Active Weather Alerts
Marine Weather Statement
Issued: 9:02 PM Aug. 13, 2025 – National Weather Service
A Marine Weather Statement has been issued for the following areas... Tidal Potomac from Indian Head to Cobb Island MD... Tidal Potomac from Key Bridge to Indian Head MD... At 501 PM EDT, a strong thunderstorm was located over Mason Neck State Park, moving northeast at 15 knots. PRECAUTIONARY/PREPAREDNESS ACTIONS... Mariners can expect gusty winds to around 30 knots, locally higher waves, and lightning strikes. Boaters should seek safe harbor immediately until this storm passes. &&
Flash Flood Warning
Issued: 7:58 PM Aug. 13, 2025 – National Weather Service
The National Weather Service in Sterling Virginia has issued a * Flash Flood Warning for... Northwestern Arlington County in northern Virginia... Fairfax County in northern Virginia... The Northwestern City of Falls Church in northern Virginia... * Until 700 PM EDT. * At 358 PM EDT, Doppler radar indicated thunderstorms producing heavy rain across the warned area. Between 1 and 2 inches of rain have fallen. The expected rainfall rate is 1 to 2 inches in 30 minutes. Additional rainfall amounts of 1 to 2 inches are possible in the warned area. Flash flooding is ongoing or expected to begin shortly. HAZARD...Flash flooding caused by thunderstorms. SOURCE...Radar. IMPACT...Flash flooding of small creeks and streams, urban areas, highways, streets and underpasses as well as other poor drainage and low-lying areas. * Some locations that will experience flash flooding include... Arlington... Vienna... Falls Church... Pimmit Hills... Mclean... Oakton... Tysons Corner... Wolf Trap... Merrifield... I66 and I495 Interchange... Dunn Loring... West Mclean... Langley... PRECAUTIONARY/PREPAREDNESS ACTIONS... Turn around, don't drown when encountering flooded roads. Most flood deaths occur in vehicles. && FLASH FLOOD...RADAR INDICATED; EXPECTED RAINFALL RATE...1-2 INCHES IN 30 MINUTES
Flood Watch
Issued: 3:57 PM Aug. 13, 2025 – National Weather Service
...FLOOD WATCH IN EFFECT UNTIL 9 PM EDT THIS EVENING... * WHAT...Flash flooding caused by excessive rainfall is possible. * WHERE...Portions of DC, including the following , District of Columbia, Maryland, including the following areas, Anne Arundel, Cecil, Central and Southeast Howard, Central and Southeast Montgomery, Northern Baltimore, Northwest Harford, Prince Georges, Southeast Harford and Southern Baltimore, and northern Virginia, including the following areas, Arlington/Falls Church/Alexandria and Fairfax. * WHEN...Until 9 PM EDT this evening. * IMPACTS...Excessive runoff may result in flooding of rivers, creeks, streams, and other low-lying and flood-prone locations. Flooding may occur in poor drainage and urban areas. * ADDITIONAL DETAILS... - Thunderstorms are likely this afternoon into this evening with heavy rainfall within a short period of time. Localized rainfall amounts around 1 to 2 inches within an hour are likely. Multiple rounds of storms are possible with total rainfall amounts around 2 to 4 inches. This may cause creeks and small streams to rise out of their banks with flash flooding possible. - Please visit www.weather.gov/safety/flood for flood safety and preparedness information PRECAUTIONARY/PREPAREDNESS ACTIONS... You should monitor later forecasts and be prepared to take action should Flash Flood Warnings be issued. &&
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