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 bring below-normal temperatures across much of the eastern and northern U.S. on Wednesday and allow for snow, heavy at times, to develop 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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Hazardous Weather Conditions

Last Update: 1041 AM EDT WED APR 16 2014

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Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM

Marine Zone Forecast

SEAS ARE PROVIDED AS A RANGE OF THE AVERAGE HEIGHT OF THE HIGHEST 1/3 OF THE WAVES...ALONG WITH THE OCCASIONAL HEIGHT OF THE AVERAGE HIGHEST 10 PERCENT OF THE WAVES.


  • SynopsisA STATIONARY FRONT WILL MOVE LITTLE THROUGH THIS AFTERNOON ACROSS THE FLORIDA STRAITS. THE FRONT WILL THEN MOVE BACK THROUGH SOUTH FLORIDA LATE TONIGHT INTO THURSDAY AS A WARM FRONT. THIS WILL ALLOW FOR SHOWERS AND EVEN A FEW THUNDERSTORMS OVER THE LOCAL WATERS LATE TONIGHT INTO THURSDAY. ADDITIONALLY A SMALL NORTHEAST SWELL WILL ALSO AFFECT THE PALM BEACH WATERS LATE TONIGHT INTO THURSDAY.



    .GULF STREAM HAZARDS...SEAS BUILDING TO 7 FEET IN THE PALM BEACH WATERS THURSDAY.

    THE APPROXIMATE LOCATION OF THE WEST WALL OF THE GULF STREAM AS OF APR 14, 2014 AT 1200 UTC...

    5 NAUTICAL MILES NORTH NORTHEAST OF FOWEY ROCKS. 14 NAUTICAL MILES EAST NORTHEAST OF PORT EVERGLADES. 17 NAUTICAL MILES SOUTH SOUTHEAST OF LAKE WORTH. 7 NAUTICAL MILES NORTHEAST OF JUPITER INLET.

    THIS DATA COURTESY OF THE NAVAL OCEANOGRAPHIC OFFICE.
  • Rest Of Today Northeast winds 10 to 15 knots. Seas around 2 feet nearshore and 2 to 4 feet with occasional seas to 5 feet offshore. Dominant period 8 seconds. Bay and inland waters light chop. A chance of showers.
  • Tonight East northeast winds 10 to 15 knots. Seas less than 2 feet nearshore and 2 to 3 feet offshore. Dominant period 3 seconds. Bay and inland waters light chop. A chance of showers through the night. A slight chance of thunderstorms after midnight.
  • Thursday East northeast winds 7 to 12 knots becoming southeast 8 to 13 knots. Seas around 2 feet. Dominant period 3 seconds. Bay and inland waters light chop. A chance of showers and a slight chance of thunderstorms.
  • Thursday Night East southeast winds 10 to 15 knots. Seas around 2 feet. Dominant period 3 seconds. Bay and inland waters light chop. A chance of showers and a slight chance of thunderstorms late in the evening...then a slight chance of showers after midnight.
  • Friday Southeast winds 10 to 15 knots becoming south southwest 7 to 12 knots. Seas around 2 feet. Bay and inland waters light chop. A slight chance of showers in the morning... Then a chance of showers and thunderstorms.
  • Friday Night South southwest winds 5 to 9 knots becoming west 6 to 11 knots after midnight. Seas less than 2 feet. Bay and inland waters light chop. A chance of showers and a slight chance of thunderstorms late in the evening...then a slight chance of showers after midnight.
  • Saturday North northwest winds 11 to 16 knots. Seas 2 to 3 feet. Bay and inland waters light chop.
  • Saturday Night North northeast winds 11 to 16 knots. Seas around 2 feet nearshore and 2 to 3 feet offshore. Bay and inland waters light chop.
  • Sunday North winds 10 to 15 knots. Seas around 2 feet. Bay and inland waters light chop.



Additional Forecasts and Information

Zone Area Forecast for Coastal waters from Chokoloskee to Bonita Beach FL out 20 NM