Manually produced analysis of sea state produced for 3 hour intervals for offshore and adjacent waters of the Atlantic and Pacific Oceans. These graphics are used by the Marine Prediction Center for its 24 hour "watch" on winds and sea state conditions in its regional area of responsibility. These graphics also provide guidance for National Weather Service Forecast Offices with coastal water responsibility on the west and east coast of the U.S. . The charts depict the analyzed significant sea state at 3 foot height contour intervals. The central value of signicant wave heights imply that higher individual waves are possible. The analysis mainly emphasizes the area enclosed within the borders depicted on the graphic. The data comes from ships and buoys. In areas of sparse data, model guidance and continuity is used to make an estimate of significant sea state. Reported sea state from buoys and ships is in feet and is colored in green. Clockwise the station plot has sea state on the right side followed by the station ID, swell period in seconds, and swell direction in degrees.