The Northwest Seaport Alliance (Seattle + Tacoma) Weekly Volumes & Metrics Report 9/15/25

Overview

For the week ending in September 6, we saw lowered metrics across the board, both week over week and year over year. This is in part due to the shorter week with the Labor Day holiday falling that Monday. There was also 1 void and 2 delays of larger calls.  

International imports were down 19.1% from the week before and almost 40% compared to the September 2024 weekly average. Truck transactions were down 28.3% week over week and 37.5% compared to the September 2024 weekly average. Vessel lifts were down 12.4% down week over week and down 25.1% compared to the September 2024 weekly average. 

For the week ending in September 6, we saw lowered metrics across the board, both week over week and year over year. This is in part due to the shorter week with the Labor Day holiday falling that Monday. There were also 1 void and 2 delays of larger calls.  

International imports were down 19.1% from the week before and almost 40% compared to the September 2024 weekly average. Truck transactions were down 28.3% week over week and 37.5% compared to the September 2024 weekly average. Vessel lifts were down 12.4% down week over week and down 25.1% compared to the September 2024 weekly average. 

You can find previous week’s report here. You can find the full vessel schedule, including the 4 week look ahead and breakdown by harbor, here

Vessel Calls

Week Ending August 29 –  12 Voyages (1 Void,  1 Delayed Arrival) 

Week Ending September 5 – 11Voyages (1 Void, 2 Delayed Arrival) 

Week Ending September 12 – 13 Voyages (2 Void) 

Week Ending September 19 – 13 Voyages (1 Void, 1 Delay) 

Weekly International Import Containers

Week Ending September 5 – 10,260 containers imported  

-20.2% vs 2025 YTD (12,860)  

-24.5% vs 2024 Weekly Average (13,592)  

-39.4% vs September 2024 Weekly Average (16,936) 

Weekly Truck Transactions (Containers In/Out of Terminal via Truck)

Week Ending September 5 – 17,631 truck transactions  

-25.8% vs 2025 YTD Average (23,774)  

-37.5% vs September 2024 Weekly Average (28,215) 

Weekly Vessel Lifts (Containers On/Off a Vessel)

*Includes Empty Container Moves   

Week Ending September 5 – 21,918 

-18.3% vs 2025 YTD Average (26,829)  

-25.1% vs September 2024 Weekly Average (29,261)