At noon on December 31, a vortex was noted along the Intertropical Convergence Zone about 1,300 miles (2,100 km) south of Hawai'i. On January 7, the relatively small tropical storm struck Jaluit Atoll within the southern Marshall Islands, killing 14 people. It rapidly intensified, and reached winds of 140 miles per hour (230 km/h) the next day. Conditions became unfavorable, and steadily weakened to 105 miles per hour (169 km/h) winds. Ponape was struck on January 10, where Ophelia tore off the roof of the United States Weather Bureau office. On January 11, Truk was struck. The Weather Bureau's inflation shelter was destroyed, with other buildings on site severely damaged. On the 12th, favorable conditions allowed Ophelia to reintensify, reaching a peak of 160 miles per hour (260 km/h) on the 13th. Ophelia severely impacted Yap on January 13, removing the Weather Bureau office's sheet metal roof and damaging the inflation building, theodolite, and radio antenna. After maintaining that intensity for 18 hours, it quickly weakened as it drifted northward, and dissipated on the 17th. Typhoon Ophelia caused widespread on several islands of the Western Pacific. Ophelia also killed nine people when a USAFWB-50 crashed during a recon flight into the storm on January 15.
On May 29, Super Typhoon Phyllis attained a peak of 185 miles per hour (298 km/h), the strongest typhoon ever in the month of May. Phyllis remained over open waters, and dissipated on the 2nd to the southeast of Japan.
Typhoon Tess developed in the vicinity of the Federated States of Micronesia on June 28. The storm moved generally west-northwestward and northwestward, reaching the Ryukyu Islands before dissipating on July 6.
Tropical Storm Winnie formed on July 12 to the east of Luzon. It moved northwestward, rapidly intensifying to a Category 4 typhoon within 12 hours. The typhoon weakened slightly, but rapidly strengthened to a 175-mile-per-hour (282 km/h) super typhoon just before hitting eastern Taiwan on the 15th. Winnie rapidly weakened over the mountainous terrain, and after crossing the Formosa Strait Winnie hit southeastern China. It continued to weaken over land, and dissipated on the 17th. Winnie caused 31 casualties and 53 injuries in Taiwan while crossing.
Tropical Storm Alice developed on July 14 in the open western Pacific Ocean. It moved to the northwest and attained typhoon status on the 16th. Alice rapidly intensified on the 19th to a 150-mile-per-hour (240 km/h) super typhoon, and after turning to the northeast it weakened. Alice hit southeastern Japan on the 22nd, and became extratropical on the 24th near the Kamchatka Peninsula. Alice was responsible for 41 deaths (with 8 missing) and 61 injuries in Hokkaidō.
On August 21, a tropical depression formed in the open ocean and moved northward. It reached tropical storm status later that day, and attained typhoon strength on the 22nd. Flossie peaked at 105 miles per hour (169 km/h) on the 22nd, and weakened to a 70-mile-per-hour (110 km/h) tropical storm just before hitting the southeastern coast of Japan on the 25th. Flossie turned to the east, and after becoming extratropical on the 26th the storm dissipated on the 27th. The storm caused 15 casualties (with 30 missing) and 39 injuries in Tokyo.
Another typhoon developed in the vicinity of the Federated States of Micronesia on August 29. The system moved northwestward and eventually strengthened into a super typhoon. Grace peaked with a minimum barometric pressure of 905 mbar (26.7 inHg). It later struck Zhejiang before becoming extratropical on September 5.
Typhoon Helen, which formed on September 9, rapidly intensified to a 175-mile-per-hour (282 km/h) super typhoon on the 14th. It moved to the northeast, and steadily weakened until hitting southeastern Japan as a 105-mile-per-hour (169 km/h) typhoon on the 17th. It paralleled the Japanese coastline, and after turning northward it became extratropical on the 19th in the Sea of Okhotsk. Helen's effects caused 24 fatalities (with 44 missing) and 108 injuries.
On September 20, Tropical Storm Ida formed in the central Western Pacific. It moved to the west, rapidly strengthening to a 115-mile-per-hour (185 km/h) typhoon by the next day. On the 22nd Ida turned to the north and quickly intensified, reaching super typhoon status on the 23rd and peak winds of 200 miles per hour (320 km/h) on the 24th. Such winds are speculative, due to the lack of satellite or quality in measurements, but Ida was likely a formidable typhoon with a record low pressure (at the time) of 877 mbar. Ida weakened as it continued to the north-northeast, and made landfall on southeastern Honshū with winds of 80 miles per hour (130 km/h) on the 26th. 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 along the coastline was extensive, including two small villages that were washed away completely. Nearly 500,000 were left homeless, 888 were killed, 496 were injured, and 381 were missing from the storm.
Typhoon Kathy developed just east of the Philippines on October 21. It moved across the islands and entered the South China Sea. There, the system strengthened, and subsequently dissipated on October 27.