Henet Wave Forecast Calculator
Multi-swell · up to 3 source regions · shared map · spectral dispersion
Deep Water Only
Target Location (shared by all swells)
Swell Type Preset
Storm / Wind
⚠ Duration may be insufficient — Hs and Tp will be reduced.
Source Location
Advanced Parameters
Swell Type Preset
Storm / Wind
⚠ Duration may be insufficient — Hs and Tp will be reduced.
Source Location
Advanced Parameters
Swell Type Preset
Storm / Wind
⚠ Duration may be insufficient — Hs and Tp will be reduced.
Source Location
Advanced Parameters
⚠ Deep-water bulk estimate only. No shoaling, refraction, island blocking, coastal transformation, or swell interaction.
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Configure swells and clickCalculate All Enabled Swells
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Run a forecast to see charts□
Run a forecast to see the map
Map tiles © Esri — World Street Map. Click markers for details.
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Run a forecast to see dispersive arrivals□
Run a forecast to see raw text output