Catastrophic Flooding Persists in Hawaii; Upcoming Pattern Shift to Bring Heavy Mountain Snow to the West

A Kona Low is pulling in deep tropical moisture across the Hawaiian Islands, and producing heavy rain with significant flooding and potential for landslides. Two powerful Gulf of Alaska storms will produce areas of heavy snow and gusty winds, including a broad area of blizzard conditions across southeastern Alaska. These Alaska storms will shift to the western U.S. with heavy mountain snow.
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Last Update: 308 PM PST Tue Dec 7 2021

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Seattle, WA Local Forecast Office

29NM NNW Seattle WA

Marine Zone Forecast

...SMALL CRAFT ADVISORY IN EFFECT FROM 1 AM PST WEDNESDAY THROUGH

Synopsis: A vigorous cold front will arrive tonight and Wednesday. Another strong weather system is likely to reach the area late in the week into this weekend, with hazardous conditions expected across area waters with each system.

Tonight
S wind 5 to 15 kt becoming W 15 to 25 kt after midnight. Wind waves 2 ft or less building to 2 to 4 ft after midnight. A chance of rain in the evening then rain likely after midnight.
Wed
W wind 20 to 30 kt easing to 15 to 25 kt in the afternoon. Wind waves 3 to 5 ft. Rain likely in the morning then a chance of rain in the afternoon.
Wed Night
Variable wind 5 to 15 kt. Wind waves 2 ft or less. A chance of rain.
Thu
S wind to 10 kt in the morning becoming light. Wind waves 1 ft or less in the morning becoming less than 1 ft.
Thu Night
Light wind. Wind waves less than 1 ft.
Fri
S wind to 10 kt. Wind waves 1 ft or less.
Fri Night
S wind 15 to 20 kt rising to 20 to 25 kt after midnight. Wind waves 2 to 4 ft.
Sat
S wind 20 to 30 kt easing to 5 to 15 kt. Wind waves 3 to 5 ft subsiding to 2 ft or less.
Sun
S wind 5 to 15 kt. Wind waves 2 ft or less.
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Last Update: 308 PM PST Tue Dec 7 2021
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