These charts depict the analyzed significant sea state at 1 meter height contour intervals. The analysis uses data primarily from ships and buoys. In areas of sparse data, model guidance is used to make an estimate of sea state. Additional guidance used may come from the NAVY wave model or the Canadian wave forecast. Maximum significant wave heights analyzed does not take into account higher individual wave heights.
Arrows point toward the primary swell direction.
During the winter season, the ice edge is depicted as a bold jagged line.