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A potential super El Niño event could expose ports, terminals and logistics operators to simultaneous disruption across transport networks, energy systems, commodity markets and manufacturing centres, according to TT Club.
The transport and logistics insurer said forecasts pointing to an unusually strong El Niño should prompt companies to review business continuity plans, supplier dependencies and crisis response procedures before weather related disruption begins affecting cargo flows.
Unlike a local storm or isolated port closure, a severe El Niño can influence weather patterns across several regions at the same time. That creates the risk of drought in one market, flooding in another and stronger Pacific storms elsewhere, placing pressure on supply chains that depend on predictable production and transport schedules.
Ports face weather and congestion risks
El Niño is a naturally occurring climate cycle linked to unusually warm surface water in the central and eastern tropical Pacific Ocean. Strong events can alter rainfall, temperature and storm patterns across large parts of the world.
For ports and shipping companies, the operational consequences may include berth closures, damaged infrastructure, interrupted pilotage services and changes to vessel schedules. Increased storm activity can also make navigation more difficult and force operators to suspend cargo handling for safety reasons.
Even relatively short port closures can create wider disruption. A terminal that loses one or two working days may face a queue of vessels, containers and inland transport movements that takes much longer to clear.
This pressure could spread beyond maritime routes. Flooded roads, damaged rail links and restricted river transport can delay cargo after it leaves the terminal, reducing the value of maintaining normal port operations.
TT Club said the additional disruption would affect a logistics system still adjusting to geopolitical conflict, changing trade routes and recent congestion. Further delays could raise freight costs, increase inventory requirements and reduce schedule reliability.
Energy shortages could slow manufacturing
El Niño related drought can reduce water levels in reservoirs and cut hydropower generation. In manufacturing markets that depend heavily on hydroelectricity, lower output could lead to power rationing or temporary production cuts.
The consequences may be felt across industrial supply chains, particularly where factories produce components used by multiple sectors. A slowdown at one supplier can quickly affect manufacturers operating thousands of kilometres away.
Energy demand may also rise during periods of unusually high temperatures. When additional electricity demand meets reduced hydropower output, governments and utilities may be forced to prioritise households or essential services over industrial users.
Mining and raw material supply could face separate risks. Flooding may restrict access to mines, damage roads and interrupt the movement of bulk commodities. Drought can also affect water intensive mineral processing operations.
For project freight and breakbulk operators, disruption to mining, energy and industrial production may delay equipment movements, construction schedules and heavy lift campaigns.
Climate and geopolitical risks may combine
TT Club identified the convergence of climate and geopolitical pressures as one of the more serious concerns.
A severe weather event does not occur in isolation. It can interact with fuel price volatility, fertiliser shortages, trade restrictions and conflict related route changes.
Reduced fertiliser availability may deepen the impact of drought on crop yields. Higher fuel costs may make it more expensive to divert cargo around disrupted routes. Weather related port closures may also amplify delays already caused by security restrictions or vessel rerouting.
The result resembles a series of connected gears. Pressure on one part of the system can quickly move through agriculture, energy, manufacturing, shipping and consumer markets.
Food and commodity prices may rise when crop losses or transport uncertainty reduce available supply. Importers may need to secure alternative sources, often from more distant markets, increasing tonne miles and transport costs.
Exposure extends beyond affected regions
The strongest physical effects of El Niño are often concentrated in tropical and subtropical areas, but the commercial consequences can spread globally.
European businesses may experience warmer conditions, changing energy demand and imported inflation rather than direct infrastructure damage. Companies elsewhere may face drought, flooding, agricultural losses, lower hydropower production or storm related transport disruption.
TT Club said businesses should assess exposure by dependency rather than geography alone. A company may have no facilities in an affected region but could still rely on suppliers, commodities, ports or energy systems located there.
Indirect effects may include higher insurance premiums, increased working capital requirements and greater financing costs. Companies may need to hold more inventory, pay for alternative transport or accept longer delivery windows.
Companies urged to test resilience plans
TT Club recommended that organisations include El Niño scenarios in procurement, logistics and operational risk assessments.
Scenario planning should consider compound disruption, including the possibility that extreme weather occurs alongside trade restrictions, conflict or energy shortages.
Companies can also reduce exposure by diversifying suppliers and transport routes. Greater visibility across lower tier suppliers may help identify vulnerabilities that are not apparent from direct purchasing relationships.
Clear escalation procedures are equally important. Businesses should define who makes operational decisions, when alternative routes are activated and how customers are informed when disruption occurs.
Seasonal climate forecasts can provide early warning, but they do not remove uncertainty. Their value lies in allowing operators to prepare capacity, review contracts and test contingency arrangements before cargo begins to move.
TT Club said its climate ready supply chain whitepaper provides a framework for assessing climate exposure, adaptation measures and continuity planning across logistics operations.
