National Weather Service United States Department of Commerce

Heavy rain and flash flooding possible in the Desert Southwest and Great Lake States this evening and tonight

A slow moving cold front may bring heavy rain and localized flooding Wednesday to portions of the Great Plains. More heavy rain will be possible in the Desert Southwest again Wednesday. Hot temperatures will continue in the Mississippi Valley - and spread up the east coast Wednesday.
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Last Update: 416 AM EDT WED AUG 27 2014

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Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island

Marine Zone Forecast




...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM THIS AFTERNOON THROUGH THURSDAY EVENING...

  • Today SW winds 5 to 10 kt...increasing to 10 to 15 kt this afternoon. Seas 3 to 5 ft. Patchy fog this morning with vsby 1 to 3 nm.
  • Tonight SW winds around 10 kt...becoming W after midnight. Seas 5 to 8 ft. Patchy fog. Vsby 1 to 3 nm.
  • Thu NW winds 10 to 15 kt with gusts up to 20 kt. Seas 6 to 9 ft.
  • Thu Night N winds 10 to 15 kt. Gusts up to 20 kt after midnight. Seas 5 to 8 ft.
  • Fri N winds 10 to 15 kt...becoming E 5 to 10 kt in the afternoon. Seas 3 to 5 ft.
  • Fri Night SE winds 5 to 10 kt. Seas 2 to 4 ft.
  • Sat S winds 5 to 10 kt. Seas 2 to 3 ft.
  • Sat Night SW winds 10 to 15 kt with gusts up to 20 kt. Seas 2 to 3 ft.
  • Sun SW winds around 15 kt with gusts up to 20 kt. Seas 3 to 5 ft.
  • Sun Night SW winds 10 to 15 kt with gusts up to 20 kt. Seas 4 to 6 ft. Patchy fog. A chance of showers and tstms. Vsby 1 to 3 nm.

    winds and seas higher in and near tstms.

    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 Coastal Waters from Montauk NY to Marthas Vineyard extending out to 20 nm South of Block Island
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