Update: Four dead after Typhoon Dujuan disrupts travel across Japan

At least four people have died and 22 were injured after Typhoon Dujuan brought torrential rain and destructive winds to Tokyo and surrounding prefectures, causing widespread travel disruption.

Japan Airlines cancelled 135 flights and All Nippon Airways cancelled 140 as the storm swept through the region. More than 1.6 million residents in and around Tokyo were urged to evacuate on Monday, although the evacuation advice was not mandatory.

The storm also caused widespread power outages, with around 45,000 households in Chiba Prefecture still without electricity today (Tuesday 22 September).

Dujuan triggered landslides across parts of Kanagawa and Chiba prefectures. A woman in her 60s was killed after mud entered a home in Yokosuka, while authorities in Chiba reported three deaths following a series of landslides. Several people remained missing.

The typhoon weakened as it moved northeast away from Japan earlier today, allowing authorities to downgrade most heavy rain and landslide warnings.

However, Dujuan brought record rainfall to parts of the Tokyo region. Oshima, around 120km south of central Tokyo, received 832mm of rain over 48 hours – more than twice its average rainfall for the entire month of September. Tokyo’s Edogawa ward recorded 282.5mm over 24 hours.

The storm struck during a major holiday period in Japan, disrupting travel and forcing the cancellation or curtailment of a number of events.

The disruption could generate claims and assistance requests involving cancelled or delayed journeys and additional travel costs.

Cover will depend on individual policy terms and circumstances, including when insurance was purchased and when the typhoon became a known event.

Travellers remaining in affected areas may also require support as transport networks and local services recover from the storm.