Typhoon Mitag impacted Taiwan and Japan's southernmost Ryukyu Islands with high winds and heavy rain, then brushed by eastern China before heading toward South Korea.

According to from Taiwan's Central Weather Bureau, the center of Typhoon Mitag passed just east of Taiwan, raking through Japan's southernmost Ryukyu Islands on Monday, Sept. 30. Wind gusts up to 97 mph were measured on Ishigaki island, according to the Japan Meteorological Agency.

Heavy rain also soaked parts of eastern Taiwan and the Ryukyu Islands. Parts of Datong Township, Taiwan, picked up , according to the Central Weather Bureau. Winds gusted to near 50 mph at Taipei's Taoyuan Airport on Sept. 30.

Mitag then weakened to a tropical storm and brushed by eastern China on Tuesday, Oct. 1.

Heavy rain and gusty winds were reported in eastern China on Oct. 1 as Mitag's circulation center tracked near the coastline. Winds gusted to 50 to 65 mph at Shanghai's Pudong airport.

Mitag was then expected to curl northeastward, sweeping into South Korea as a tropical storm later in the week. The main threats from Mitag in South Korea were rainfall flooding and strong wind gusts.

According to Digital Typhoon, Mitag was the in the Western Pacific Ocean, the most active basin for tropical cyclones on Earth.

From 1981-2010, an average of 26 Western Pacific named storms formed each year, 17 of which became typhoons, more than double the average of Atlantic Basin named storms (12) and hurricanes (6).

Since these Western Pacific systems can form any time of year, there really is no season.