Active Weather Alerts
Small Craft Advisory
Issued: 6:35 PM May. 21, 2025 – National Weather Service
...SMALL CRAFT ADVISORY REMAINS IN EFFECT UNTIL MIDNIGHT EDT TONIGHT... * WHAT...East winds 10 to 20 kt with gusts up to 25 kt. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, Chesapeake Bay north of Sandy Point MD, Patapsco River including Baltimore Harbor, Chester River to Queenstown MD, and Patuxent River to Broomes Island MD. * WHEN...Until midnight EDT tonight. * IMPACTS...Conditions will be hazardous to small craft. PRECAUTIONARY/PREPAREDNESS ACTIONS... Inexperienced mariners, especially those operating smaller vessels, should avoid navigating in hazardous conditions. &&
Coastal Flood Advisory
Issued: 6:22 PM May. 21, 2025 – National Weather Service
...COASTAL FLOOD ADVISORY REMAINS IN EFFECT FROM 6 PM THIS EVENING TO 1 AM EDT THURSDAY... * WHAT...Up to one foot of inundation above ground level expected in low-lying areas near shorelines and tidal waterways. * WHERE...Westmoreland and Northumberland Counties. * WHEN...From 6 PM this evening to 1 AM EDT Thursday. * IMPACTS...Shallow flooding is expected in the most vulnerable locations near the waterfront and shoreline resulting in a low threat of property damage. Expect up to one foot of water above ground level in low lying, vulnerable areas. Some roads and low lying property including parking lots, parks and lawns near the waterfront will experience shallow flooding. 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. LEWISETTA VA MLLW CATEGORIES - MINOR 3.0 FT, MODERATE 3.5 FT, MAJOR 4.0 FT MHHW CATEGORIES - MINOR 1.5 FT, MODERATE 2.0 FT, MAJOR 2.5 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/08 PM 3.1 1.6 1.8 1 MINOR 22/09 AM 2.8 1.3 1.4 1 NONE 22/10 PM 2.5 1.0 0.9 1 NONE 23/10 AM 2.3 0.8 0.9 1 NONE 23/11 PM 2.6 1.1 0.9 1 NONE 24/11 AM 2.3 0.8 0.9 1 NONE DAHLGREN/COLONIAL BEACH VA MLLW CATEGORIES - MINOR 3.5 FT, MODERATE 5.0 FT, MAJOR 7.0 FT MHHW CATEGORIES - MINOR 1.6 FT, MODERATE 3.1 FT, MAJOR 5.1 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/10 PM 3.6 1.7 1.9 1 MINOR 22/10 AM 3.1 1.2 1.5 1 NONE 23/12 AM 2.8 0.9 0.9 1 NONE 23/11 AM 2.4 0.5 0.8 1 NONE 24/12 AM 2.6 0.7 0.6 1 NONE WINDMILL POINT VA MLLW CATEGORIES - MINOR 3.0 FT, MODERATE 3.5 FT, MAJOR 4.0 FT MHHW CATEGORIES - MINOR 1.6 FT, MODERATE 2.1 FT, MAJOR 2.6 FT TOTAL TOTAL DEPARTURE DAY/TIME TIDE TIDE FROM NORM WAVES FLOOD FT MLLW FT MHHW FT FT IMPACT -------- --------- --------- --------- ------- -------- 21/06 PM 3.1 1.7 1.8 1 MINOR 22/07 AM 2.8 1.4 1.5 1 NONE 22/07 PM 2.3 0.9 0.9 1 NONE 23/08 AM 2.0 0.6 0.7 1 NONE 23/08 PM 2.2 0.8 0.7 1 NONE 24/09 AM 2.0 0.6 0.7 1 NONE &&
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