Marine Weather Net

Cape Flattery to James Island WA out 10 to 60 NM Marine Forecast


TONIGHT

NW
WINDS
10 - 15
KNOTS

SAT

NW
WINDS
10 - 15
KNOTS

SAT NIGHT

W
WINDS
15 - 20
KNOTS

SUN

NW
WINDS
15 - 20
KNOTS

The Marine Weather Forecast In Detail:
PZZ170 Forecast Issued: 324 PM PDT Fri Nov 01 2024

SMALL CRAFT ADVISORY IN EFFECT UNTIL 3 PM PDT THIS AFTERNOON
Tonight...Nw Wind 10 To 15 Kt. Seas 6 To 7 Ft. Wave Detail: S 3 Ft At 9 Seconds And W 7 Ft At 11 Seconds. Rain Likely Early This Evening, Then A Chance Of Rain Late This Evening.
Sat...Nw Wind 10 To 15 Kt, Backing To W In The Afternoon. Seas 6 To 7 Ft. Wave Detail: S 2 Ft At 8 Seconds, W 6 Ft At 11 Seconds And W 2 Ft At 19 Seconds. A Chance Of Rain In The Morning, Then Rain In The Afternoon.
Sat Night...W Wind 15 To 20 Kt. Seas 6 To 7 Ft, Building To 7 To 10 Ft After Midnight. Wave Detail: W 10 Ft At 10 Seconds And W 3 Ft At 19 Seconds. Rain, Mainly In The Evening.
Sun...Nw Wind 15 To 20 Kt, Becoming W 10 To 15 Kt In The Afternoon. Seas 9 To 13 Ft, Building To 13 To 18 Ft In The Afternoon. Wave Detail: W 2 Ft At 10 Seconds And W 18 Ft At 19 Seconds. A Chance Of Rain.
Sun Night...Sw Wind Around 10 Kt, Becoming S 15 To 20 Kt After Midnight. Seas 15 To 18 Ft, Subsiding To 13 To 16 Ft After Midnight. Wave Detail: W 17 Ft At 18 Seconds. A Chance Of Rain In The Evening, Then Rain After Midnight.
Mon...S Wind 25 To 30 Kt, Veering To W In The Afternoon. Seas 12 To 15 Ft, Building To 16 To 19 Ft In The Afternoon. Wave Detail: Sw 10 Ft At 8 Seconds, W 19 Ft At 15 Seconds And Sw 2 Ft At 15 Seconds. Rain In The Morning, Then Showers In The Afternoon.
Mon Night...Nw Wind 25 To 30 Kt. Seas 21 To 25 Ft, Subsiding To 19 To 23 Ft After Midnight. Wave Detail: W 24 Ft At 15 Seconds. Rain Likely, Mainly In The Evening.
Tue...Nw Wind 20 To 25 Kt, Easing To 15 To 20 Kt In The Afternoon. Seas 15 To 17 Ft, Subsiding To 11 To 13 Ft In The Afternoon. Wave Detail: W 16 Ft At 13 Seconds. A Chance Of Rain.
Tue Night...Nw Wind 10 To 15 Kt, Becoming E 5 To 10 Kt After Midnight. Seas 9 To 10 Ft, Subsiding To 7 To 8 Ft After Midnight. Wave Detail: W 10 Ft At 12 Seconds. A Chance Of Rain.
Wed...Se Wind 5 To 10 Kt. Seas 6 To 7 Ft, Subsiding To 5 Ft In The Afternoon. Wave Detail: W 6 Ft At 12 Seconds. A Chance Of Rain.
Wed Night...Se Wind 5 To 10 Kt. Seas 4 To 6 Ft. Wave Detail: W 5 Ft At 12 Seconds And W 6 Ft At 17 Seconds. A Chance Of Rain.
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Area Forecast Discussion
National Weather Service Seattle WA
256pm PDT Fri Nov 1 2024

Synopsis
Unsettled weather conditions will linger over the weekend with showers continuing. A stronger frontal system will arrive on Monday for more rain, widespread breezy to locally windy conditions, mountain snow and high surf conditions. Slightly drier weather is possible by midweek.

