Active Weather Alerts
Severe Thunderstorm Warning
Issued: 10:13 PM Aug. 17, 2025 – National Weather Service
The National Weather Service in Sterling Virginia has issued a * Severe Thunderstorm Warning for... West central Howard County in central Maryland... Montgomery County in central Maryland... Southeastern Frederick County in north central Maryland... Northeastern Loudoun County in northern Virginia... North central Fairfax County in northern Virginia... * Until 700 PM EDT. * At 612 PM EDT, severe thunderstorms were located along a line extending from near Ballenger Creek to near Point Of Rocks to near Leesburg, moving east at 25 mph. HAZARD...60 mph wind gusts. SOURCE...Radar indicated. IMPACT...Damaging winds will cause some trees and large branches to fall. This could injure those outdoors, as well as damage homes and vehicles. Roadways may become blocked by downed trees. Localized power outages are possible. Unsecured light objects may become projectiles. * Locations impacted include... Germantown, Rockville, Gaithersburg, Reston, Leesburg, Olney, Damascus, Lansdowne, Lowes Island, Poolesville, Aspen Hill, Potomac, Ashburn, Montgomery Village, Sterling, North Potomac, Redland, Wolf Trap, Great Falls, and Countryside. PRECAUTIONARY/PREPAREDNESS ACTIONS... Prepare immediately for damaging winds. People outside should move immediately to shelter inside a strong building. Stay away from windows. && HAIL THREAT...RADAR INDICATED; MAX HAIL SIZE...<.75 IN; WIND THREAT...RADAR INDICATED; MAX WIND GUST...60 MPH
Small Craft Advisory
Issued: 5:44 PM Aug. 17, 2025 – National Weather Service
...SMALL CRAFT ADVISORY IN EFFECT FROM 6 AM TO 6 PM EDT MONDAY... * WHAT...North winds around 10 kt with gusts up to 20 kt expected. * WHERE...Tidal Potomac River from Key Bridge to Cobb Island MD, Patapsco River including Baltimore Harbor, and Patuxent River to Broomes Island MD. * WHEN...From 6 AM to 6 PM EDT Monday. * 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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