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Ninja Synoptic

Raw synoptic charts, played back like video

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What it does

NOAA publishes synoptic forecast charts for every 24-hour period out to seven days. Viewing them normally means opening a separate page for each one and waiting on every image. Ninja Synoptic loads all the frames up front so you can scrub through them like video. No page reloads, no layout shifts, and the charts are exactly as NOAA published them.

Features

Smooth Animation

Every frame is preloaded and decoded, so scrubbing between forecast hours is instant and flicker-free.

Multiple Products

NOAA medium-range (Days 3–7), short-range (Days 0.5–2.5), and national forecast charts (Days 1–3).

Playback Controls

Play, pause, step frame by frame, adjust speed from ΒΌ to 8 fps, and toggle loop mode.

Offline Ready

Once loaded, charts stay cached in your browser. Warm the cache before heading offshore.

When to use it

Passage planning

Watch a week of forecast evolution in seconds. Troughs, fronts, and high-pressure ridges show up as they move through your route.

Pre-departure weather briefing

Flip through the short-range charts to see how conditions actually evolve over the next 84 hours, rather than reading a text summary.

Weather education

Watch fronts, isobars, and pressure gradients develop and move, straight from the official NOAA products.

Data sources

Charts come straight from NOAA's Weather Prediction Center, the National Hurricane Center, and Rutgers COOL, and are displayed without modification. This tool does not generate forecasts, add interpretation, or alter the imagery. More sources are planned, including Environment Canada and other national meteorological agencies.

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