National Weather Service United States Department of Commerce

Heavy snow forecast for parts of Upper Midwest and western Great Lakes

A cold air mass behind a cold front will continue to bring below-normal temperatures across much of the eastern and northern U.S. through Thursday and allow for snow, heavy at times, to fall across parts of the Upper Midwest and western Great Lakes, mainly from central Minnesota to northern Michigan. Winter Storm Warnings and Winter Weather Advisories are in effect across the region.
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Last Update: 840 PM PDT WED APR 16 2014

View Nearby Observations

Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm

Marine Zone Forecast





  • SynopsisAT 8 PM...A 1029 MB HIGH WAS 700 NM WEST OF SAN FRANCISCO...AND A 1001 MB LOW WAS NEAR NEEDLES CALIFORNIA. A COASTAL EDDY WILL CONTINUE THROUGH EARLY FRIDAY. WEAK TO MODERATE ONSHORE FLOW WILL PREVAIL LATER FRIDAY THROUGH SUNDAY.
  • Tonight Wind variable less than 10 kt. Wind waves 2 ft or less. Swell W 2 to 4 ft at 11 seconds.
  • Thu Wind SE 10 kt...becoming S in the afternoon. Wind waves 2 ft or less. Swell W 2 to 3 ft at 10 seconds.
  • Thu Night Wind S 10 kt. Wind waves 2 ft or less. Swell W 2 to 3 ft at 9 seconds. Swell S 3 ft.
  • Fri Wind SE 10 kt with gusts to 15 kt... Becoming SW in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 9 seconds and S 3 ft at 15 seconds.
  • Fri Night Wind W 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft at 10 seconds and S 3 ft at 15 seconds.
  • Sat Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Swell W 2 to 4 ft.
  • Sat Night Wind W 10 kt with gusts to 15 kt in the evening... Becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 3 ft.
  • Sun Wind variable less than 10 kt...becoming W 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft.
  • Sun Night Wind W 10 kt in the evening...becoming variable less than 10 kt. Wind waves 2 ft or less. Mixed swell W 2 to 3 ft and S 3 ft.
  • Mon Wind variable less than 10 kt...becoming SW 10 kt in the afternoon. Wind waves 2 ft or less. Mixed swell W 2 to 4 ft and S 3 ft.
  • Mon Night Wind W 10 kt...becoming SW after midnight. Wind waves 2 ft or less. Swell W 2 to 4 ft.



Additional Forecasts and Information

Zone Area Forecast for Coastal Waters from San Mateo Point to the Mexican Border and out to 30 nm