Significant Snowfall for Washington Cascades and Northern Rocky Mountains

A cold front will linger for several days from the Pacific Northwest to portions of the northern Plains early this week. Cold temperatures and copious moisture will combine to produce several feet of snow into the mountain passes, with up to 4 feet of snow down to 4000 feet in the northern Rockies. Travel through mountain passes will be very difficult.
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Last Update: 330 AM CST Mon Dec 18 2017

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8NM SSE Gulfport MS

Marine Zone Forecast

...DENSE FOG ADVISORY IN EFFECT UNTIL 9 AM CST THIS MORNING...

Synopsis: A front has stalled well north of the coast. The next area of low pressure is expected to move east across the lower Mississippi Valley and southeast states Tuesday night into Wednesday morning which should push a weak cold front into the coastal waters on Wednesday but stall it out once again. High pressure will then move east across the region Wednesday night into Thursday. Another cold front is expected to move into the southern plains on Friday.

Today
Northeast winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds. Widespread dense fog early in the morning. Showers likely and chance of thunderstorms in the morning. Chance of showers in the afternoon.
Tonight
East winds near 5 knots. Waves less than 1 foot. Dominant period 4 seconds. Patchy fog.
Tuesday
Southeast winds 5 to 10 knots. Waves 1 foot or less. Dominant period 4 seconds. Patchy fog early in the morning. Slight chance of showers through the day.
Tuesday Night
South winds 10 to 15 knots. Waves 1 to 2 feet. Dominant period 4 seconds. Chance of showers.
Wednesday
West winds 10 to 15 knots. Waves 2 to 4 feet. Dominant period 4 seconds. Slight chance of thunderstorms early in the morning. Showers likely in the morning, then slight chance of showers in the afternoon.
Wednesday Night
North winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Thursday
Northeast winds near 5 knots becoming southeast in the late morning and afternoon. Waves 1 foot or less. Dominant period 4 seconds.
Thursday Night
Southeast winds 5 to 10 knots. Waves 1 to 2 feet. Dominant period 4 seconds.
Friday
South winds 10 to 15 knots. Waves 2 to 4 feet. Chance of showers.
Friday Night
Southwest winds 10 to 15 knots becoming west after midnight. Waves 2 to 4 feet. Showers likely.
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ABOUT THIS FORECAST

Last Update: 330 AM CST Mon Dec 18 2017
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