Sailing Reference

Marine Weather Forecasts

Marine forecast pages combine wind, waves, warnings, visibility, tide, current, local effects, and update timing into a departure decision.

Weather Window Inputs

A weather window is a convergence of multiple conditions, not a single favorable wind number.

Forecast: Wind, gusts, waves, weather, visibility, and warning products for the intended waters.
Observations: Buoys, stations, radar, pressure trend, and local reports that confirm or challenge the forecast.
Boat and crew threshold: Route exposure, boat capability, crew experience, daylight, tide, and safe fallback options.

Expected sustained wind and short-duration higher-speed gusts over the forecast area.

Local terrain, squalls, fronts, and sea breeze can produce stronger local effects.

Wave, swell, chop, period, steepness, and combined surface conditions.

Comfort and safety can depend more on wave period and direction than height alone.

Official hazard products that identify threshold conditions, affected areas, and valid times.

Product names and thresholds vary by region.

Water-level and water-movement information that affects depth, harbor entrances, docking, and timing.

Wind against current can make short, steep seas in confined waters.

References

official

Official U.S. coastal, Great Lakes, offshore, high seas, warning, and observation marine weather products.

official

Official U.S. tide, current, water-level, and PORTS observation source for local marine planning.