Live Demo: Satellite SST & Chlorophyll Chart

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San Francisco Bay Area

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—°F

move over the water

tap the chart to drop a mark

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Temperature range

min max

Fixed range. The same color means the same temperature everywhere, so you can compare one part of the coast against another.

Basemap

Chart: depths and seamarks. True color: what the satellite saw at this moment — clouds and all — so a hole in the temperature data can be read for what it is. Satellite: a fixed cloud-free mosaic, for an exact coastline. Offline: no network needed.

Color

Opacity 92%

Drop the opacity to read the depth contours and the seafloor under the water.

Marks

Advanced

Blend window

Method

Rendering

Contours Detail Calibrate to buoys

Pulls the satellite skin field onto the in-situ buoy water temps. Off by default — the raw field already matches the other services.

Gaps

Fill inpaints cloud holes from the water around them — smooth, and a guess. Show holes colors only water a satellite actually looked at. Single passes always show holes.

Account settings

GPS format

Temperature

Distance

New waypoint