information for the North Western Pacific Ocean.
The typhoon produced heavy rainfall early in its lifetime while passing near Guam, including a total of 23.1 cm (9.09 in) at Andersen Air Force Base. The outer rainbands of the large circulation of Tip produced moderate rainfall in the mountainous regions of the Philippine islands of Luzon and Visayas.
Heavy rainfall from the typhoon breached a flood-retaining wall at Camp Fuji, a training facility for the United States Marine Corps near Yokosuka.Marines inside the camp weathered the storm inside huts situated at the base of a hill which housed a fuel farm. The breach led to hoses being dislodged from two rubber storage bladders, releasing large quantities of fuel. The fuel flowed down the hill and was ignited by a heater used to warm one of the huts. The resultant fire killed 13 Marines, injured 68, and caused moderate damage to the facility. The facility's barracks were destroyed, along with fifteen huts and several other structures. The barracks were rebuilt, and a memorial was established for those who lost their lives in the fire.
During recurvature, Typhoon Tip passed about 65 km (40 mi) east of Okinawa. Sustained winds reached 72 km/h (44 mph), with gusts to 112 km/h (69 mph). Sustained wind velocities in Japan are not known, though they were estimated at minimal typhoon strength. The passage of the typhoon through the region resulted in millions of dollars in damage to the agricultural and fishing industries of the country. Eight ships were grounded or sunk by Tip, leaving 44 fishermen dead or unaccounted for. A Chinese freighter broke in half as a result of the typhoon, though its crew of 46 were rescued. The rainfall led to over 600 mudslides throughout the mountainous regions of Japan and flooded more than 22,000 homes; 42 people died throughout the country, with another 71 missing and 283 injured. River embankments broke in 70 places, destroying 27 bridges, while about 105 dikes were destroyed. Following the storm, at least 11,000 people were left homeless. Tip destroyed apple, rice, peach and other crops. Five ships sank in heavy seas off the coast and 50-story buildings swayed in the capital, Tokyo. Transportation in the country was disrupted; 200 trains and 160 domestic flights were canceled. Tip was described as the most severe storm to strike Japan in 13 years.
Typhoon Tip was the largest tropical cyclone on record, with a diameter of 1,380 mi (2,220 km)—almost double the previous record of 700 mi (1,130 km) set by Typhoon Marge in August 1951. At its largest, Tip was nearly half the size of the contiguous United States. The temperature inside the eye of Typhoon Tip at peak intensity was 30 °C (86 °F ) and described as exceptionally high. With 10-minute sustained winds of 160 mph (260 km/h), Typhoon Tip is the strongest cyclone in the complete tropical cyclone listing by the Japan Meteorological Agency.
The typhoon was also the most intense tropical cyclone on record, with a pressure of 870 mbar (25.69 inHg), 6 mbar (0.18 inHg) lower than the previous record set by Super Typhoon June in 1975. The records set by Tip still technically stand, though with the end of routine reconnaissance aircraft flights in the western Pacific Ocean in August 1987, modern researchers have questioned whether Tip indeed remains the strongest. After a detailed study, three researchers determined that two typhoons, Angela in 1995 and Gay in 1992, registered higher Dvorak numbers than Tip, and concluded that one or both of the two may have therefore been more intense. Other recent storms may have also been more intense than Tip at its peak; for instance, satellite-derived intensity estimates for Typhoon Haiyan of 2013 indicated that its core pressure may have been as low as 858 mbar (25.34 inHg). Due to the dearth of direct observations and Hurricane hunters into these cyclones, conclusive data is lacking.
Despite the typhoon's intensity and damage, the name Tip was not retired and was reused in 1983, 1986, and 1989.
The 1929 Atlantic hurricane season was among the least active hurricane seasons in the Atlantic on record – featuring only five tropical cyclones. Of these five tropical systems, three of them intensified into a hurricane, with one strengthening further into a major hurricane. The first tropical cyclone of the season developed in the Gulf of Mexico on June 27. Becoming a hurricane on June 28, the storm struck Texas, bringing strong winds to a large area. Three fatalities were reported, while damage was conservatively estimated at $675,000 (1929 USD).
