Typhoon Dujuan lashes Ogasawara with 109 km/h gust as rainfall tops 120 mm
September 19, 2026, morning update: Typhoon Dujuan has produced a new set of confirmed impacts across Japan’s remote Ogasawara Islands. The Japan Meteorological Agency recorded a peak gust of 30.4 m/s on Chichijima, equivalent to about 109 km/h.
Rainfall has also become substantial. JMA data show a maximum 24-hour total of 101.5 mm on Chichijima and 121.5 mm on Hahajima by Saturday morning. The figures confirm that Dujuan has delivered both strong wind and heavy tropical rain to the island group.
Dujuan analysed at 975 hPa with 115 km/h sustained winds
The Korea Meteorological Administration analysed Dujuan at 975 hPa at 00:00 UTC on Saturday, with maximum sustained winds of 32 m/s, or 115 km/h. The centre was near 26.4°N, 139.8°E and moving west-southwest at around 10 km/h. Its broad circulation means strong winds extend far beyond the inner core.
KMA’s forecast still allows Dujuan to strengthen temporarily. By 12:00 UTC on Saturday, the agency projects around 35 m/s, or 126 km/h, with central pressure near 970 hPa. Those values remain forecast intensity, not observed conditions.
Attention shifts north toward the Izu Islands
The forecast track gradually bends from northwest to north and then north-northeast over the next two days. That puts the Izu Islands south of Honshu into the next zone of concern. JMA local guidance for several Izu communities shows periods of rain and thunderstorms developing from Saturday night into Sunday, with some three-hour rainfall intervals reaching 20 mm or more.
A direct mainland Japan landfall is not established by the current guidance. The key uncertainty is how quickly Dujuan turns north and how close its core comes to the Izu chain and later Japan’s Pacific coast.
Observed impacts and forecast risk must remain separate
The confirmed facts are the 109 km/h gust on Chichijima, the 101.5 mm and 121.5 mm 24-hour rainfall totals, and Dujuan’s analysed intensity near 115 km/h. Further strengthening toward 126 km/h and the storm’s later approach toward the Izu Islands remain forecast developments. That distinction is central as Dujuan enters its next phase.