Marine Weather Net

James Island to Point Grenville WA out 10 to 60 NM Marine Forecast


TODAY

NW
WINDS
25 - 30
KNOTS

TONIGHT

NW
WINDS
15 - 20
KNOTS

SUN

NW
WINDS
15 - 20
KNOTS

SUN NIGHT

NW
WINDS
10 - 15
KNOTS

The Marine Weather Forecast In Detail:
PZZ173 Forecast Issued: 253 AM PDT Sat Apr 26 2025

SMALL CRAFT ADVISORY IN EFFECT THROUGH SUNDAY AFTERNOON
Today...Nw Wind 25 To 30 Kt, Easing To 20 To 25 Kt This Afternoon. Seas 10 To 13 Ft. Wave Detail: Nw 13 Ft At 9 Seconds And Sw 2 Ft At 17 Seconds.
Tonight...Nw Wind 15 To 20 Kt, Rising To 20 To 25 Kt After Midnight. Seas 9 To 11 Ft. Wave Detail: Nw 10 Ft At 9 Seconds And Sw 2 Ft At 17 Seconds.
Sun...Nw Wind 15 To 20 Kt. Seas 8 To 10 Ft, Subsiding To 7 To 8 Ft In The Afternoon. Wave Detail: Nw 9 Ft At 9 Seconds And Sw 2 Ft At 17 Seconds.
Sun Night...Nw Wind 10 To 15 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And Sw 2 Ft At 18 Seconds.
Mon...Sw Wind 10 To 15 Kt. Seas 5 To 6 Ft. Wave Detail: W 6 Ft At 9 Seconds And Sw 2 Ft At 17 Seconds. Rain Likely.
Mon Night...Sw Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: W 7 Ft At 12 Seconds And S 2 Ft At 19 Seconds. Rain.
Tue...Nw Wind Around 10 Kt. Seas 6 To 8 Ft. Wave Detail: W 7 Ft At 11 Seconds And S 2 Ft At 19 Seconds. A Chance Of Rain In The Morning.
Tue Night...Nw Wind Around 10 Kt. Seas Around 6 Ft. Wave Detail: W 6 Ft At 11 Seconds And S 2 Ft At 18 Seconds.
Wed...Nw Wind 5 To 10 Kt. Seas 5 To 6 Ft. Wave Detail: Nw 5 Ft At 10 Seconds And S 2 Ft At 17 Seconds.
Wed Night...Nw Wind 5 To 10 Kt. Seas 4 To 5 Ft. Wave Detail: Nw 5 Ft At 10 Seconds And S 2 Ft At 17 Seconds.
SHARE THIS PAGE:           
Area Forecast Discussion
National Weather Service Seattle WA
316am PDT Sat April 26 2025

Synopsis
High pressure remains in place through the weekend, with some cooling on Sunday. A weak frontal system will move into the area early in the week for light precipitation, with ridging rebounding in the second half of the week.

Short Term - Today through Monday
Some stratus has made it to the southern coast early this morning, primarily impacting Grays Harbor County. It is unlikely that much more stratus will get any further east than Olympia throughout the rest of the morning. Isolated pockets of lower clouds are possible in portions of Puget Sound but will not be widespread if they develop. Onshore flow will get a bit breezy at times by early this afternoon, primarily in the southwest interior, along the coast and through the Strait of Juan de Fuca. Gusts of 25 to 30 mph are possible through the Strait and along the coast. Temperatures today will still be in the mid to upper 60s across Puget Sound and low to mid 50s along the coast.

A weak low traversing to the south by Sunday will cool things off a bit into the low 60s and upper 50s and keep Washington under split flow aloft. A more zonal flow pattern sets up on Monday and opens the door for the next weak system to arrive Monday night into Tuesday. Quantitative Precipitation Forecast amounts are generally light, under a quarter of an inch with the exception of the coast and north Cascades seeing slightly above a quarter inch. This system has high snow levels, keeping rain in the forecast for all Cascade passes.

Long Term - Tuesday Through Friday
Rain is expected to taper off by late Tuesday morning, with lingering showers in the Cascades. A ridge returns by Wednesday, bringing back warmer temperatures through Thursday where highs could reach the mid 70s. Chances for rain return late next week, but some timing discrepancies between the models right now limit what to expect in terms of rainfall amounts.

21

Marine
Onshore flow pattern will continue through the weekend. High pressure will build over the waters later Sunday, with a weak weather system moving across the waters later Monday into Tuesday. High pressure will rebuild Wednesday.

Small craft advisory westerly winds in the Central and Eastern Strait tonight and again Sunday night.

Small craft advisory northwesterly winds continuing in the outer coastal waters through tonight with small craft advisory seas Sunday.

Small craft advisory seas in the inner coastal waters today, seas

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

NOAA Seattle WA Office: Watches - Warnings - Advisories
WA...None. PZ...Small Craft Advisory until 5am PDT early this morning for
Central U.S. Waters Strait Of Juan De Fuca-
East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 6pm this evening to 6am PDT Sunday for
Central U.S. Waters Strait Of Juan De Fuca-
East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory from 6pm Sunday to 6am PDT Monday for
Central U.S. Waters Strait Of Juan De Fuca-
East Entrance U.S. Waters Strait Of Juan De Fuca.

Small Craft Advisory until 6pm PDT this evening for
Coastal Waters From Cape Flattery To James Island Out 10 Nm-
Coastal Waters From James Island To Point Grenville Out 10 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater Out 10 Nm.

Small Craft Advisory until 6pm PDT Sunday for
Coastal Waters From Cape Flattery To James Island 10 To 60 Nm-
Coastal Waters From James Island To Point Grenville 10 To 60 Nm-
Coastal Waters From Point Grenville To Cape Shoalwater 10 To 60 Nm.