National Weather Service United States Department of Commerce

Cold Front Crossing the Central U.S.

A cold front over the Northern Rockies will move eastward to the Upper Mississippi Valley/Central Plains by Monday. Rain will develop along the boundary over the Upper Midwest and move into the Upper Great Lakes by Monday. Some of the thunderstorms could become severe in portions of Texas through Monday.
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Last Update: 335 AM EDT MON APR 21 2014

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Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT THROUGH LATE TONIGHT...



  • SynopsisA LARGE LOW PRESSURE CENTER OFF THE CAROLINA COAST WILL CONTINUE MOVING SLOWLY NORTHEASTWARD THROUGH TUESDAY. HIGH PRESSURE WILL BUILD INTO OUR REGION OVERNIGHT...RESULTING IN DIMINISHING WINDS AND SEAS. WINDS WILL BECOME OFFSHORE ON TUESDAY AHEAD OF A WEAK COLD FRONT THAT WILL CROSS THE WATERS BY LATE TUESDAY NIGHT. ONSHORE WINDS ARE EXPECTED BY LATE WEDNESDAY INTO THURSDAY AS WEAK HIGH PRESSURE BUILDS TO THE NORTH OF OUR REGION.
  • Today North winds 15 to 20 knots. Seas 6 to 8 feet.
  • Tonight North winds 10 knots...becoming west after midnight. seas 5 to 7 feet.
  • Tuesday Southwest winds 10 knots. Seas 4 to 6 feet.
  • Tuesday Night Southwest winds 15 knots...becoming northwest after midnight. Seas 3 to 5 feet. Isolated showers after midnight.
  • Wednesday Northwest winds 10 to 15 knots...becoming northeast in the afternoon. Seas 2 to 4 feet.
  • Wednesday Night East winds 10 knots. Seas 3 to 4 feet.
  • Thursday Southeast winds 10 to 15 knots. Seas 3 to 4 feet. isolated showers in the morning.
  • Thursday Night South winds 10 to 15 knots. Seas 3 to 4 feet. Isolated showers after midnight.
  • Friday South winds 10 knots. Seas 2 to 3 feet.



Additional Forecasts and Information

Zone Area Forecast for Waters from Altamaha Sound GA to Fernandina Beach FL from 20 to 60 NM