National Weather Service United States Department of Commerce

Heavy lake-effect snow continues across lower Great Lakes

Another round of heavy lake-effect snow is forecast for the Great Lakes through mid-day Friday. An additional 30 inches or more could fall in some locations, on top of the impressive amounts that have fallen already. This will result in very difficult or nearly impossible travel at times in the heaviest snow bands. The snow should taper off during the morning on Friday.
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Last Update: 418 AM EST FRI NOV 21 2014

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Rhode Island Sound

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...



  • SynopsisGUSTY NW WINDS TODAY. HIGH PRES WILL BUILD OVER THE WATERS SAT THEN MOVE EAST ON SUN. LOW PRES MOVING OVER THE GREAT LAKES WILL BRING RAIN AND GUSTY SOUTH WINDS SUN NIGHT AND MON. THE SYSTEM WILL LIFT NE TOWARD THE CANADIAN MARITIMES ON TUE.

    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 NW winds 20 to 25 kt with gusts up to 30 kt. Seas 4 to 6 ft.
  • Tonight NW winds 15 to 20 kt with gusts up to 30 kt. Seas 2 to 4 ft.
  • Sat W winds 10 to 15 kt with gusts up to 20 kt... Becoming SW 20 to 25 kt with gusts up to 30 kt in the afternoon. Seas 3 to 5 ft.
  • Sat Night SW winds 20 to 25 kt...diminishing to 15 to 20 kt after midnight. Gusts up to 30 kt. Seas 4 to 7 ft.
  • Sun W winds 15 to 20 kt...becoming SW 10 to 15 kt in the afternoon. Gusts up to 25 kt. Seas 4 to 6 ft.
  • Sun Night SW winds around 10 kt...becoming S 15 to 20 kt after midnight. Seas 3 to 5 ft. Rain likely.
  • Mon S winds 15 to 20 kt with gusts up to 25 kt. Seas 5 to 8 ft. Rain likely.
  • Mon Night SW winds 15 to 20 kt. Seas 7 to 10 ft.
  • Tue W winds 10 to 15 kt with gusts up to 25 kt. Seas 5 to 8 ft.
  • Tue Night W winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of showers.

    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.




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 Rhode Island Sound
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