Coastal Flood Advisory

Locations Affected

Baltimore, MD ∙ Parkville, MD ∙ St. Charles, MD ∙ Benedict, MD ∙ Willows, MD ∙ Lusby, MD ∙ Edgemere, MD ∙ Fairview Beach, VA ∙ Pomfret, MD ∙ Milford, MD

Full Alert Message

URGENT - IMMEDIATE BROADCAST REQUESTED Coastal Hazard Message National Weather Service Baltimore MD/Washington DC 151 PM EDT Tue Aug 19 2025 ...COASTAL FLOOD ADVISORY IN EFFECT FROM 3 AM TO 9 AM EDT WEDNESDAY... * WHAT...Up to one half foot of inundation above ground level expected in low lying areas due to tidal flooding. * WHERE...Shoreline in Southern Baltimore County and the city of Baltimore. * WHEN...From 3 AM to 9 AM EDT Wednesday, especially around the time of high tide. * IMPACTS...At 3.5 feet, flooding is occurring at the end of Thames Street in Baltimore. Water covers the promenade in the Inner Harbor in multiple locations. At 3.0 feet, water begins encroaching upon yards in the Bowleys Quarters area. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tide at Fort McHenry Baltimore is at 3:53 PM and 5:04 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 -------- --------- --------- --------- ------- -------- 19/04 PM 2.4 0.7 1.1 0.5 None 20/05 AM 3.7 2.0 1.6 0.5 Minor 20/05 PM 2.8 1.1 1.5 0.5 None 21/05 AM 3.0 1.3 1.0 0.5 None 21/05 PM 1.7 0.0 0.3 0.5 None 22/07 AM 2.5 0.8 0.5 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 -------- --------- --------- --------- ------- -------- 19/05 PM 1.8 0.1 0.6 1.0 None 20/05 AM 3.0 1.3 0.9 1.0 Minor 20/05 PM 2.2 0.5 0.9 1.0 None 21/06 AM 2.9 1.2 0.8 1.0 None 21/06 PM 1.5 -0.2 0.1 1.0 None 22/08 AM 2.7 1.0 0.7 1.0 None

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