The 1965 Pacific typhoon season was an extremely active Pacific typhoon season that had no official bounds; it ran year-round in 1965, 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 scope of this article is limited to the Pacific Ocean, north of the equator and west of the International Date Line. Storms that form east of the date line and north of the equator are called hurricanes; see 1965 Pacific hurricane season. Tropical Storms formed in the entire west pacific basin were assigned a name by the Joint Typhoon Warning Center. Tropical depressions in this basin have the "W" suffix added to their number. Tropical depressions that enter or form in the Philippine area of responsibility are assigned a name by the Philippine Weather Bureau. This can often result in the same storm having two names.
The season was among the most active Pacific typhoon seasons on record. Between January and December 1965, there was a total of 44 tropical depressions, 35 tropical storms and named systems, 21 typhoons and 11 super typhoons, of which 8 became Category 5 strength on the Saffir-Simpson scale. As a result, the season featured the most super typhoons ever observed in a single year, later tied by the 1997 season.
Named storms formed in every month of 1965, a feat that wouldn't occur again until 50 years later in 2015.
Systems
The 1965 Pacific typhoon season was among the most active Pacific typhoon seasons on record. Between January and December 1965, there was a total of 44 tropical depressions, 35 tropical storms and named systems, 21 typhoons and 11 super typhoons, of which 8 became Category 5 strength on the Saffir-Simpson scale. As a result, the season featured the most super typhoons ever observed in a single year, later tied by the 1997 season. 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 1965, resulting in disparate storm counts and intensities.
Tropical Depression Atring
A low pressure system was spotted steadily approaching the Philippines on January 15. The next day, on January 16, the disturbance organized into a tropical depression receiving the name Atring via PAGASA. Shortly later, the depression peaked with winds of and pressure levels of 1003 hPa (mbar). The tropical depression collapsed back into an extratropical cyclone after a brief 12 hours and was last tracked by the agency on January 17.
Typhoon Patsy (Bining) + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 68 989 HKO 60 990 JMA 990 JTWC 65
On January 17, a short wave trough fractured off from powerful high lying westerly winds, being accompanied by a subsequent surge in the northeast wind flow. This led to a tropical disturbance being spotted by various agencies nearby Samar. The disturbance meandered in its position, before eventually tracking northward on January 19. Later that day, the disturbance eventually became a tropical storm assigned the name Patsy by the Joint Typhoon Warning Center. Continuing on its mostly northward trajectory, the tropical storm reached its peak intensity as a Category 1 typhoon on January 20, with winds of and pressure levels as low as 990 hPa (mbar). Upon reaching its peak intensity, Patsy took a sharp turn to the southwest weakening back into a tropical storm. The typhoon made landfall in Luzon as a tropical depression and collapsed into an extratropical cyclone upon crossing the island. The cyclone continued on a mostly southwest trajectory before it dissipated on January 26. The effects of the typhoon are unknown.
Tropical Storm Ruth + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 58 994 HKO 60 990 JMA 994 JTWC 60
A tropical disturbance was spotted by various agencies nearby Micronesia on January 20. Later that day, the Joint Typhoon Warning Center upgraded the disturbance to a tropical depression as it began moving northwest. On its northwest trajectory, the depression was upgraded to a tropical storm and was assigned the name Ruth, when situated south of Guam. After doing so, the storm started curving towards the west, reaching a primary peak intensity with winds of . On January 23, Ruth took a sharp turn to the northeast and slightly weakened in the process. The storm started reintensifying later that same day on its northeast movement, reaching a secondary peak intensity with winds of and pressure levels of 994 hPa. The next day, the tropical storm started to change directory closer to the east as it started weakening. Ruth later started speeding up as it moved further into the central Pacific ocean, where it collapsed into an extratropical cyclone on January 26 and dissipated shortly thereafter.
CMA Tropical Depression 4
A tropical disturbance was spotted far east of the Philippines by the China Meteorological Administration on January 24. The disturbance, moving east, was quickly designated as a tropical depression by the agency, where they observed winds of and pressure levels of 1002 hPa (mbar). 12 hours after the depression reached its peak intensity, it collapsed back into an extratropical cyclone and steered to the right, eventually doing a 180° turn westward. It continued on its westward trajectory before it eventually fully dissipated on January 26.
Tropical Storm Sarah + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 38 1002 HKO 40 1002 JMA 1002 JTWC 45
A tropical disturbance was located by various agencies in the South China Sea on February 14. On a steady and predictable westward trajectory, the disturbance was upgraded to a tropical depression later that day. On February 15, the depression was upgraded to a tropical storm and was promptly assigned the name Sarah by the Joint Typhoon Warning Center. Later that same day, the storm reached its peak intensity, with 1 minute sustained winds of and pressure levels of 1002 hPa. The tropical storm started turning gradually and slowly towards the northwest, coming in close proximity with southern Vietnam on February 16. Sarah held its tropical storm strength until February 17, where it collapsed into a tropical depression, sharply turned east, collapsed into an extratropical cyclone and dissipated shortly later. Despite the storm's close proximity to Vietnam, no damages or impacts were reported.
