Heavy Rain and Mountain Snow This Week Northwest To Rockies; Heavy Rain May Bring Flooding to Portions of the East Late Week

At least two storm systems will batter the Pacific Northwest into the northern Rockies this week with heavy rain and mountain snow. The first system may bring as much as two feet of snow to the northern Cascades through Wednesday. This first system will then move over the central US by late week and bring heavy to excessive rain to portions of the south and east Thursday into this weekend.
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Last Update: 211 AM PST Tue Dec 11 2018

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Medford, OR Local Forecast Office

21NM S Port Orford OR

Marine Zone Forecast

...HAZARDOUS SEAS WARNING IN EFFECT FROM THIS EVENING THROUGH

Synopsis: An active weather pattern this week will maintain elevated seas with periods of strong gusty winds as several progressively stronger fronts move across the waters. South winds will increase today ahead of a front, with winds strongest north of Cape Blanco. Seas will become wind driven and steep to very steep through this evening. Then seas build and become swell driven through Wednesday morning. A strong front is possible on Friday. Then a very strong front may move into the waters Saturday night. Behind this front, there is potential for the largest swell of the season on Sunday.

Today
S wind 5 to 15 kt...rising to 15 to 20 kt in the late morning and afternoon. Within 5 nm of brookings southward, S wind 5 to 15 kt. Wind waves 3 to 5 ft. W swell 7 to 9 ft at 13 seconds. Rain.
Tonight
S wind 15 to 25 kt...veering to W 10 to 15 kt late in the evening, then...veering to NW 5 to 10 kt after midnight. Wind waves 3 to 5 ft. W swell 9 to 10 ft at 11 seconds...building to 11 to 12 ft at 11 seconds after midnight. Rain through the night. Chance of showers after midnight.
Wed
N wind 5 kt. Wind waves 4 to 5 ft... Subsiding to 3 ft in the afternoon. NW swell 13 to 16 ft at 13 seconds.
Wed Night
NW wind 5 kt...veering to SE after midnight. Wind waves 3 ft in the evening...becoming 2 ft or less. NW swell 13 to 16 ft. Slight chance of rain through the night.
Thu
S wind 10 to 15 kt northern portion and SE 5 to 10 kt brookings southward. Wind waves 2 ft or less...becoming 3 ft in the afternoon. NW swell 11 to 13 ft. Slight chance of rain through the day.
Thu Night
Northern portion, S wind 15 to 20 kt... Rising to 25 kt after midnight. Brookings southward, S wind 10 kt...rising to 15 to 20 kt after midnight. Wind waves 3 to 4 ft...building to 5 to 7 ft after midnight. W swell 12 to 15 ft. Rain likely.
Fri
S wind 30 kt...easing to 20 kt in the afternoon, then... Becoming W 10 kt in the evening...backing to SE after midnight. Wind waves 10 ft...subsiding to 4 to 5 ft. Mixed swell NW 13 to 15 ft and W 12 to 13 ft.
Sat
SE wind 10 to 15 kt...becoming S 25 kt. Wind waves 2 ft or less...becoming 7 ft. Mixed swell W 11 ft and NW 8 ft...subsiding to 8 ft and N 3 ft.
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Last Update: 211 AM PST Tue Dec 11 2018
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