Champi has weakened to a post-tropical cyclone over the western North Pacific Ocean. It has long-since passed by the island of Iō Tō, popularly known as Iwo Jima, as it curls toward the northeast on its way to soon becoming post-tropical.

Storm History

Earlier, Champi first affected the Northern Mariana Islands as a tropical storm. Saipan reported sustained tropical storm-force winds for roughly four hours, along with a peak gust of 81 mph during the afternoon of Oct. 16.

The Japan Meteorological Agency upgraded Champi to a typhoon early Friday, Oct. 16, making it the 16th typhoon of 2015. The Joint Typhoon Warning Center followed suit later that day.

Champi reached its peak intensity as a super typhoon with 150-mph sustained 1-minute-average winds for a time on Sunday, Oct. 18.

Tropical storm-force winds were reported on Iwo Jima for much of the day on Thursday, Oct. 22. Gusts reached as high as 83 mph.

Iwo Jima has a Japanese military presence, but no permanent population. The only populated islands affected in Japan were the Ogasawara Islands, which are farther from the center of Champi and therefore not as directly impacted. The island of Chichijima did briefly gust to tropical storm force Wednesday evening local time.

(FORECAST: Guam) 

Some Cape Air flights were cancelled due to Champi as it moved through that region, according to the Pacific Daily News. 

MORE ON WEATHER.COM: Typhoon Dujuan Photos, September 2015