The incipient disturbance that became Super Typhoon Kit was first identified on June 20 near Chuuk State in the Federated States of Micronesia.
The JMA designated that system as a tropical depression that day as the system moved steadily westward.
The JTWC followed suit with this classification on June 22 following an investigation by reconnaissance.
Early the next day, the depression acquired gale-force winds and was dubbed Tropical Storm Kit.
Turning to the northwest, Kit developed a 35–55 km (20–35 mi) wide eye and reached typhoon status late on June 23.
Rapid intensification ensued late on June 24 into June 25; Kit's central pressure dropped 51 mbar (hPa; 1.51 inHg) in 18 hours from 965 mbar (hPa; 28.50 inHg) to 914 mbar (hPa; 26.99 inHg).
During this time, Kit's eye contracted to 13 to 17 km (8.1 to 10.6 mi).

At 06:00 UTC on June 26, the JMA estimated Kit's pressure to have abruptly dropped to 880 mbar (hPa; 25.99 inHg), which would rank it among the top ten most intense tropical cyclones on record.
Around this time, the JTWC estimated Kit to have attained peak winds of 315 km/h (195 mph); however, these winds are likely an overestimate.
A later reconnaissance mission on June 26 reported a pressure of 912 mbar (hPa; 26.93 inHg), the lowest observed in relation to the typhoon.
Weakening ensued thereafter as the system accelerated to the north-northeast.
Retaining typhoon strength, Kit brushed southeastern Honshu, Japan, on June 28, passing roughly 155 km (100 mi) east of Tokyo.
The system subsequently weakened to a tropical storm and transitioned into an extratropical cyclone south of Hokkaido on June 29.
The National Oceanic and Atmospheric Administration reported the remnants of Kit to have dissipated the following day near northeastern Hokkaido.
However, the JMA states that the system turned eastward and accelerated over the north Pacific before losing its identity on July 3 near the International Dateline.
The incipient disturbance that became Super Typhoon Kit was first identified on June 20 near Chuuk State in the Federated States of Micronesia. The JMA designated that system as a tropical depression that day as the system moved steadily westward. The JTWC followed suit with this classification on June 22 following an investigation by reconnaissance. Early the next day, the depression acquired gale-force winds and was dubbed Tropical Storm Kit. Turning to the northwest, Kit developed a 35–55 km (20–35 mi) wide eye and reached typhoon status late on June 23. Rapid intensification ensued late on June 24 into June 25; Kit's central pressure dropped 51 mbar (hPa; 1.51 inHg) in 18 hours from 965 mbar (hPa; 28.50 inHg) to 914 mbar (hPa; 26.99 inHg). During this time, Kit's eye contracted to 13 to 17 km (8.1 to 10.6 mi). 
At 06:00 UTC on June 26, the JMA estimated Kit's pressure to have abruptly dropped to 880 mbar (hPa; 25.99 inHg), which would rank it among the top ten most intense tropical cyclones on record. Around this time, the JTWC estimated Kit to have attained peak winds of 315 km/h (195 mph); however, these winds are likely an overestimate. A later reconnaissance mission on June 26 reported a pressure of 912 mbar (hPa; 26.93 inHg), the lowest observed in relation to the typhoon. Weakening ensued thereafter as the system accelerated to the north-northeast. Retaining typhoon strength, Kit brushed southeastern Honshu, Japan, on June 28, passing roughly 155 km (100 mi) east of Tokyo. The system subsequently weakened to a tropical storm and transitioned into an extratropical cyclone south of Hokkaido on June 29. The National Oceanic and Atmospheric Administration reported the remnants of Kit to have dissipated the following day near northeastern Hokkaido. However, the JMA states that the system turned eastward and accelerated over the north Pacific before losing its identity on July 3 near the International Dateline.
Typhoon Kit (1966)