Heavy Precipitation for Pacific Northwest; Heavy Snow Diminishing across New England

Multiple rounds of heavy to excessive rainfall, mountain snow and gusty winds will impact the Northwest U.S. into the central and northern Rockies this week. Urban, small stream, and moderate to isolated major river flooding are also expected across the Cascades through mid-week. Meanwhile, the heavy snow threat across the Northeast will finally diminish this evening.
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Hazardous Weather Conditions

Last Update: 252 AM PST Tue Dec 5 2023

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Portland, OR Local Forecast Office

7NM SW Cape Lookout OR

Marine Zone Forecast

...GALE WARNING IN EFFECT UNTIL 10 AM PST THIS MORNING...
...HAZARDOUS SEAS WARNING IN EFFECT FROM 10 AM PST THIS MORNING THROUGH WEDNESDAY AFTERNOON...

Today

S wind 20 to 25 kt with gusts to 35 kt, becoming SW 15 to 20 kt with gusts to 25 kt in the afternoon. Combined seas 16 ft with a dominant period of 13 seconds in the morning. Rain.

Tonight

N wind 10 to 15 kt. Wind waves N 2 ft at 4 seconds. Swell W 18 ft at 17 seconds. Rain.

Wed

N wind 10 to 15 kt, becoming NW 5 to 10 kt in the afternoon. Wind waves NW 2 ft at 4 seconds. Swell W 15 ft at 15 seconds. Rain in the morning, then showers and a slight chance of tstms in the afternoon.

Wed Night

SW wind 10 to 15 kt with gusts to 20 kt, becoming W 15 to 20 kt with gusts to 25 kt after midnight. Wind waves W 3 ft at 5 seconds. Swell W 13 ft at 14 seconds. Showers and a slight chance of tstms.

Thu

E wind 15 to 20 kt with gusts to 25 kt, becoming NW 20 to 25 kt with gusts to 30 kt in the afternoon. Wind waves E 4 ft at 4 seconds, shifting to the NW 5 ft at 6 seconds in the afternoon. Swell W 12 ft at 13 seconds. Showers and a slight chance of tstms.

Thu Night

SW wind 15 to 20 kt with gusts to 30 kt, becoming W 10 to 15 kt with gusts to 20 kt after midnight. Wind waves W 3 ft at 5 seconds. Swell W 11 ft at 12 seconds. Showers and a slight chance of tstms.

Fri

S wind 5 to 10 kt with gusts to 15 kt, becoming SE 20 to 25 kt with gusts to 30 kt. Wind waves S 3 ft at 5 seconds. Swell W 9 ft at 12 seconds.

Sat

S wind 20 to 25 kt with gusts to 40 kt, becoming W 10 to 15 kt with gusts to 25 kt. Combined seas 13 ft with a dominant period of 12 seconds.