NWS Marine Forecast


   ANZ500-140800-  1058 PM EDT Thu Aug 13 2026      .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...    A stationary frontal boundary will remain off to the south near the  Virginia-North Carolina border through tonight. This system returns  northward as a warm front Friday which increases thunderstorm  chances. High pressure builds across the northeastern U.S on  Saturday before another frontal system approaches from the west on  Sunday into Monday. Small Craft Advisories may be needed Sunday  afternoon into the night due to southerly channeling.    $$
   ANZ535-140800-  Tidal Potomac from Key Bridge to Indian Head-  1058 PM EDT Thu Aug 13 2026    REST OF TONIGHT  Light winds. Waves flat.  FRI  NE winds around 5 kt. Waves 1 ft. A chance of showers.  FRI NIGHT  NE winds around 5 kt. Waves 1 ft. A chance of showers  and tstms.  SAT  NE winds around 5 kt. Waves 1 ft. A chance of showers.  SAT NIGHT  SE winds around 5 kt. Waves 1 ft. A chance of showers.  SUN  S winds 5 to 10 kt with gusts to 20 kt. Waves 1 ft. A chance  of showers and tstms.  SUN NIGHT  SW winds 5 to 10 kt. Waves 1 ft. A chance of showers  and tstms.  MON  NW winds 5 to 10 kt. Waves 1 ft. A chance of showers. A  chance of tstms through the night.  TUE  N winds around 5 kt. Waves 1 ft or less.    Winds and waves higher and visibilities lower in and near tstms.    $$