Cimaron gradually intensified into a typhoon on August 21, and rapidly reached its peak intensity the next day.

The storm then hit southern Japan as a Category 1 typhoon causing major travel disruptions along with minimal structural damage.

The depression gradually intensified, with the JMA upgraded it into a tropical storm by 12:00 UTC on August 18, while located north of Chuuk.

[4] Cimaron then quickly intensified into a Category 4 typhoon as it reached its peak intensity with 1-minute sustained winds of 130 mph (210 km/h) and a barometric pressure of 950 mbar (28 inHg) at 6:00 UTC the next day, while located west of the Ogasawara Islands.

[6] Cimaron continued weakening as it turned north-northeastward, transitioning into an extratropical cyclone over the Sea of Japan at 12:00 UTC on August 24.

Cimaron then moved across southern Japan as a Category 1 typhoon bringing major travel disruptions, widespread power outages, and numerous injuries.

[9] As Cimaron dumped several inches of rainfall over the Northern Mariana Islands, a flash flood watch was put in place for Saipan, Tinian, Alamagan, Pagan, and Agrihan.

[12] Ahead of the storm, the JMA issued windstorm warnings in parts of Hyogo, Okayama, Wakayama, Tottori, Kagawa, Tokushima, Kochi, Ehime Oita, Miyazaki, and Kagoshima prefectures.

Meanwhile, strong wind warnings were put in effect for the prefectures of Osaka, Nara, Hiroshima, Yamaguchi, Shimane, Fukuoka, Nagasaki, and Saga.

[13] The British Embassy in Japan and the Japanese Ministry of Defense announced that a beach landing drill would be cancelled due to the storm.

[13] As Cimaron made landfall in Japan on August 23, a peak wind gust of 108 mph (174 km/h) was reported in Tomogashima.