US coastal water clarity this week: 4 region(s) declining, 2 region(s) steady. Notable: Clarity dropped 5.4 ft in Northeast Atlantic vs prior week.
Submarius's clarity model read Florida Keys & South Atlantic at 19.1 ft regional average; down 1.6 ft vs the prior week's read.
Submarius's clarity model read Florida Gulf Coast at 5.4 ft regional average; down 1.2 ft vs the prior week's read.
Submarius's clarity model read Southern California at 30.8 ft regional average; down 15.2 ft vs the prior week's read.
Submarius's clarity model read Hawaii at 22.2 ft regional average; consistent with the prior week's read.
Submarius's clarity model read Northeast Atlantic at 8.3 ft regional average; down 5.4 ft vs the prior week's read.
Submarius's clarity model read Mid-Atlantic & Gulf Coast at 5.6 ft regional average; consistent with the prior week's read.
Submarius estimates horizontal underwater visibility for any coastal point. It starts from that location's typical clarity for the time of year, built from in water measurements and satellite ocean color, then subtracts what changes day to day: wave stirring judged against depth and bottom type, river and runoff plumes, and tide driven water movement. Each estimate shows its data sources and how fresh they are. The underlying optics draw on Lee et al. 2015. See the methodology overview, the plain English conditions guide, and the glossary for the full picture.
Per-location and arbitrary-lat/lon clarity reads are available in the Submarius app. This weekly report publishes only regional aggregates so the model's recipe stays protected while the outcomes stay public.
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