NWS Marine Forecast



 Hazardous marine condition(s):
 Hazardous Weather Outlook
 Small Craft Advisory
   ANZ500-220800-  1059 PM EDT Tue Jul 21 2026      .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY...    A cold front will slowly push through the waters tonight into  Wednesday. High pressure will build in from the west Thursday and  Friday. Special Marine Warnings for strong to severe thunderstorms  are likely this afternoon and evening. Small Craft Advisories will  likely be needed late Wednesday night through Thursday morning.    $$
   ANZ531-220800-  Chesapeake Bay from Pooles Island to Sandy Point-  1059 PM EDT Tue Jul 21 2026    SMALL CRAFT ADVISORY IN EFFECT UNTIL 8 AM EDT WEDNESDAY    REST OF TONIGHT  SW winds 15 to 20 kt with gusts to 25 kt. Waves  2 to 3 ft. Patchy fog late this evening. Scattered tstms. Showers.  Vsby 1 NM or less.  WED  W winds 10 to 15 kt with gusts to 20 kt. Waves 2 ft. A chance  of showers and tstms.  WED NIGHT  NW winds 10 kt...becoming N late. Gusts up to 20 kt.  Waves 2 ft. A chance of showers.  THU  N winds 10 to 15 kt. Gusts up to 25 kt in the morning. Waves  2 ft.  THU NIGHT  NE winds 5 to 10 kt. Waves 1 ft.  FRI  E winds 5 to 10 kt. Waves 1 ft.  FRI NIGHT  E winds 5 to 10 kt. Waves 1 ft.  SAT  E winds 5 to 10 kt. Waves 1 ft.  SUN  SE winds 5 kt...becoming S. Waves 1 ft or less. A chance of  showers through the night.    Winds and waves higher and visibilities lower in and near tstms.    $$