The Narrows to Peekskill. Fetch, wind and tide set the chop. NOAA shoreline, OpenStreetMap base map.
Swipe the chart sideways for later hours.
Bars are wave height; grey bars mark hours flagged for strong gusts or darkness (the hour label gives the reason). Flags describe conditions; they are not a safety call. Blue line: tide height, with high (H) and low (L) times. Every 3 hours: sky, temperature, wind (arrow points where it blows, speed in kt) and rain chance when 20% or more.
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Colour is wave height at each spot for the wind and tide you set. Orange streaks are wind, blue streaks are the tidal current. Streak speed is for feel, not to scale.
Pick an hour on the chart to load its forecast wind and tide, or set your own: moving the dial or a slider switches to manual. Drag the dial to turn the wind. Ring colour shows the wave height each wind direction would give at the forecast spot. The orange marker is the forecast spot, a reference point in open water mid-river off Hoboken Cove, not a recommended launch site. Current directions are NOAA station NYH1928 (Pier 92). Estimates come from a simple fetch and current model, so check them against what you see on the water.