14 August 2026
Executive Summary
Record rainfall around Tokyo has left approximately 7,000 people stranded at Narita International Airport, despite the airport itself continuing to operate.
More than 360 millimetres of rain fell across parts of Chiba prefecture within 24 hours, causing flooding, road closures, railway disruption, power outages and at least four deaths.
Narita’s own website is carrying heavy-rain notices while continuing to publish live arrival and departure information.
The risk-management lesson is unusual but important:
An airport does not have to close for the journey to fail.
Flights can operate normally while passengers, staff or cargo cannot reach or leave the terminal.
UK Impact
UK businesses may encounter the same problem at airports, ports, factories and warehouses worldwide.
The physical facility may remain operational while access fails because of:
- Flooded roads.
- Suspended railway services.
- Bridge closures.
- Landslides.
- Power failure.
- Local evacuation orders.
- Public transport disruption.
For business travellers, that can mean missed meetings or connections even where their flight lands successfully.
For cargo, it may mean goods arriving at an airport but being unable to move onwards.
Global Impact
The Narita disruption illustrates the importance of last-mile resilience.
Traditional continuity planning often concentrates on whether the principal facility is operational.
But infrastructure depends upon networks surrounding it.
An airport relies upon:
Roads + railways + electricity + employees + fuel + ground handlers + telecommunications.
Failure of any of those can materially reduce the usefulness of the airport itself.
This applies equally to:
- Ports.
- Distribution centres.
- Factories.
- Hospitals.
- Data centres.
- Construction sites.
Our View
Businesses should assess access risk as well as site risk.
Companies should:
- Identify alternative routes to important facilities.
- Check whether staff depend upon one transport connection.
- Allow contingency time for strategically important travel.
- Maintain alternative freight-forwarding arrangements.
- Identify secondary airports for time-sensitive cargo.
- Review whether goods can be temporarily warehoused if onward transport fails.
- Examine insurance treatment of prevention-of-access losses.
- Confirm whether business-interruption cover requires physical damage.
- Include surrounding infrastructure within site risk assessments.
- Test how long operations can continue if employees cannot reach the premises.
One particularly useful question is:
“If the building is completely undamaged but nobody can get to it, can we still operate?”
That scenario deserves far more attention than it usually receives.
Risk Indicator: ELEVATED
Disclaimer
The information contained within these Market Alerts is provided for general market awareness and informational purposes only. It does not constitute financial, legal, investment, regulatory or insurance advice. Whilst every effort has been made to ensure accuracy at the time of publication using multiple reputable and independently verified sources, geopolitical events, legislation, regulation and market conditions may change rapidly. Readers should obtain appropriate professional advice before acting upon any information contained herein.
Invictus Risk Solutions LLP – Helping organisations stay ahead of emerging risks through informed insight and independent analysis.