Cool and Dry in the East; Turning Stormy in the Northwest

Much cooler temperatures behind a cold front will bring a feeling of fall to the East Coast today. In addition, an active fall storm pattern developing in the Pacific Northwest this week will bring areas of heavy rain and high elevation snow. Northern California will benefit from rainfall this week that will aid firefighters given the recent large wildfires.
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Last Update: 231 PM PDT Tue Oct 17 2017

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Portland, OR Local Forecast Office

48NM SW Long Beach WA

Marine Zone Forecast


...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT UNTIL 9 PM PDT THIS EVENING...
...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH WEDNESDAY EVENING...
Synopsis: A weakening cold front will push across the waters this morning. A much stronger frontal storm system arrives Wed and Thu, with southerly gales expected. Seas will likely reach 20 ft Thu night. Another strong strong front will arrive on Sat.

Tonight
NW wind 10 kt with gusts to 15 kt, then becoming S 10 to 15 kt with gusts to 20 kt after midnight. Wind waves NW 2 ft at 4 seconds, then shifting to the S 3 ft at 4 seconds after midnight. W swell 10 ft at 11 seconds, subsiding to 7 ft at 11 seconds after midnight. Chance of rain early. Rain likely after midnight.
Wed
S wind 25 to 30 kt with gusts to 40 kt. Combined seas 9 ft with a dominant period of 10 seconds, building to 15 ft with a dominant period of 9 seconds in the afternoon. Rain.
Wed Night
S wind 30 to 35 kt with gusts to 40 kt, becoming SW 20 to 25 kt with gusts to 30 kt after midnight. Combined seas 16 ft with a dominant period of 11 seconds in the evening. Rain.
Thu
SW wind 20 to 25 kt. Wind waves SW 5 ft at 7 seconds. W swell 12 ft at 11 seconds, building to 18 ft at 16 seconds in the afternoon. Showers and a slight chance of tstms.
Thu Night
SW wind 15 to 20 kt with gusts to 25 kt. Wind waves SW 4 ft at 6 seconds. W swell 22 ft at 17 seconds. Showers and a slight chance of tstms.
Fri
W wind 15 to 20 kt with gusts to 25 kt. Wind waves 4 ft. W swell 18 ft. Showers likely.
Fri Night
SW wind 10 to 15 kt with gusts to 20 kt. Wind waves 3 ft. W swell 14 ft. Rain.
Sat
S wind 25 to 30 kt with gusts to 35 kt. Combined seas 17 ft.
Sun
SW wind 10 to 15 kt. Wind waves 3 ft. W swell 13 ft.
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Last Update: 231 PM PDT Tue Oct 17 2017
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