The 1992 Pacific typhoon season had no official bounds; it ran year-round in 1992. Despite this, most tropical cyclones tend to form in the northwestern Pacific Ocean between May and November. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The 1961 Pacific typhoon season had no official bounds; it ran year-round in 1961, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The 1957 Pacific typhoon season has no official bounds; it ran year-round in 1957, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The 1963 Pacific typhoon season has no official bounds; it ran year-round in 1963, but most tropical cyclones tend to form in the northwestern Pacific Ocean between June and December. These dates conventionally delimit the period of each year when most tropical cyclones form in the northwestern Pacific Ocean.
The 1951 Pacific typhoon season was a generally below average season with multiple tropical cyclones striking the Philippines. With the exception of January, each month saw at least one tropical system develop; October was the most active month with four tropical cyclones forming. Overall, there were 21 tropical depressions, of which 17 became named storms; of those, there were 16 typhoons.
Typhoon Roy, known in the Philippines as Typhoon Asiang, was the second-most intense January tropical cyclone on record in the Western Pacific basin. Forming out of an area of disturbed weather on January 7, 1988, Roy quickly intensified as it moved through the Marshall Islands. By January 9, the storm intensified into a typhoon and attained its peak intensity the following day. At its peak, sustained winds reached 215 km/h (135 mph). Slight weakening took place before the storm moved through the Mariana Islands. Continuing westward, the system eventually struck the Philippines as a minimal typhoon before dissipating over the South China Sea on January 19.
Typhoon Keith was the tenth of a record eleven super typhoons to develop during the unusually intense 1997 Pacific typhoon season. Originating from a near-equatorial trough on October 26, the precursor depression to Keith slowly organized into a tropical storm. After two days of gradual strengthening, the storm underwent a period of rapid intensification on October 30 as winds increased to 195 km/h (120 mph). On November 1, the storm further intensified into a super typhoon and later attained peak winds of 285 km/h (180 mph). The following day, the powerful storm passed between Rota and Tinian in the Northern Mariana Islands. After fluctuating in strength over the following few days, a steady weakening trend established itself by November 5 as the typhoon accelerated towards the northeast. On October 8, Keith transitioned into an extratropical cyclone and was last noted early the following day near the International Dateline.
Typhoon Ida, also known as the Kanogawa Typhoon, was the sixth-deadliest typhoon to hit Japan, as well as one of the strongest tropical cyclones on record. On September 20, Ida formed in the Western Pacific near Guam. It moved to the west and rapidly intensified into a 115 mph (185 km/h) typhoon by the next day. On September 22, Ida turned to the north and continued its quick rate of intensification. Two days later, the Hurricane Hunters observed a minimum barometric pressure of 877 mb (25.9 inHg), as well as estimated peak winds of 325 km/h (200 mph). This made Ida the strongest tropical cyclone on record at the time, although it was surpassed by Typhoon June 17 years later. Ida weakened as it continued to the north-northeast, and made landfall in Japan on southeastern Honshū with winds of 80 mph on September 26. It became extratropical the next day, and dissipated on the 28th to the east of the country. Ida caused torrential flooding to southeastern Japan, resulting in over 1,900 mudslides. Damage was estimated at $50 million, and there were 1,269 fatalities.
Typhoon Forrest, known in the Philippines as Typhoon Ising, was the third-most intense typhoon on record, behind Typhoon Tip of 1979 and Typhoon June of 1975. Forrest was also the fastest-intensifying tropical cyclone on record, with its minimum barometric pressure dropping from 976 millibars to 876 millibars—a drop of 100 millibars—from September 22 to September 23, less than a day. Forrest affected Japan in September 1983 and formed from a tropical disturbance far from land in the western Pacific Ocean. On September 20, the system was classified as a tropical storm, and thereafter began to intensify. The next day, Forrest reached typhoon status, and the intensification process accelerated. The storm prudently strengthened on September 22, and the following morning, attained peak intensity following a pressure drop of 100 mbar (3.0 inHg) in slightly less than 24 hours. Thereafter, Forrest began to weaken slowly as it moved northwest. Approaching Japan, Super Typhoon Forrest first hit Okinawa on September 27. Nearby, a tornado hit Inza Island, destroying 26 homes and injuring 26 people. Forrest then moved north, impaling the Japanese archipelago before transitioning into an extratropical cyclone on September 28. The torrential rainfall caused by the typhoon triggered deadly landslides and flooding across Japan. In all, the typhoon killed at least 21 people, left 17 listed as missing, and injured 86. Forrest flooded 46,000 homes in muddy water, over 100 dwellings were destroyed, and 2,560 people were rendered as homeless. Seven flights were called off and 27,000 people were stranded. In addition, 67 bridges and 818 roads were damaged.
