Unsettled Across the West; Increasingly Rainy with a Few Storms in the South

A frontal system will bring heavy precipitation, including mountain snowfall to much of the Pacific Northwest, northern California, and portions of the Rockies through Tuesday. Elsewhere, wet weather will return to much of the South with locally heavy rainfall; a few strong to severe thunderstorms will also be possible in this region by Tuesday.
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Hazardous Weather Conditions

Last Update: 1008 AM AST Mon Dec 18 2017

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San Juan, PR Local Forecast Office

12NM SW Mayaguez PR

Marine Zone Forecast


Rest Of Today
Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds.
Tonight
Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 10 seconds.
Tuesday
East winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 10 seconds.
Tuesday Night
Northeast winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Wednesday
Northeast winds 5 to 10 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Thursday
Northeast winds 5 to 10 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Isolated showers.
Friday
Northeast winds 10 to 15 knots. Seas 1 to 3 feet. Dominant period 7 seconds. Scattered showers.
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ABOUT THIS FORECAST

Last Update: 1008 AM AST Mon Dec 18 2017
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