Currents Atlas

Ocean currents, Gulf Stream analysis, and tidal data. A 1-kt adverse current is 24 nm lost per day.

Ocean current products

NCEP Marine Modeling (RTOFS) Operational global ocean forecast, daily, 1/12° HYCOM data server Global HYCOM analyses + forecasts AOML altimetry / current variability Satellite-derived SSH and surface currents Ocean Weather Services Commercial Gulf Stream analysis

Gulf Stream

OPC Gulf Stream analysis (text) Daily hand analysis — North/South walls, eddies (plain text) Rutgers RU-COOL High-res SST and ocean obs for eddy hunting NESDIS SST contours High-res contour charts

Cross the Stream as perpendicular to the flow as possible. In a N wind of 20+ kt against a 3-kt Stream current, wave heights can double and steepen dangerously — stay west of the wall or wait.

Tides & tidal currents

NOAA Tides & Currents Predictions + real-time at US stations Station map Interactive map Admiralty Tide Tables Global authoritative (paid) Mobile Geographics tides Free predictions, many non-US stations

Pilot charts — climatological currents

Monthly pilot charts show historical mean currents, winds, and gale frequencies. Good for planning, not for this week's weather.

NGA Pub 106/107/108 Atlas of Pilot Charts Free PDFs, all oceans