Unsettled Weather Continues in the Northwest; Ice & Snow to Develop Across Parts of the Central U.S.

Unsettled weather will persist across the western U.S. during the next few days with locally heavy coastal rain and mountain snow for much of the Pacific Northwest. Another weather system will affect parts of the Southwest and central United States with snow and mixed precipitation developing from Oklahoma northeastward into the Great Lakes.
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Hazardous Weather Conditions

Last Update: 436 PM AST Tue Jan 21 2020

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San Juan, PR Local Forecast Office

57NM SSW Mayaguez PR

Marine Zone Forecast

...SMALL CRAFT SHOULD EXERCISE CAUTION...

Tonight
Southeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. Northeast swell 4 to 5 feet. Isolated showers through the night.
Wednesday
Southeast winds 10 to 15 knots. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 11 seconds. Northeast swell around 4 feet. Isolated showers.
Wednesday Night
South winds 10 to 15 knots. Seas 2 to 4 feet with occasional seas up to 5 feet. Dominant period 10 seconds. Isolated showers.
Thursday
Southwest winds 10 to 15 knots veering north in the afternoon. Seas 3 to 5 feet with occasional seas up to 6 feet. Dominant period 10 seconds. Scattered showers through the day. Isolated thunderstorms in the afternoon.
Thursday Night
Northeast winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. North swell 4 to 5 feet after midnight. Scattered showers.
Friday
Northeast winds 10 to 15 knots. Seas 5 to 7 feet with occasional seas up to 9 feet. Dominant period 12 seconds. North swell 4 to 7 feet. Isolated showers.
Saturday
Northeast winds 10 to 15 knots. Seas 6 to 8 feet with occasional seas up to 10 feet. Dominant period 13 seconds. North swell 4 to 7 feet. Isolated showers.
Sunday
East winds 10 to 15 knots. Seas 4 to 6 feet with occasional seas up to 8 feet. Dominant period 11 seconds. North swell 4 to 5 feet. Isolated showers.
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ABOUT THIS FORECAST

Last Update: 436 PM AST Tue Jan 21 2020
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