Hurricane Polo Triggers Tonnage Limits at Manzanillo and Lázaro Cárdenas
Polo's slow track has imposed operational limits at Mexico's two largest Pacific container ports, directly affecting Asian cargo flows into North American manufacturing. The Navy's tonnage rule at Manzanillo illustrates the trade-off between vessel safety and supply-chain continuity. Prolonged restrictions would raise costs for carriers and factories without altering underlying trade agreements.
Hurricane Polo weakened from Category 5 to Category 4 while moving slowly northward along Mexico's Pacific coast. The Navy order at Manzanillo allowed large container ships to continue operations but barred smaller craft; similar restrictions were placed on Acapulco, Zihuatanejo, Puerto Marqués and Lázaro Cárdenas. Ships already berthed were instructed to double mooring lines ahead of rising winds and swell.
Manzanillo and Lázaro Cárdenas handle the largest share of Asia-origin container traffic entering western Mexico before onward movement by rail and truck to industrial zones. Any multi-day closure raises demurrage costs for carriers and delays just-in-time parts for automotive and electronics assembly plants that rely on these gateways under USMCA rules of origin.
The storm's projected path toward Cabo San Lucas next week could extend restrictions to Puerto San Carlos, affecting fuel, agricultural and seafood movements. Duration of the tonnage limits, not peak wind speed, will determine whether carriers divert to U.S. West Coast ports or absorb higher Mexican logistics charges.
State incentives favor rapid reopening to protect manufacturing employment and export revenues, yet safety thresholds set by the Navy remain the binding constraint on throughput.
Mexican Navy: tonnage restrictions at Manzanillo lifted by October 12 if sustained winds fall below 34 knots.
Sources (3)
- [1]Mexican Navy Port Restriction Notice(https://www.gob.mx/semar)
- [2]FreightWaves Pacific Coast Update(https://www.freightwaves.com/news)
- [3]La Jornada Port Closures Report(https://www.jornada.com.mx)