NDBC 45187 · Buoy · Great Lakes

Winthrop Harbor, IL

42°29.5′N 087°46.7′W

Reading the buoy's spectra from NDBC…

Nearest shore 1 mi W, 267°T 4 mi NE of Zion Coastline: Natural Earth · places: GeoNames

A simulation of the sea at this buoy, 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 48 hours

What the buoy reports

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