Heavy Rain and Mountain Snow For the West Coast; Lake Effect Snow in the Great Lakes

A series of Pacific storms will deliver multiple rounds of heavy rain and mountain snow Wednesday into the Thanksgiving holiday weekend. There is an elevated concern for flash flooding, mudslides and debris flows near wildfire burn scars in California. A weak storm system will cross the Great Lakes Wednesday with accumulating Lake Effect snow.
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Last Update: 248 PM PST Tue Nov 20 2018

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Portland, OR Local Forecast Office

17NM SSW Newport OR

Marine Zone Forecast


...SMALL CRAFT ADVISORY FOR WINDS IN EFFECT FROM MIDNIGHT PST TONIGHT THROUGH WEDNESDAY AFTERNOON...
...SMALL CRAFT ADVISORY FOR HAZARDOUS SEAS IN EFFECT FROM WEDNESDAY MORNING THROUGH LATE WEDNESDAY NIGHT...
...GALE WATCH IN EFFECT FROM LATE WEDNESDAY NIGHT THROUGH THURSDAY AFTERNOON...
Synopsis: A moderate frontal system will move across the waters tonight and Wednesday. A stronger system is likely on Thursday and will bring gale force winds and seas in the mid to upper teens. A period of calmer winds is possible over the weekend, but seas will likely remain elevated.

Tonight
SE wind 5 to 10 kt with gusts to 15 kt, rising to 15 to 20 kt with gusts to 25 kt. Wind waves SE 4 ft at 4 seconds. W swell 3 ft at 12 seconds. Rain likely.
Wed
SE wind 15 to 20 kt with gusts to 25 kt, becoming S 10 to 15 kt with gusts to 20 kt in the afternoon. Wind waves S 4 ft at 5 seconds. W swell 9 ft at 14 seconds. Rain.
Wed Night
S wind 10 to 15 kt. Gusts to 20 kt in the evening. Wind waves S 3 ft at 4 seconds. W swell 10 ft at 13 seconds. Rain likely.
Thu
S wind 25 to 30 kt with gusts to 40 kt. Combined seas 14 ft with a dominant period of 12 seconds. Rain.
Thu Night
SW wind 20 to 25 kt, easing to 15 to 20 kt after midnight. Wind waves SW 5 ft at 7 seconds. W swell 12 ft at 11 seconds. Showers.
Fri
W wind 15 kt with gusts to 20 kt. Wind waves 4 ft. W swell 12 ft. Rain.
Fri Night
W wind 15 to 20 kt. Wind waves 3 ft. W swell 11 ft. Chance of rain.
Sat
S wind 10 to 15 kt. Wind waves 3 ft. W swell 10 ft.
Sun
SE wind 5 to 10 kt. Wind waves 3 ft. W swell 8 ft.
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ABOUT THIS FORECAST

Last Update: 248 PM PST Tue Nov 20 2018
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