Active Weather Alerts
Coastal Flood Advisory
Issued: 3:02 AM Aug. 23, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT MONDAY... * WHAT...Up to one foot 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...Flooding is occurring at the end of Thames Street in Baltimore. Water covers the promenade in the Inner Harbor in multiple locations. Water begins encroaching upon yards in the Bowleys Quarters area. Portions of the Havre de Grace Yacht Basin are flooded, along with Hutchins Park. Water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. 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 tides at Fort McHenry Baltimore are 7:33 AM and 7:40 PM. The next high tides at Havre de Grace are 10:26 AM and 11:02 PM. The next high tides at Chesapeake Beach are 4:46 AM and 4:53 PM. The next high tides at Solomons Island are 2:56 AM and 3:04 PM. 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 -------- --------- --------- --------- ------- -------- 23/07 AM 3.7 2.0 1.8 0.5 Minor 23/07 PM 3.4 1.7 1.8 0.5 Minor 24/07 AM 3.6 1.9 1.9 0.5 Minor 24/08 PM 3.2 1.5 1.5 0.5 None 25/08 AM 3.0 1.3 1.3 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 -------- --------- --------- --------- ------- -------- 23/08 AM 3.5 1.8 1.5 1.0 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 25/09 AM 2.6 0.9 0.8 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 -------- --------- --------- --------- ------- -------- 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 25/07 PM 2.3 0.9 0.7 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 -------- --------- --------- --------- ------- -------- 23/02 AM 3.5 2.0 1.8 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 3.2 1.7 1.6 1.0 Minor 25/03 AM 3.2 1.7 1.6 1.0 Minor 25/04 PM 2.9 1.4 1.3 1.0 None 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 -------- --------- --------- --------- ------- -------- 22/11 PM 4.1 1.7 1.6 1.0 Minor 23/10 AM 4.6 2.2 2.1 1.0 Minor 23/11 PM 4.3 1.9 1.7 1.0 Minor 24/11 AM 4.5 2.1 2.0 1.0 Minor 24/11 PM 4.0 1.6 1.5 1.0 Minor 25/12 PM 3.9 1.5 1.5 1.0 None &&
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