Typhoon Chan-mi is expected to strike Okinawa's main island tonight, bringing record-breaking rainfall and dangerous wind speeds [1].

The storm poses a significant risk to infrastructure and public safety in the southern islands before shifting its path toward mainland Japan. Local authorities said the system maintains strong intensity as it moves north-northwest [3].

Forecasters expect maximum instantaneous wind speeds of 45 m/s [1]. FNN said the region faces the threat of violent winds. The storm is also predicted to bring approximately 250 mm of rain by noon tomorrow [1].

WeatherNews said the storm is moving north-northwest south of Okinawa [3]. The agency said that strict vigilance against stormy weather is necessary as the system passes near the main island between Monday and Tuesday [3].

While Okinawa faces the immediate impact, the storm's influence will extend to the Kanto region. Heavy rain and strong winds are forecast to disrupt the Tokyo area on Wednesday, June 3 [1]. The peak of this rainfall in Kanto is expected during the morning hours [1].

Residents in the path of the storm are advised to secure loose outdoor items and monitor emergency broadcasts. The combination of high wind speeds and intense precipitation increases the risk of flooding, and landslides in vulnerable coastal and mountainous areas.

“Expected maximum instantaneous wind speeds are 45 meters, with the risk of violent winds.”

The trajectory of Typhoon Chan-mi indicates a high-impact event for both the periphery and the center of Japan. The immediate threat to Okinawa involves extreme wind and precipitation, while the subsequent shift toward the Kanto region suggests a widespread disruption of transport and commerce in the nation's most populous area.