Tri-City Port — marine weather & port guide
Tri-City Port is a port in United States at 38°43.0′N 90°12.0′W. Today (Aug 3): N wind 2–3 kn, from the ECMWF IFS run 2026-08-03 12z. The live chart on this page shows current conditions and plans weather-optimized departures from this harbor.
Port facts (NGA World Port Index)| Position | 38°43.0′N 90°12.0′W |
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| Harbor size | Large |
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| Harbor type | River natural harbor |
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| Shelter | Excellent |
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| Channel depth | 3 m |
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| Tide range | 0 m |
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| Time zone | America/Chicago |
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10-day marine forecast — Tri-City Port
| Date | Wind | Gusts | Waves |
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| N 2–3 kn | 9 kn | — |
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| SSE 3–5 kn | 11 kn | — |
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| SSE 2–6 kn | 15 kn | — |
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| S 2–7 kn | 14 kn | — |
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| SSE 3–8 kn | 13 kn | — |
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| WSW 2–6 kn | 7 kn | — |
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| SSW 2–4 kn | 5 kn | — |
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| SSW 6–6 kn | 14 kn | — |
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| SW 6–6 kn | 13 kn | — |
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| SSW 6–6 kn | 13 kn | — |
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Forecast from the ECMWF IFS model run , waves from ECMWF WAM. Updated with each model cycle; the live chart below recalculates for your departure time and vessel.
Frequently asked
How is the weather at Tri-City Port right now?
As of the ECMWF IFS run 2026-08-03 12z: N wind 2–3 kn. The 10-day outlook is in the forecast table on this page and updates with each model cycle.
How big is the harbor at Tri-City Port?
Tri-City Port is classed as a large harbor (river natural harbor), with excellent shelter in the NGA World Port Index.
How deep is the approach to Tri-City Port?
Per the NGA World Port Index, the entrance channel carries about 3 m. Verify against current official charts before entry.
What restricts entry to Tri-City Port?
Entry is affected by overhead clearance limits. Check the live forecast on this page and official notices before approach.