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 West Coast through 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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Last Update: 342 PM EST SAT DEC 20 2014

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Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm

Marine Zone Forecast





  • SynopsisHIGH PRESSURE WILL SLOWLY BUILD SOUTHWESTWARD INTO THE REGION FROM ATLANTIC CANADA THROUGH MONDAY. LOW PRESSURE WILL ORGANIZE OFF THE CAROLINAS MONDAY NIGHT AND MOVE NORTHEASTWARD OFFSHORE ON TUESDAY. MEANWHILE...ANOTHER AREA OF LOW PRESSURE WILL DEVELOP OVER THE OHIO VALLEY AND MOVE NORTHWARD INTO QUEBEC...LEADING TO A STRONG COLD FRONTAL PASSAGE ON THURSDAY NIGHT. HIGH PRESSURE WILL BUILD IN ON FRIDAY AND A WEAKER COLD FRONT MAY APPROACH THE REGION NEXT WEEKEND.
  • Tonight N winds 5 to 10 kt. Seas around 2 ft early this evening...then 1 to 2 ft.
  • Sun N winds 5 to 10 kt. Seas around 2 ft.
  • Sun Night NE winds around 5 kt...increasing to 5 to 10 kt late. Seas 2 to 3 ft.
  • Mon E winds 5 to 10 kt. Seas 2 to 4 ft. Mainly in E swell with a dominant period of 9 seconds. a chance of rain.
  • Mon Night E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. Rain likely.
  • Tue E winds 10 to 15 kt with gusts up to 20 kt. Seas 3 to 5 ft. A chance of rain.
  • Tue Night SE winds 10 to 15 kt. Seas 3 to 5 ft. Rain likely.
  • Wed SE winds 15 to 20 kt...becoming S 20 to 25 kt in the afternoon and evening...then becoming SW after midnight. Seas 5 to 8 ft. Rain through the day...then a chance of showers through the night.
  • Thu W winds 20 to 25 kt...diminishing to 10 to 15 kt. Seas 5 to 8 ft...subsiding to 3 to 5 ft after midnight.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Cape Henlopen to Fenwick Island DE out 20 nm
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