The NERACOOS Model Forecast / Observation Viewer was designed to permit comparing model forecasts against actual observation for both wave height and water levels.
The lines represent the boundaries covered by the two models; red for WW3 and yellow for FVCOM. FVCOM has both a Northeast Atlantic domain and a smaller Massachusetts Bay domain which is used by the tide stations within it.
Click the symbols to view the graphs.
Water levels forecasts and observations are MSL (Mean sea level).