National Weather Service United States Department of Commerce

Heavy rain and mountain snow across the northwestern U.S. this weekend

A Pacific storm system will continue to impact the Pacific Northwest through late Sunday. Heavy rainfall could lead to flash flooding, river and small stream flooding, as well as mudslides and debris flows, especially over burn scars. At higher elevations, strong winds and heavy snowfall, with accumulations of 1 to 3 feet, could result in hazardous travel through mountain passes.
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Hazardous Weather Conditions

Last Update: 621 PM EST SUN DEC 21 2014

View Nearby Observations

Fire Island Inlet NY to Moriches Inlet NY out 20 nm

Marine Zone Forecast





  • SynopsisHIGH PRESSURE REMAINS NORTHEAST THROUGH MONDAY NIGHT AS LOW PRESSURE APPROACHES FROM THE SOUTH. THE WAVE OF LOW PRESSURE WEAKENS WHILE MOVING NORTH TUESDAY AND TUESDAY NIGHT. A MORE SIGNIFICANT STORM SYSTEM AFFECTS THE AREA TUESDAY NIGHT THROUGH EARLY CHRISTMAS DAY WITH A COLD FRONT PASSING THROUGH LATE WEDNESDAY NIGHT INTO THURSDAY MORNING. HIGH PRESSURE BUILDS IN LATE THURSDAY THROUGH FRIDAY.
  • Tonight N winds 5 to 10 kt. Seas around 2 ft. A slight chance of light rain early this evening...then a slight chance of flurries late this evening.
  • Mon E winds around 10 kt. Seas around 2 ft. A chance of rain in the afternoon.
  • Mon Night E winds around 10 kt. Seas 2 to 3 ft. A chance of rain.
  • Tue E winds around 10 kt. Seas 2 to 4 ft...building to 4 to 6 ft in the afternoon. A chance of rain.
  • Tue Night SE winds 5 to 10 kt. Seas 4 to 6 ft. Rain likely.
  • Wed SE winds 10 to 15 kt...becoming S 15 to 20 kt in the afternoon. Seas 4 to 7 ft...building to 6 to 9 ft in the afternoon. Rain. Vsby 1 to 3 nm.
  • Wed Night S winds 20 to 25 kt with gusts up to 35 kt. Seas 8 to 11 ft. Rain. Vsby 1 to 3 nm.
  • Thu W winds 20 to 25 kt with gusts up to 40 kt...diminishing to 15 to 20 kt after midnight. Seas 7 to 10 ft...subsiding to 4 to 7 ft after midnight. A chance of rain in the morning.
  • Fri W winds 15 to 20 kt...diminishing to 10 to 15 kt in the afternoon...then becoming SW 5 to 10 kt. Seas 4 to 6 ft...subsiding to 2 to 4 ft.



Additional Forecasts and Information

Zone Area Forecast for Fire Island Inlet NY to Moriches Inlet NY out 20 nm
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