Hurricane Uleki, also referred as Typhoon Uleki, was a long-lived tropical cyclone in August–September 1988 that had minimal effects on land. Originating from a disturbance in the Intertropical Convergence Zone in late-August, Uleki was identified as a tropical depression well to the southeast of Hawaii on August 28. Steady organization ensued as it moved west, becoming a tropical storm on August 30 and a hurricane on August 31. Rapid intensification took place thereafter and the storm reached its peak intensity on September 2 as a Category 3 on the Saffir–Simpson hurricane wind scale. Hurricane Hunters investigating the cyclone found peak winds of 125 mph (205 km/h) and a barometric pressure of 957 mbar. Thereafter, Uleki stalled for two days to the southwest of Hawaii, resulting in heavy surf across the state. The dangerous swells killed two people on Oahu.
The 1953 Pacific hurricane season was the least active season on record. The season officially began on May 15 in the northeast Pacific Ocean and on June 1 in the central northern Pacific. They ended on November 30. These dates conventionally delimit the time of year when most tropical cyclones form in northeast Pacific Ocean. Before the satellite age started in the 1960s, data prior to that time on Pacific hurricanes is extremely unreliable as most east Pacific storms are of no threat to land.
Super Typhoon Rita, known in the Philippines as Typhoon Kading, was the most powerful tropical cyclone during the 1978 Pacific typhoon season and one of the most intense tropical cyclones on record. A long-lived and destructive tropical cyclone, Rita began its journey east of the Marshall Islands and rapidly moved westwards, becoming a typhoon on October 20. Rita continued rapid intensification and attained super typhoon status and later an atmospheric pressure of 878 mbar (25.9 inHg) on October 25. Rita struck the Philippines overnight on October 26 and entered the South China Sea as a minimal typhoon. Rita caused extreme damage and more than 300 deaths.
Typhoon Ken, known in the Philippines as Typhoon Tering, was the fourth typhoon to strike Japan during the 1982 Pacific typhoon season. Forming along the western end of the monsoon trough in the Philippine Sea, the system had organized into a tropical depression on September 16, and by that night a tropical storm. As a compact system, rapid intensification continued, with Ken becoming a typhoon on the evening of September 17 and a major typhoon on September 18. The cyclone up to this point had a history of progressing slowly west-northwest, but Ken eventually stalled on September 20 and became a larger cyclone. As a mid-latitude trough to its north deepened, Ken took off to the northeast towards Okinawa. Ken made landfall upon Shikoku early on September 25, and moved onward into the Sea of Japan where it evolved into an extratropical cyclone. Five people were killed while 18 others were hurt. A total of 114 mudslides were reported, resulted in over 2,000 homes flooded. Additionally, 12 homes were damaged or destroyed. Seventy-four flights were cancelled as well.
Typhoon Haiyan's meteorological history began with its origins as a tropical disturbance east-southeast of Pohnpei and lasted until its degeneration as a tropical cyclone over Southern China. The thirteenth typhoon of the 2013 Pacific typhoon season, Haiyan originated from an area of low pressure several hundred kilometers east-southeast of Pohnpei in the Federated States of Micronesia on November 2. Tracking generally westward, environmental conditions favored tropical cyclogenesis and the system developed into a tropical depression the following day. After becoming a tropical storm and attaining the name Haiyan at 0000 UTC on November 4, the system began a period of rapid intensification that brought it to typhoon intensity by 1800 UTC on November 5. By November 6, the Joint Typhoon Warning Center (JTWC) assessed the system as a Category 5-equivalent super typhoon on the Saffir-Simpson hurricane wind scale; the storm passed over the island of Kayangel in Palau shortly after attaining this strength.
