NWS Marine Forecast



 Hazardous marine condition(s):
 Small Craft Advisory
 Hazardous Weather Outlook
   ANZ500-190800-  757 PM EDT Thu Jun 18 2026      .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...    A cold front will slowly cross the waters through Friday morning.  High pressure will build near the area over the weekend before  another frontal system approaches the area early next week. Small  Craft Advisories will likely be needed for portions of the waters  Friday and Saturday.    $$
   ANZ539-190800-  Chester River to Queenstown MD-  757 PM EDT Thu Jun 18 2026    SMALL CRAFT ADVISORY IN EFFECT UNTIL 1 AM EDT FRIDAY    TONIGHT  W winds 10 to 15 kt. Gusts up to 20 kt until early  morning. Waves 1 to 2 ft. Isolated showers after midnight.  FRI  NW winds 5 kt. Waves less than 1 ft. Scattered showers.  FRI NIGHT  W winds 5 to 10 kt. Waves 1 ft.  SAT  W winds 10 kt. Waves 1 to 2 ft.  SAT NIGHT  NW winds 5 to 10 kt. Waves 1 to 2 ft.  SUN  W winds 5 kt. Waves less than 1 ft.  SUN NIGHT  SE winds 5 to 10 kt. Waves 1 ft. A chance of showers  and tstms.  MON  S winds 10 to 15 kt...becoming W after midnight. Waves 2 ft.  Showers with a chance of tstms.  TUE  NW winds 5 to 10 kt. Waves 1 to 2 ft.    Winds and waves higher and visibilities lower in and near tstms.    $$