Typhoon No. 6 is forecast to approach Okinawa and the Amami Islands starting Monday, triggering mandatory evacuation warnings in several areas [1].
This storm represents a critical test of Japan's new disaster-weather information system, which launched on May 28, 2026 [3]. The system utilizes a five-level scale to communicate risk more clearly to the public, emphasizing the need for immediate action when higher levels are reached.
Authorities have issued a Level 4 “danger” warning, identified by the color purple [1]. Under the current disaster-weather framework, a Level 4 warning triggers a requirement for residents to evacuate to safety [3].
Meteorologists expect the storm to bring significant precipitation, with forecast rainfall totals between 200 and 300 mm [1]. The typhoon is expected to retain its strong intensity as it moves east toward Honshu, the main island of Japan [1].
Travel has already been heavily disrupted. All Nippon Airways (ANA) reported 117 flight cancellations, affecting more than 14,000 people [4]. Japan Airlines (JAL) also canceled 67 flights [4].
"Typhoon No. 6 is swirling white in the sea south of Okinawa," said meteorologist Kanna Fukuyama of TBS NEWS DIG [2].
The Japan Meteorological Agency said that as of 3 p.m. on May 28, the storm was moving north through the waters south of Okinawa [5]. Residents across the southern coast of Honshu are advised to prepare for hazardous weather conditions as the system tracks eastward [1].
“A Level 4 “danger” warning, identified by the color purple, triggers a requirement for residents to evacuate.”
The deployment of the new five-level disaster-weather system during Typhoon No. 6 marks a shift in how Japan manages public risk. By linking specific colors and levels to mandatory actions—such as the Level 4 purple warning for evacuation—the government aims to reduce casualties caused by delayed responses to traditional weather alerts.