Typhoon Kim, known in the Philippines as Typhoon Osang, was the second typhoon in a week to directly affect the Philippines during July 1980. Like Typhoon Joe, Kim formed from the near equatorial monsoon trough in the northwestern Pacific Ocean on July 19. The disturbance tracked quickly westward-northwest underneath a subtropical ridge, reaching tropical storm strength on the July 21 and typhoon strength on July 23. After developing an eye, Kim began to rapidly intensify, and during the afternoon of July 24, peaked in intensity as a super typhoon. Several hours later, Kim made landfall over the Philippines, but the storm had weakened considerably by this time. Throughout the Philippines, 40 people were killed, 2 via drownings, and 19,000 others were directly affected. A total of 12,000 homes were destroyed and 5,000 villages were flooded. Less than a week earlier, the same areas were affected by Joe; however, Kim was considered the more damaging of the two typhoons. Land interaction took its toll on Kim, and upon entering the South China Sea, the storm was down below typhoon intensity. Kim continued northwestward but its disrupted circulation prevented re-intensification, and it remained a tropical storm until hitting southern China July 27 to the northeast of Hong Kong, where only slight damage was reported. Later that day, Kim dissipated.
Typhoon Sarah was among the deadliest typhoons on record in the western Pacific Ocean, killing around 2,000 people. It formed during the peak of the busy 1959 Pacific typhoon season near Guam, and moved generally to the west-northwest. Continued observations from the Hurricane Hunters allowed the Joint Typhoon Warning Center (JTWC) to track Sarah from its origins to its peak as a powerful typhoon, with maximum sustained winds estimated at 305 km/h (190 mph) on September 15. Shortly thereafter, the typhoon struck the small Japanese island of Miyako-jima, where the barometric pressure fell to 908.1 mbar (26.82 inHg), the second-lowest on record for the country. Sarah turned to the north and northeast, weakening from its peak intensity. On September 17, the typhoon made landfall just west of Busan, South Korea with winds of 185 km/h (115 mph), the nation's strongest landfall at the time and only to be surpassed by Typhoon Maemi in 2003. Sarah later became extratropical over the Japanese island of Hokkaido on September 18, although the remnants persisted for several days, crossing into the Russian Far East and later dissipating on September 23.
Hurricane Patricia was the most intense tropical cyclone ever recorded in the Western Hemisphere and the second-most intense worldwide in terms of barometric pressure. It also featured the highest one-minute maximum sustained winds ever recorded in a tropical cyclone. Originating from a sprawling disturbance near the Gulf of Tehuantepec in mid-October 2015, Patricia was first classified a tropical depression on October 20. Initial development was slow, with only modest strengthening within the first day of its classification. The system later became a tropical storm and was named Patricia, the twenty-fourth named storm of the annual hurricane season. Exceptionally favorable environmental conditions fueled explosive intensification on October 22. A well-defined eye developed within an intense central dense overcast and Patricia grew from a tropical storm to a Category 5 hurricane in just 24 hours—a near-record pace. The magnitude of intensification was poorly forecast and both forecast models and meteorologists suffered from record-high prediction errors.
Typhoon Lan, known in the Philippines as Typhoon Paolo, was the third-most intense tropical cyclone worldwide in 2017. A very large storm, Lan was the twenty-first tropical storm and ninth typhoon of the annual typhoon season. It originated from a tropical disturbance that the United States Naval Research Laboratory had begun tracking near Chuuk on October 11. Slowly consolidating, it developed into a tropical storm on October 15, and intensified into a typhoon on October 17. It expanded in size and turned northward on October 18, although the typhoon struggled to intensify for two days. On October 20, Lan grew into a very large typhoon and rapidly intensified, due to favorable conditions, with a large well-defined eye, reaching peak intensity as a "super typhoon" with 1-minute sustained winds of 250 km/h (155 mph) – a high-end Category 4-equivalent storm – late on the same day. Afterwards, encroaching dry air and shear caused the cyclone to begin weakening and turn extratropical, before it struck Japan on October 23 as a weaker typhoon. Later that day, it became fully extratropical before it was absorbed by a larger storm shortly afterwards.