Rugby World Cup 2019 organisers have urged fans not already in Kamaishi to avoid travelling to the city under threat from Typhoon Hagibis.
Kamaishi is set to host the final Pool B match between bottom teams Namibia and Canada on Sunday afternoon but by Saturday it was still unclear if the match would go ahead.
More Typhoon Hagibis trouble
Two Rugby World Cup fixtures have been cancelled as a precautionary measure with the All Blacks clash vs Italy and the Pool C decider between England and France scrapped.
The Governor of Iwate prefecture and the Major of Kamaishi warned residents and visitors to seek safe shelter on Saturday and asked fans to avoid any unnecessary travel.
Fans keen on taking in the match should keep an eye of the Rugby World Cup social channels as well as relevant weather forecasts and government warnings.
A statement released by Rugby World Cup organisers read: "World Rugby and the Japan Rugby 2019 Organising Committee notes and supports the strong recommendation issued by the Governor of Iwate prefecture and the Major of Kamaishi warning all residents and visitors to seek safe shelter.
"Safety is our number one consideration and with Typhoon Hagibis predicted to impact Kamaishi in the early hours of Sunday morning, we continue to be in close contact with the city and the local authorities regarding the viability of hosting the match on Sunday as scheduled.
"We have advised the Namibia and Canada teams of the current situation and potential of cancellation, and our message to fans not currently in Kamaishi is not to travel before confirmation of the match status following a full assessment of the venue and associated infrastructure early on Sunday morning.
"Fans should keep up to date with the latest information relating to all Sunday's matches via the official Rugby World Cup 2019 social and digital channels, including the @Japan2019_ENG Twitter account."
Scotland threaten legal action.
Scotland RFU have threatened legal action if their final Pool match against Japan is called off. Should the match not go ahead Japan would progress to the quarterfinals as the Pool winners and would face the Springboks on 20 October.
Gregor Townsend's team need to beat Japan with either a bonus point win or by a margin of more than seven points. A draw or any scenario where Scotland don't earn four more log points than the hosts will end the Scots tournament.