Active Weather Alerts
Coastal Flood Advisory
Issued: 1:44 AM Aug. 24, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT UNTIL 6 AM EDT MONDAY... * WHAT...Up to a 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...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. At 4.0 feet, water begins to go over the bulkhead at the Havre de Grace Yacht Basin in multiple locations. At 3.0 feet, water is expected to reach backyards near 9th Street in North Beach, and could approach 9th Street. At 3.0 feet, parking lots near Charles Street in Solomons begin to flood, with several inches of water covering low-lying portions of Charles Street and Williams Street. * ADDITIONAL DETAILS...Tides one and a half to two feet above normal. The next high tide at Fort McHenry Baltimore is at 8:11 AM and 8:28 PM. The next high tide at Chesapeake Beach is at 5:24 AM and 5:41 PM. The next high tide at Solomons Island is at 3:36 AM and 3:50 PM. The next high tide at Havre de Grace is at 11:02 PM and 11:10 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 -------- --------- --------- --------- ------- -------- 24/08 AM 3.5 1.8 1.6 0.5 Minor 24/08 PM 3.0 1.3 1.3 0.5 None 25/08 AM 2.8 1.1 1.1 0.5 None 25/09 PM 2.5 0.8 0.7 0.5 None 26/08 AM 2.1 0.4 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 -------- --------- --------- --------- ------- -------- 23/09 PM 2.8 1.1 1.2 1.0 None 24/08 AM 3.0 1.3 1.1 1.0 Minor 24/08 PM 2.6 0.9 0.9 1.0 None 25/09 AM 2.5 0.8 0.7 0.5 None 25/09 PM 2.2 0.5 0.4 1.0 None 26/10 AM 1.8 0.1 0.1 0.5 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 -------- --------- --------- --------- ------- -------- 24/06 AM 3.1 1.7 1.4 1.0 Minor 24/07 PM 2.8 1.4 1.2 1.0 None 25/07 AM 2.8 1.4 1.1 0.5 None 25/07 PM 2.4 1.0 0.8 0.5 None 26/07 AM 2.1 0.7 0.5 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 -------- --------- --------- --------- ------- -------- 24/03 AM 3.2 1.7 1.5 1.0 Minor 24/03 PM 3.1 1.6 1.5 1.0 Minor 25/04 AM 3.0 1.5 1.3 1.0 Minor 25/04 PM 2.6 1.1 1.0 1.0 None 26/04 AM 2.4 0.9 0.8 1.0 None 26/05 PM 2.3 0.8 0.7 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 -------- --------- --------- --------- ------- -------- 23/11 PM 4.2 1.8 1.6 1.0 Minor 24/11 AM 4.3 1.9 1.8 1.0 Minor 24/11 PM 3.9 1.5 1.4 0.5 None 25/12 PM 3.7 1.3 1.3 1.0 None 26/12 AM 3.4 1.0 0.8 1.0 None 26/01 PM 3.0 0.6 0.6 1.0 None &&
Small Craft Advisory
Issued: 8:27 PM Aug. 23, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL 2 AM EDT SUNDAY... * WHAT...Southeast winds 10 to 15 kt with gusts up to 25 kt. * WHERE...Tidal Potomac River from Indian Head MD to Smith Point VA, and Chesapeake Bay from Smith Point VA to Pooles Island MD and adjoining estuaries. * WHEN...Until 2 AM EDT Sunday. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
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