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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Last Update: 244 AM PST Mon Dec 18 2017

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Portland, OR Local Forecast Office

9NM SW Newport OR

Marine Zone Forecast

...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH TUESDAY

Synopsis: A weak cold front will stall over the waters this morning. A surface low will form along the stalled frontal boundary and track to the Washington coast. This will bring a strong cold front with gale force winds Tue. A secondary low will move through Wed. Then conditions generally ease and improve for late in the week.

Today
S wind 15 kt, easing to 5 to 10 kt in the afternoon. wind waves S 2 ft at 4 seconds. W swell 7 ft at 11 seconds. chance of rain late.
Tonight
S wind 10 to 15 kt, rising to 20 to 25 kt with gusts to 35 kt after midnight. Combined seas 9 ft with a dominant period of 15 seconds. Chance of rain.
Tue
S wind 30 to 35 kt, becoming SW 25 to 30 kt in the afternoon. Gusts to 45 kt in the late morning and early afternoon. Combined seas 15 ft with a dominant period of 15 seconds. Rain.
Tue Night
W wind 15 to 20 kt. Wind waves W 5 ft at 6 seconds. W swell 15 ft at 14 seconds, subsiding to 11 ft at 14 seconds after midnight. Showers.
Wed
NW wind 20 to 25 kt, easing to 15 to 20 kt in the afternoon. Wind waves NW 4 ft at 5 seconds. W swell 11 ft at 14 seconds. Chance of showers.
Wed Night
NE wind 5 to 10 kt. Wind waves NW 4 ft at 5 seconds. NW swell 13 ft at 14 seconds.
Thu
E wind to 5 kt. Wind waves 1 ft. NW swell 9 ft.
Fri
N wind 5 to 10 kt. Wind waves 2 ft. NW swell 7 ft.
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ABOUT THIS FORECAST

Last Update: 244 AM PST Mon Dec 18 2017
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