Arctic Air Plunges into the Great Lakes, Northeast and Mid-Atlantic

Arctic air dropping through the northern and eastern U.S. and a storm off the east coast will bring periods of snow, very cold wind chills and hazardous traveling conditions from the Upper Great Lakes to the Northeast. Meanwhile in southern California, Santa Ana winds will decrease but hot, dry air will remain over the area with elevated fire weather conditions.
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Hazardous Weather Conditions

Last Update: 325 PM CST Wed Dec 13 2017

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62NM SW Grand Isle LA

Marine Zone Forecast


Synopsis: High pressure will move east through the week. A cold front will move through the coastal waters Thursday night and stall offshore Friday before returning inland as a warm front Saturday. Another cold front will move through Sunday and could stall offshore for a short time before another reinforcing front moves through the gulf Monday or Tuesday.

Tonight
West winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Thursday
West winds 5 to 10 knots. Seas 1 to 2 feet. Dominant period 4 seconds.
Thursday Night
Northwest winds 10 to 15 knots. Seas 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Friday
North winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 4 seconds. Chance of showers.
Friday Night
Northeast winds 15 to 20 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Dominant period 5 seconds.
Saturday
East winds 15 to 20 knots. Seas 2 to 4 feet. Dominant period 4 seconds. Slight chance of showers in the afternoon.
Saturday Night
Southeast winds 20 to 25 knots. Seas 3 to 5 feet. Dominant period 5 seconds. Seas building to 3 to 6 feet with occasional seas to 8 feet after midnight. Chance of showers.
Sunday
Southwest winds 15 to 20 knots. Seas 3 to 6 feet with occasional seas to 8 feet. Dominant period 6 seconds. Showers and slight chance of thunderstorms.
Sunday Night
West winds 10 to 15 knots. Seas 3 to 6 feet. Dominant period 7 seconds. Showers likely and slight chance of thunderstorms.
Monday
Northwest winds 10 to 15 knots. Seas 3 to 6 feet. Chance of showers and slight chance of thunderstorms.
Monday Night
Northwest winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas to 6 feet. Chance of showers.
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ABOUT THIS FORECAST

Last Update: 325 PM CST Wed Dec 13 2017
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