East Entrance U.S. waters Strait of Juan de Fuca Marine Forecast
| Rest Of Today...Se Wind 20 To 25 Kt With Gusts Up To 35 Kt, Rising To 25 To 30 Kt With Gusts Up To 45 Kt This Afternoon. Waves 3 To 5 Ft. Rain Likely Late This Morning, Then A Chance Of Rain Early This Afternoon. Rain Likely Late. |
| Tonight...S Wind 25 To 35 Kt With Gusts Up To 45 Kt, Easing To 15 To 20 Kt After Midnight. Waves 4 To 6 Ft, Subsiding To 3 To 4 Ft After Midnight. Rain In The Evening, Then Showers Likely After Midnight. |
| Wed...S Wind 10 To 15 Kt, Easing To 5 To 10 Kt In The Afternoon. Waves 3 To 4 Ft. Showers Likely, Mainly In The Morning. |
| Wed Night...Sw Wind 5 To 10 Kt, Veering To Nw After Midnight. Waves 3 To 4 Ft In The Evening, Then Around 2 Ft Or Less. |
| Thu...N Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Thu Night...N Wind Around 5 Kt, Becoming Se 10 To 15 Kt After Midnight. Waves Around 2 Ft Or Less. |
| Fri...Se Wind 20 To 25 Kt. Waves 3 To 5 Ft. Rain. |
| Fri Night...Se Wind 20 To 25 Kt. Waves 3 To 5 Ft. Rain. |
| Sat...S Wind 20 To 25 Kt, Becoming W 10 To 15 Kt In The Afternoon. Waves 3 To 5 Ft. Rain. |
| Sat Night...W Wind 15 To 20 Kt, Easing To 10 To 15 Kt After Midnight. Waves 5 To 7 Ft. Showers Likely In The Evening, Then Rain Likely After Midnight. |
| Area Forecast Discussion National Weather Service Seattle WA 934am PDT Tuesday Oct 28 2025 Radar shows some light rain spreading inland this morning with a warm front located offshore. Expect the warm front to lift northward across the area this afternoon, spreading additional light rain across the region before the main band of rain (associated with the cold front) shifts into the region tonight. Winds will increase along the coast this morning, with conditions becoming windy by this afternoon. Updates to the morning forecast include the issuance of wind advisories for areas along the coast and for Whidbey Island, where southerly wind gusts to 45 mph are expected. The remainder of the previous forecast located below, with updates made to the aviation and marine sections. 14 Synopsis A weather system moving into British Columbia will graze the area today through tonight leading to rain along with windy conditions for the coast and North Interior. A break in the weather is expected mid-week. Another atmospheric river is expected to move across Western Washington beginning later Friday with rain and wind impacts lingering into the weekend. Short Term - Today through Thursday A weak upper ridge axis over the area this morning will shift eastward today and a warm front will lift northward across the area late this afternoon. This will spread a little rain onshore before the main band of rain shifts in the region tonight as a trailing cold front sweeps across the area. There'll be a decent east/southeast gradient just ahead of the cold front and wind advisories have posted for portions of the North Interior, San Juans, and Port Townsend area. Rain will turn to showers early Wednesday morning then taper off. There's not much of a post-frontal onshore push so little in the way of convergence activity is expected. Upper ridging starts to rebuild into the area Wednesday afternoon then shifts onshore Thursday morning. Near the surface, ridging over the interior of British Columbia and east of the Cascades will lead to low level offshore flow. The combination of upper ridging and offshore flow will lead to a pleasant day across the area before conditions take sharp turn as we move toward the end of the week. Long Term - Thursday Night Through Monday Clouds will start to increase by Thursday night as a potent frontal system moves into our offshore waters. Recent model runs have slowed the timing of this system somewhat, but have also fallen into somewhat better agreement with the regard to overall expected outcome. Rain is expected to increase Friday night as an atmospheric river initially takes aim at Vancouver Island, the Olympic Peninsula, and northern portions of the Cascades. The tap of moisture is then expected to slowly sag southward across the CWA (County Warning Area) during the day on Saturday. Snow levels are expected to make the jump to 8000 to 9000 feet by Friday evening...meaning the vast majority of the precipitation will fall as rain the mountains. Current storm total max Quantitative Precipitation Forecast for the Olympics and North Cascades is running in the 3 to 4 inch range. In addition the rainfall, windy conditions are expected for portions of the area Friday into Friday night, but widespread wind impacts are not expected with the parent surface low remaining well north of the area. Conditions are expected to remain unsettled into the beginning of next week as the flow turns more zonal and a number of weaker systems move across the area. Beyond that, in typical early November fashion, deterministic models and ensembles are all over the place. Meteorological magic eight ball says "ask again later". 27 Marine A cold front will move across the waters this evening. Wind gusts have already begun to reach gale force, therefore starting the warning now. Easterly winds will continue to increase through the entrances to the Strait this afternoon, particularly the East Strait and up into the Northern Inland Waters where gales are likely tonight. Winds will ease pretty abrupartly behind the frontal passage tonight, though small craft winds will likely continue across the outer portions of the coastal waters through early Wednesday morning. There may be a brief push down the Strait this afternoon but models are keeping the strongest winds along the Canadian side near Race Rocks. Winds will ease area- wide Wednesday morning. High pressure will build behind the front Wednesday and Thursday before a much stronger frontal system will move through the waters Friday into Saturday bringing another round of stronger winds, potentially up to gale force. Current probabilities stand at around 30-50% for gale force winds over the coastal waters. Seas will quickly increase to 8 to 12 ft tonight in conjunction with the gales as the front moves through. Seas ease a bit early Wednesday morning before long period swell arrives along the coast late Wednesday morning generated by the parent low up near Haida Gwaii. Seas will rise to 15 to 20 ft in the inner waters, with 18 to 22 ft expected in the outer waters. The dominant period will be around 15 to 16 seconds. The largest waves will be in the northern portions of the waters. Seas come down Wednesday night into Thursday back to around 6 to 8 ft before rising back up to 12 to 16 ft late Friday into the weekend. Hydrology The next atmospheric river event will begin to impact the area later Friday into Saturday as a moisture plume slowly sags southward across the area with snow levels creeping to near or above 8000 feet. A portion of the models still bring a secondary (albeit lesser) moisture feed into the area Saturday night into Sunday with somewhat lower snow levels. For now, sharp rises are expected on the rivers, but it's early yet to express much confidence in any of them getting above action stage (with the common exception of the Skokomish). Similar to other recent events, this AR activity would also come with the potential for localized flooding in areas of poor/blocked drainage, small creeks and streams, and burn scars. 27 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...Wind Advisory from 2pm this afternoon to midnight PDT tonight for Island County-Lowlands of Western Whatcom County-Port Townsend Area-San Juan County. Wind Advisory until 9pm PDT this evening for Grays Harbor County Coast-Northern Washington Coast. PZ...Small Craft Advisory until 11am PDT this morning 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- West Entrance USA Waters Strait Of Juan De Fuca. Gale Warning until 8am PDT Wednesday 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- West Entrance USA Waters Strait Of Juan De Fuca. Gale Warning until 5am PDT Wednesday for East Entrance U.S. Waters Strait Of Juan De Fuca. Gale Warning from 2pm this afternoon to midnight PDT tonight for Northern Inland Waters Including The San Juan Islands. Small Craft Advisory from 2pm this afternoon to midnight PDT tonight for Admiralty Inlet. |
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