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NOAA/GLERL Great Lakes Surface Currents Map
See Additional Currents: Latest Depth-Averaged | Latest Surface
Return to GLCFS Page, Updated 2x times per day at 0155 and 1355 GMT

1 cm/s

5 cm/s

10 cm/s

20 cm/s

30 cm/s

50 cm/s

Monthly Depth-Averaged
Currents for 2010-2013
jan Jan
feb Feb
mar Mar
apr Apr
may May
jun Jun
jul Jul
aug Aug
sep Sep
oct Oct
nov Nov
dec Dec
If the map is missing, we recommend the latest Chrome browser.
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Mar 29, 2022. Due to staffing considerations, we have paused the updating of this page. We are sorry for any inconvenience. We hope to resume sometime in the near future. Please send feedback and inquiries to:
Click on map to zoom; click and drag to pan; hover to view current speed at location. Refresh page to unzoom. This animation may not work on all browsers.

Note, these maps are designed to depict a broad overview of the current field, and are considered to be more qualitative than quantitative. In particular, the specific coordinates are not very accurate. See also,

The flow patterns depicted in these visualizations of lake currents are based on simulations from the Great Lakes Coastal Forecasting System (GLCFS) operated by NOAA's Great Lakes Environmental Research Laboratory.

The "Latest" visualizations depict water motion corresponding to a snapshot of lake currents at the end of most recent FVCOM nowcast model run. Lake currents can change rapidly with changing wind conditions.

Surface currents tend to follow the wind direction more closely than currents at depth. Depth-averaged currents represent the average water motion from surface to bottom and tend to follow shoreline and bottom contours.

This map uses copyrighted technology developed by Fernanda Viegas and Martin Wattenberg ( for their stunning wind map application. They have graciously allowed us to show visualization of lake currents here until license issues are resolved.

Python scripts courtesy of Rich Signell

Please send feedback and inquiries to: