Expires:202404240800;;269905 FZUS51 KLWX 240235 CWFLWX Coastal Waters Forecast National Weather Service Baltimore MD/Washington DC 1035 PM EDT Tue Apr 23 2024 Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. ANZ500-240800- 1035 PM EDT Tue Apr 23 2024 .SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY... A cold front will cross the area Wednesday. High pressure will return for the end of the week. Small Craft Advisories will likely be needed through Thursday morning, and again Friday afternoon and Saturday afternoon. $$