13 hours ago · The National Weather Service prepares its forecasts and other services in collaboration with agencies like the US Geological Survey, US Bureau of Reclamation, US Army Corps of Engineers, Natural Resource Conservation Service, National Park Service, ALERT Users Group, Bureau of Indian Affairs, and many state and local emergency managers across ...

DOCK, VA - POTOMAC RIVER - LWX. :hurricanes. Forecast errors of two feet or more are possible during. :major surge events. Other sources of error may include rainfall. :forecast uncertainties and hydrologic/hydraulic model uncertainties. :...END of MESSAGE...

3 days ago · Tidal Potomac River and Maryland portion of Chesapeake Bay. Forecasts of wave heights do not include effects of wind direction relative to tidal currents. Expect higher waves when winds are blowing against the tidal flow. Waves flat where waters are iced over. SYNOPSIS FOR THE TIDAL POTOMAC AND MD PORTION OF THE CHESAPEAKE BAY.

Lat: 39.17°N Lon: 77.17°W Elev: 495ft. Mostly clear, with a low around 21. Northeast wind 5 to 8 mph becoming calm after midnight. Increasing clouds, with a high near 40. Light southeast wind becoming south 5 to 9 mph in the morning. Mostly cloudy, with a low around 33. Southwest wind around 6 mph. Partly sunny, with a high near 58.

US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service Middle Atlantic RFC 328 Innovation Boulevard Suite 330 State College, PA 16803 814-954-6408 Comments? Questions? Please Contact Us.

Dec 24, 2024 · For safety concerns, mariners should be aware of the weather over a larger area. Forecast information for a larger area can be found within the zone forecast and the NDFD graphics.

Jan 28, 2025 · Waves 1 to 2 ft. WED W winds 15 kt...becoming NW late. Gusts up to 25 kt. Waves 2 to 3 ft. WED NIGHT NW winds 10 to 15 kt with gusts to 25 kt. Waves 2 to 3 ft. THU NW winds 5 to 10 kt...becoming S in the afternoon. Waves 1 ft. THU NIGHT S winds 10 to 15 kt. Waves 1 ft. A chance of rain. FRI SW winds 10 to 15 kt...becoming NW after midnight.

Jan 6, 2025 · NW winds 5 to 10 kt. Waves 1 ft. A chance of snow after midnight. Map function requires Javascript and a compatible browser.

5 days ago · ANZ536-260900- Tidal Potomac from Indian Head to Cobb Island- 634 PM EST Sat Jan 25 2025 TONIGHT SW winds 10 kt. Waves 1 ft. SUN W winds 5 to 10 kt. Waves 1 ft. SUN NIGHT W winds around 5 kt. Waves 1 ft. MON SW winds 5 to 10 kt. Waves 1 ft. MON NIGHT SW winds 10 to 15 kt with gusts to 20 kt. Waves 1 ft. TUE W winds 5 to 10 kt with gusts to 20 ...

National Weather Service to provide additional forecast and warning services along the Potomac River starting August 12th! Beginning August 12th, daily river forecasts will be issued for the Potomac River at Edwards Ferry, affecting adjacent portions of Loudoun County, VA and Montgomery County, MD.