Short Term - Tonight Through Monday
The most contiguous part of the precipitation has moved into the Cascades, with showery and mostly cloudy conditions throughout the rest of Puget Sound. Showers have become more isolated along the coast, with small pockets of embedded heavy rain in them. Some additional light snowfall is possible in the mountains this evening, but have opted to let the present winter weather headlines expire this evening and later tonight.

Expect some isolated showers on Saturday, becoming a little more widespread throughout Puget Sound after noon. Showers will show more evidence of tapering off late Saturday night into early Sunday morning, but conditions will remain cloudy and cool. Showers on Sunday will be more isolated. Highs over the weekend aren't expected to exceed the low 50s with overnight lows in the low to mid 40s.

Changes are still expected on Monday as a stronger weather system arrives and brings more widespread precipitation back to the area. Storm total Quantitative Precipitation Forecast through Monday night suggests another 1 to 2 inches of rain on the coast and north Cascades with a quarter to half inch expected in the lowlands. Some of this moisture will fall as snow in the Cascades as the snow levels look to be between 3500 and 4000 feet on Monday morning, but will be largely rising above pass levels by the afternoon. Winds are also expected to rise with this system. Southerly winds will be strongest along the Pacific coast, eastern Strait of Juan de Fuca, and across the northern interior waters and land areas of western Whatcom and Skagit counties. High surf will also come into play, more of which can be read about in the marine discussion below.

Long Term - Tuesday Through Friday
Upper level ridging will build in over the northeastern Pacific in the wake of Monday's active weather for a downturn in precipitation activity beginning on Tuesday. The ridge axis appears to amplify and positively lean over into the broader PNW region throughout the rest of the mid section of the week for more mild and drier conditions. Temperatures will only see a modest reflection of the ridge, coming up one to two degrees into the mid 50s. By the end of the forecast period, a return to rainy conditions by next weekend is possible, but this is subject to change at this lead time.

Marine
A surface low will continue to track through WA today. Recent buoy observations show 8 to 9 foot seas throughout the coastal zones, so will let the Small Craft Advisories expire this afternoon. Progressing into the first half of the weekend, rather benign marine weather is expected.

By early Sunday morning, seas will gradually increase to above 10 feet as a potent surface low gets closer to the coastal waters. South-southwesterly winds look to increase rapidly over the coastal waters by early Monday morning, along with seas building upwards of 18 to 22 feet (with the highest seas being in the outer water zones). Headlines will likely be needed through the interior waters as well, but there is still some uncertainty regarding the strength and timing of these winds.

A surface high looks to return by the middle of next week, which could bring back benign marine conditions to the area waters.

Hydrology
Persistent rainfall over W WA will allow for rivers area-wide to continue to react accordingly as levels rise. However, for most locations, flooding is not forecast. Sharp rises on the Skokomish River earlier in the day, along with increased model Quantitative Precipitation Forecast values suggest that this river will exceed flood stage this evening. Although that sharp increase has eased slightly this afternoon, latest obs continue to support earlier forecast trend and as such will leave Flood Warning for the Skokomish in place. The amount of time above flood stage seems pretty limited, with the river expected to be back within its banks early Saturday morning. Although rainfall is expected to continue off and on through the weekend, amounts are not expected to fall at such a rate to allow this threat to continue, as the Skokomish is forecast to continue to lower for the remainder of the weekend.

18

NOAA Seattle WA Office: Watches - Warnings - Advisories
WA...Winter Storm Warning until 11pm PDT this evening for West Slopes North Cascades and Passes.

Winter Weather Advisory until 5pm PDT this afternoon for West Slopes North Central Cascades and Passes-West Slopes South Central Cascades and Passes.

PZ...Small Craft Advisory until 3pm PDT this afternoon for
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Grays Harbor Bar.