National Weather Service United States Department of Commerce

Active pattern for the Pacific Northwest this week while a coastal low takes aim on the Northeast later this week

Thunderstorms with heavy rainfall is forecast to bring 5 to 7 inches of rainfall, with localized heavier amounts, to the Pacific Northwest throughout the week. Across the higher mountain elevations, measurable snow is likely. The Northeast will also be the focus of showers and thunderstorms beginning mid-week as a coastal low meanders of the Mid-Atlantic coast.
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Last Update: 432 AM EDT TUE OCT 21 2014

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Cape Cod Bay

Marine Zone Forecast





  • SynopsisLOW PRES OVER LAKE ONTARIO WEAKENS AND GIVES WAY TO A NEW AREA OF LOW PRES OFF THE DELAWARE COAST. THIS LOW MAY BECOME A GALE CENTER SOUTH OF NEW ENGLAND WED INTO THU. BY FRI THE LOW WEAKENS AND BEGINS TO MOVE OFFSHORE. BY SAT THE LOW IS IN THE MARITIMES WITH WESTERLY FLOW ACROSS NEW ENGLAND.

    FOR INFORMATION ON POSSIBLE HAZARDOUS WEATHER BEYOND THE 24-36 HOUR FORECAST PERIOD...PLEASE VISIT WWW.WEATHER.GOV/BOSTON AND FOLLOW THE CURRENT HAZARDS LINK ABOVE THE MAP ON THE LEFT.
  • Today SE winds 5 to 10 kt with gusts up to 20 kt. Seas 2 to 3 ft. A slight chance of tstms. A chance of showers this morning...then showers likely this afternoon. Some tstms may produce heavy rainfall. Vsby 1 to 3 nm this afternoon.
  • Tonight E winds 5 to 10 kt...becoming N after midnight. Seas 2 to 3 ft. Patchy fog. A chance of showers. Vsby 1 to 3 nm.
  • Wed NE winds 5 to 10 kt. Seas 2 to 3 ft. Patchy fog. Showers likely. Vsby 1 to 3 nm.
  • Wed Night NE winds 10 to 15 kt. Gusts up to 20 kt in the evening. Seas 2 to 4 ft. Patchy fog. Showers. Vsby 1 to 3 nm.
  • Thu E winds 5 to 10 kt. Seas 2 to 3 ft. Showers.
  • Thu Night N winds 5 to 10 kt. Seas 2 to 4 ft. Showers likely.
  • Fri NW winds 10 to 15 kt with gusts up to 25 kt. Seas 2 to 4 ft. A chance of showers.
  • Fri Night NW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
  • Sat NW winds around 10 kt. Seas around 2 ft.
  • Sat Night W winds 10 to 15 kt. Seas around 2 ft.

    winds and seas higher in and near tstms.

    seas are reported as significant wave height...which is the average of the highest third of the waves. individual wave heights may be more than twice the significant wave height.




WINDS AND SEAS HIGHER IN AND NEAR TSTMS. SEAS ARE REPORTED AS SIGNIFICANT WAVE HEIGHT...WHICH IS THE AVERAGE OF THE HIGHEST THIRD OF THE WAVES. INDIVIDUAL WAVE HEIGHTS MAY BE MORE THAN TWICE THE SIGNIFICANT WAVE HEIGHT.

Additional Forecasts and Information

Zone Area Forecast for Cape Cod Bay
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