Coastal Flood Advisory

Full Alert Message

Coastal Hazard Message National Weather Service Baltimore MD/Washington DC 1045 AM EDT Fri Aug 22 2025 ...COASTAL FLOOD ADVISORY NOW IN EFFECT UNTIL 6 AM EDT MONDAY... * WHAT...Two to two and half feet of inundation above ground level in low lying areas due to tidal flooding. * WHERE...Southern Baltimore, Calvert and Southeast Harford Counties. * WHEN...Until 6 AM EDT Monday, especially around the time of high tide. * IMPACTS...At 4.25 feet, the concrete promenade at Fells Point begins to flood. Water also begins to cover the boardwalk at the Maritime Park water taxi stop. Thames Street is flooded, and much of the promenade in the Inner Harbor is flooded. At 3.0 feet, water begins encroaching upon yards in the Bowleys Quarters area. At 4.5 feet, portions of the Havre de Grace Yacht Basin are flooded, along with Hutchins Park. At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.5 feet, yards are flooded near Charles Street and Williams Street in Solomons. Nearby parking lots and the streets themselves are covered by more than a half foot of water. * ADDITIONAL DETAILS...Tides two to two and a half feet above normal. The next high tide at Chesapeake Beach is at 4:03 PM and 4:46 AM. The next high tide at Fort McHenry Baltimore is at 6:50 PM and 7:33 AM. The next high tide at Solomons Island is at 2:15 PM and 2:56 AM. The next high tide at Havre de Grace is at 10:20 PM and 10:26 AM. PRECAUTIONARY/PREPAREDNESS ACTIONS... If travel is required, allow extra time as some roads may be closed. Do not drive around barricades or through water of unknown depth. Take the necessary actions to protect flood-prone property. && Time of high total tides are approximate to the nearest hour. NW Branch Patapsco River at Baltimore MD MLLW Categories - Minor 3.4 ft, Moderate 4.6 ft, Major 6.0 ft MHHW Categories - Minor 1.7 ft, Moderate 2.9 ft, Major 4.3 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/06 PM 3.8 2.1 2.3 0.5 Minor 23/07 AM 4.3 2.6 2.4 0.5 Minor 23/07 PM 3.4 1.7 1.8 0.5 Minor 24/08 AM 3.6 1.9 1.7 0.5 Minor 24/08 PM 3.3 1.6 1.6 0.5 None Chesapeake Bay at Bowleys Quarters MLLW Categories - Minor 3.0 ft, Moderate 3.8 ft, Major 5.0 ft MHHW Categories - Minor 1.3 ft, Moderate 2.1 ft, Major 3.3 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/07 PM 3.0 1.3 1.4 0.5 Minor 23/08 AM 3.5 1.8 1.5 0.5 Minor 23/08 PM 3.0 1.3 1.3 1.0 Minor 24/08 AM 3.2 1.5 1.3 1.0 Minor 24/08 PM 2.7 1.0 1.0 1.0 None Chesapeake Bay at North Beach MLLW Categories - Minor 3.0 ft, Moderate 4.0 ft, Major 5.0 ft MHHW Categories - Minor 1.6 ft, Moderate 2.6 ft, Major 3.6 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/05 PM 3.1 1.7 1.6 0.5 Minor 23/06 AM 3.4 2.0 1.6 0.5 Minor 23/05 PM 2.9 1.5 1.4 1.0 None 24/06 AM 3.1 1.7 1.4 1.0 Minor 24/07 PM 2.7 1.3 1.1 1.0 None 25/07 AM 2.7 1.3 1.0 0.5 None Patuxent River at Solomons Island MLLW Categories - Minor 3.0 ft, Moderate 4.0 ft, Major 5.0 ft MHHW Categories - Minor 1.5 ft, Moderate 2.5 ft, Major 3.5 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/02 PM 3.7 2.2 2.1 1.0 Minor 23/02 AM 3.9 2.4 2.2 1.0 Minor 23/03 PM 3.5 2.0 1.9 1.0 Minor 24/03 AM 3.5 2.0 1.8 1.0 Minor 24/03 PM 3.3 1.8 1.7 1.0 Minor 25/04 AM 3.2 1.7 1.5 1.0 Minor Chesapeake Bay at Havre de Grace MD MLLW Categories - Minor 4.0 ft, Moderate 5.5 ft, Major 7.0 ft MHHW Categories - Minor 2.2 ft, Moderate 3.7 ft, Major 5.2 ft Total Total Departure Day/Time Tide Tide from Norm Waves Flood ft MLLW ft MHHW ft ft Impact -------- --------- --------- --------- ------- -------- 22/09 AM 4.4 2.0 1.9 1.0 Minor 22/10 PM 3.6 1.2 1.2 1.0 None 23/10 AM 4.6 2.2 2.1 1.0 Minor 23/11 PM 4.4 2.0 1.8 1.0 Minor 24/11 AM 4.5 2.1 2.0 1.0 Minor 25/12 AM 4.0 1.6 1.4 1.0 Minor