Tropical Storm Thelma (Kuring) + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 29 1000 HKO 30 1002 JTWC 40
A low pressure system was spotted southeast, moving away from Guam on February 15. The system stayed weak for the few coming days, where it initially started on a southwest trajectory and started moving more westward on February 16. On February 17, the low came in close proximity to Palau and shortly later, the system was upgraded to a tropical depression by the Joint Typhoon Warning Center. On February 18, the depression was promptly upgraded to a tropical storm, receiving the name Thelma. Later that day on its westward trajectory, slightly heading north, the storm reached its peak intensity with 1 minute sustained winds of and pressure levels of 1000 hPa. Shortly after reaching its peak, Thelma collapsed into a tropical depression and dissipated shortly thereafter. Overall, no damages were reported.
Tropical Storm Vera (Daling) + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 38 1004 HKO 40 1004 JMA 1004 JTWC 40
A low pressure system was spotted by various agencies approaching the Philippines on March 6. A brief 6 hours before being first identified, the depression was upgraded to a tropical storm and assigned the name Vera by the Joint Typhoon Warning Center. That same day, the storm reached its peak intensity with winds of and pressure levels of 1004 hPa. Simultaneously, the storm made landfall in the Philippine island of Samar as a tropical storm. Upon landfall, the system collapsed into a tropical depression, later an extratropical cyclone and shortly after, dissipated over the Philippines. Despite its short duration and landfall, damages to any region is unknown.
Typhoon Wanda + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 38 1004 HKO 40 997 JMA 996 JTWC 65
On April 11, an area of mass divergence at 200 hPa was located, being fed inflow from the Southern Hemisphere at low and mid altitudes. As a result, a low pressure system was promptly identified when situated around Micronesia. A brief 18 hours later, that same day, the system was officially classified as a tropical depression by the Joint Typhoon Warning Center, officially noted to drift towards the northwest when doing so. On April 12, after moving mostly west and slightly southward, the depression was upgraded to a tropical storm, promptly receiving the name Wanda. The storm gradually moved to the west on its approach towards the Philippines and it started producing slight northward momentum, as it slowly intensified. On April 14, the typhoon reached its peak intensity with winds of and pressure levels of 996 hPa. Quickly after doing so, the typhoon rapidly weakened, collapsing into a tropical storm, and eventually an extratropical cyclone in just 18 hours. The storm moved NNW, then turned to the SW on April 16 and dissipated later that day as it moved over a mid level anticyclonic flow.
Typhoon Amy (Elang) + Peak intensity estimates Agency Wind(kt) Pressure(hPa) CMA 97 976 HKO 90 975 JMA 976 JTWC 100
On May 20, a low pressure system was spotted hovering north of Palau. Because of low-to-mid inflow originating from the Southern Hemisphere, this allowed the formation of a tropical depression, promptly classified by the Joint Typhoon Warning Center on May 21. On May 22, the depression was upgraded to a tropical storm, receiving the name Amy. The gradually intensifying system moved somewhat erratically to the northwest when just east of the Philippines, turning to the north on May 23 and then back mostly west later that day. On May 24, near the island of Luzon, Amy took a sharp turn towards the north, later adjusting to move towards the northeast. Early on May 25, the storm was promptly upgraded to a Category 1 typhoon as it started accelerating and deepening. Ultimately, the typhoon began a phase of rapid intensification, where it reached its peak intensity on May 26, with winds of and pressure levels of 976 hPa. Additionally, it was noted that the typhoon, despite being intense, was compact, shallow and very fast moving at this stage. Briefly afterwards, the typhoon began to weaken, where it made a notable landfall near Tokyo as a Category 1 typhoon on May 27. Later that day, the typhoon collapsed into an extratropical cyclone, meandered in an eastward manner in the northern Pacific Ocean and dissipated on May 29.
Tropical Depression 08W
A tropical depression was spotted by the Joint Typhoon Warning Center on May 29, designating it 08W. During its existence, the agency estimated the depression had winds of and pressure levels of approximately 1003 hPa. The next day, just 24 hours since it was first located, the depression quickly collapsed and dissipated.
Typhoon Babe Babe made landfall in China and Taiwan.
Typhoon Carla (Goring) Carla formed with Babe. Carla rapidly intensified on June 1 but then rapidly weakened and then moved northeastward then dissipated on June 3.
CMA Tropical Depression 12