Small Craft Advisory for Rough Bar

(SCARB): An advisory issued by coastal and Great Lakes Weather Forecast Offices (WFO) for specialized areas near harbor or river entrances known as bars. This advisory may be included within the Coastal Waters Forecast or Nearshore Marine Forecast products. Waves in or near such bars may be especially hazardous to mariners due to the interaction of swell, tidal or river currents in relatively shallow water. Thresholds governing the issuance of Small Craft Advisories for Rough Bar are specific to local geographic areas, and are based upon parameters such as wave steepness, wind speed and direction, and local bathymetry.