NOAA marine data Weather & Safety
A CLEARER PICTURE OF WHAT’S AHEAD
NOAA marine weather for your passage.
Explore NOAA buoy observations, wind, waves, swell, trends, tidal-current predictions, and forecast charts along an illustrative coastal passage reference.
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Explore passage weather
Coastal or offshore. Start here.ⓘ Buoys follow your route · harbor approaches are exempt from offshore clearance. Coordinates also work: 37.8, -122.5
Route assumptions & endpoint offsets
Your passage briefing OBSERVED · NOT FORECAST
Current readings and historical changes are shown separately.
Your weather reference
87 nautical milesChoose on map
Wind ➤ Mean waves ❯❯◆ Swell➜ Tidal current (predicted) Route courseLoading observations…
Illustrative reference Selected buoy Harbor approachesWeather context · not for navigation
Tidal currents along your passage NOAA CO-OPS · PREDICTED
Plan a route to find nearby prediction stations.
Stations along your route 3 buoys
Nearby observations, ordered from departure to destination.
Notable differences along the route
The bigger picture NOAA FORECASTS
Surface conditions and outlooks from NOAA’s prediction centers.
FOLLOW YOUR PASSAGE
Underway mode
Follow your location without changing the planned route.
Position is projected onto an illustrative reference; it does not monitor hazards or provide emergency alerts. Raw GPS fixes aren’t saved or sent to this app’s server; map tiles reveal the viewed area to the map provider. Keep this page open for GPS.
Charts open at NOAA. Always verify their valid time and read current marine warnings before departure.