NDBC SJSN4 · Tide gauge · Eastern Seaboard North

Ship John Shoal, NJ

39°18.3′N 075°22.6′W

Reading the gauge's spectra from NDBC…

Nearest shore 2 nmi NNE, 022°T 11 nmi NE of Dover Coastline: Natural Earth · places: GeoNames

A simulation of the sea at this gauge, built from its wave measurements. The wave heights, periods and directions are real; the exact position of each crest is not. How it is made

This page is drawn by script. The CSV and JSON downloads have every observation.

Every measurement · last 30 days

What the gauge reports

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