Marine Weather Net

Point Grenville to Cape Shoalwater WA out 10 to 60 NM Marine Forecast


TONIGHT

NW
WINDS
5 - 15
KNOTS

FRI

S
WINDS
20 - 30
KNOTS

FRI NIGHT

SE
WINDS
30 - 40
KNOTS

SAT

SE
WINDS
15 - 25
KNOTS

The Marine Weather Forecast In Detail:
PZZ176 Forecast Issued: 329 PM PST Thu Dec 01 2022

SMALL CRAFT ADVISORY IN EFFECT UNTIL 4 PM PST THIS AFTERNOON ...GALE WARNING IN EFFECT FROM LATE TONIGHT THROUGH LATE FRIDAY NIGHT...
Tonight...Nw Wind 5 To 15 Kt Becoming S 15 To 25 Kt After Midnight. Wind Waves 1 To 2 Ft Building To 2 To 4 Ft After Midnight. Nw Swell 9 Ft At 11 Seconds. A Slight Chance Of Rain After Midnight.
Fri...S Wind 20 To 30 Kt Becoming Se 30 To 40 Kt In The Afternoon. Combined Seas 6 To 9 Ft With A Dominant Period Of 10 Seconds Building To 9 To 10 Ft With A Dominant Period Of 10 Seconds In The Afternoon. A Slight Chance Of Rain In The Morning Then Showers And A Slight Chance Of Tstms In The Afternoon.
Fri Night...Se Wind 30 To 40 Kt Easing To 25 To 35 Kt After Midnight. Combined Seas 8 To 9 Ft With A Dominant Period Of 10 Seconds Building To 11 To 14 Ft With A Dominant Period Of 10 Seconds After Midnight. Showers And A Slight Chance Of Tstms.
Sat...Se Wind 15 To 25 Kt. Wind Waves 5 To 7 Ft. W Swell 13 Ft At 10 Seconds Subsiding To 11 Ft At 10 Seconds In The Afternoon.
Sat Night...E Wind 10 To 20 Kt. Wind Waves 1 To 3 Ft. W Swell 8 Ft At 11 Seconds.
Sun...E Wind 5 To 15 Kt. Wind Waves 1 To 3 Ft. W Swell 6 Ft At 10 Seconds.
Sun Night...E Wind To 10 Kt Becoming Sw After Midnight. Wind Waves 1 Ft. Nw Swell 5 Ft At 8 Seconds.
Mon...W Wind To 10 Kt. Wind Waves 1 Ft. Nw Swell 4 Ft.
Tue...Nw Wind To 10 Kt. Wind Waves 1 To 2 Ft. Nw Swell 4 Ft.
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Area Forecast Discussion
National Weather Service Seattle WA
326pm PST Thu Dec 1 2022

Synopsis
A drying trend will persist through the rest of the afternoon. Another system will approach the area Friday into Saturday but will stay further offshore and limit impacts to the Olympic Peninsula. Some moisture will wrap around this low as it drifts south into early next week. A more organized system may arrive by mid to late week.

Short Term - Tonight Through Sunday
Snow showers have largely ended across the area this afternoon. Conditions will be largely dry until the next system moves into the area Friday into Saturday. This system will stay further offshore which will limit the impacts to the Olympic Peninsula. Southeasterly flow will be prevalent across the area Friday into Saturday, which will enhance the snow rates along the eastern slopes of the Olympics and into the Hood Canal area. Areas along the northern peninsula will be sheltered and not receive as much snow. The Cascades will also pick up 1 to 3 inches between Friday morning and Saturday morning.

The question will be how far inland to the Puget Sound lowlands snow showers make it in this time frame. As of now, there is about a 40 to 50 percent chance of at least an inch of new snow Friday morning through Saturday morning for the Seattle area and east, with lesser chances south toward Tacoma and Olympia. The highlight of this system will truly be focused on the eastern Olympics and Hood Canal. As the weekend wraps up, some moisture being brought back up along the periphery of the low drifting south may introduce showers to the area, primarily into areas of Lewis County southward.

Long Term - Monday Through Thursday
Weak ridging follows the weekend and lasts into Monday. For now, this should put a pause on the wintry precipitation as the ridge strengthens over Alaska. A few weak systems diving south off the ridge into the area cannot be ruled out for brief periods of rain and possible snow showers Tuesday through Wednesday.

There are early indications of a more well organized system bringing precipitation back to the area on Thursday. Obviously there is a fair amount of uncertainty regarding precipitation type and timing as this is the day seven time frame, but details will evolve in future model iterations.

Marine
A very weak upper level ridge will start to push onshore this evening as multiple existing headlines will expire. A Small Craft Advisory will remain for the Northern Inland Waters until early tonight, elsewhere expect a brief lull in activity this evening. A low pressure system spinning down from the north will enter into our area waters Friday morning. Southerly winds will increase bringing gale-force winds to all coastal water zones, so have upgraded the Gale Watch to a Gale Warning. This low will move southward, as it does, gradients will tighten within the Strait of Juan De Fuca. Have put out Small Craft Advisories for all portions of the Strait, but will have to be monitored as the potential for some gale-force winds within the Strait may be possible.

Coastal seas within the 8 to 9 feet range this evening, but will build back up into the 12 to 14 feet range Friday into Saturday as the next system pushes through.

Mazurkiewicz

Hydrology
No river flooding is expected over the next 7 days.

NOAA Seattle WA Office: Watches - Warnings - Advisories
WA...Winter Weather Advisory from 10am Friday to 10am PST Saturday for Hood Canal Area.

Winter Storm Warning from 10am Friday to 10am PST Saturday for Olympics.

PZ...Small Craft Advisory until 4pm PST this afternoon for
Central U.S. Waters Strait Of Juan De Fuca-
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm-
East Entrance U.S. Waters Strait Of Juan De Fuca-
West Entrance USA Waters Strait Of Juan De Fuca.

Small Craft Advisory from 4am to 10pm PST Friday for
Central U.S. Waters Strait Of Juan De Fuca-
East Entrance U.S. Waters Strait Of Juan De Fuca-
West Entrance USA Waters Strait Of Juan De Fuca.

Small Craft Advisory until 9pm PST this evening for
Northern Inland Waters Including The San Juan Islands.

Gale Warning from 4am Friday to 1am PST Saturday for
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.