National Weather Service United States Department of Commerce

Snow for Ohio Valley and northern mid-Atlantic Sunday into Monday

A clipper system will strengthen as it moves from the Midwest to the Ohio Valley on Sunday. Snow, some heavy, will spread from the Ohio Valley into parts of the lower Great Lakes and northern mid-Atlantic Sunday into Monday morning. The heaviest snow is expected from central Ohio into southwest Pennsylvania. Winter Weather Advisories are in effect for many of these locations.
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Last Update: 300 PM PST SAT JAN 24 2015

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Northern Inland Waters Including The San Juan Islands

Marine Zone Forecast





  • SynopsisHIGH PRES WILL BUILD OVER THE AREA TONIGHT WITH SURFACE FLOW BECOMING LIGHT OFFSHORE SUNDAY AND MONDAY. A FRONT WILL ARRIVE TUESDAY WITH SMALL CRAFT ADVISORY SOUTHERLY WINDS OVER MOST WATERS. HIGH PRES WILL REBUILD WEDNESDAY AND THURSDAY.
  • Tonight SE wind 10 to 20 kt becoming 5 to 15 kt. Wind waves 1 to 3 ft. A chance of rain in the evening. Areas of fog after midnight.
  • Sun S wind 5 to 15 kt becoming SW in the afternoon. Wind waves 2 ft or less. Areas of fog in the morning.
  • Sun Night Light wind becoming NW to 10 kt after midnight. Wind waves 1 ft or less. Areas of fog after midnight.
  • Mon Light wind becoming S 5 to 15 kt in the afternoon. Wind waves 2 ft or less.
  • Mon Night S wind 15 to 25 kt. Wind waves 2 to 4 ft.
  • Tue SE wind 15 to 25 kt becoming S 10 to 20 kt in the afternoon. wind waves 1 to 4 ft.
  • Tue Night SW wind 5 to 15 kt. Wind waves 2 ft or less.
  • Wed E wind to 10 kt. Wind waves 1 ft or less.
  • Thu NE wind to 10 kt becoming NW. Wind waves 1 ft or less.



Additional Forecasts and Information

Zone Area Forecast for Northern Inland Waters Including The San Juan Islands
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