West Entrance U.S. Waters Strait of Juan de Fuca Marine Forecast
| Tonight...W Wind 35 To 45 Kt. Seas 10 To 14 Ft. Wave Detail: Sw 6 Ft At 9 Seconds And W 14 Ft At 10 Seconds. Showers With A Slight Chance Of Tstms Early This Evening, Then A Chance Of Showers Late This Evening And Early Morning. Showers Late. |
| Thu...W Wind 25 To 30 Kt With Gusts Up To 40 Kt, Easing To 20 To 25 Kt In The Afternoon. Seas 8 To 11 Ft. Wave Detail: W 11 Ft At 11 Seconds. Rain. |
| Thu Night...W Wind 15 To 20 Kt, Easing To 10 To 15 Kt After Midnight. Seas 6 To 9 Ft, Subsiding To 4 To 6 Ft After Midnight. Wave Detail: W 9 Ft At 11 Seconds. Rain. |
| Fri...W Wind 5 To 10 Kt. Seas 3 To 5 Ft. Wave Detail: W 5 Ft At 10 Seconds. Rain. |
| Fri Night...Nw Wind 5 To 10 Kt. Seas 3 To 5 Ft. Wave Detail: W 5 Ft At 9 Seconds. Rain Likely. |
| Sat...Nw Wind 10 To 15 Kt. Seas 3 To 5 Ft. Wave Detail: W 5 Ft At 9 Seconds. A Chance Of Showers. |
| Sat Night...W Wind 15 To 20 Kt, Becoming Ne 5 To 10 Kt After Midnight. Seas 3 To 5 Ft. Wave Detail: W 4 Ft At 8 Seconds. A Chance Of Showers After Midnight. |
| Sun...E Wind 10 To 15 Kt. Seas Around 3 Ft. Wave Detail: E 2 Ft At 4 Seconds And W 2 Ft At 8 Seconds. Showers Likely In The Morning, Then Rain In The Afternoon. |
| Sun Night...Se Wind 15 To 20 Kt. Seas 3 To 5 Ft. Wave Detail: E 3 Ft At 5 Seconds And W 2 Ft At 11 Seconds. Rain. |
| Mon...S Wind 15 To 20 Kt. Seas 5 To 7 Ft. Wave Detail: Se 3 Ft At 4 Seconds And W 6 Ft At 11 Seconds. Rain. |
| Mon Night...S Wind 15 To 20 Kt. Seas 5 To 7 Ft, Building To 8 Ft After Midnight. Wave Detail: Se 4 Ft At 5 Seconds And W 6 Ft At 12 Seconds. Rain. Winds And Seas Higher In And Near Tstms. |
| Area Forecast Discussion National Weather Service Seattle WA 319pm PDT Wednesday Mar 11 2026 Synopsis A cold front will pass over the area this afternoon, bringing breezy winds, lowland rain, and mountain snow. Active pattern will continue with lowland rain and heavy mountain snow through the end of the week and into the weekend as a weak atmospheric river develops. Short Term - Tonight Through Friday A developing cold front offshore will swing across western Washington this afternoon, bringing breezy winds, lowland rain, and heavy mountain snow. The forecast still remains on track for impactful weather this afternoon and evening. Key points can be listed below for various impacts: * WIND: As this cold front moves over the region later this afternoon, south to southwesterly winds will increase over the majority of the area, with wind gusts around 40 to 50 mph expected for much of the area. A Wind Advisory is in effect for all of the lowland areas. Areas along the coast, and especially Whidbey Island Northward may see briefly stronger wind gusts at times, around 55 mph as post frontal winds funnel through the Strait. Breezy winds will peak this evening, and start to slowly subside overnight and into Thursday morning. * SNOW: Heavy mountain snowfall is expected over the next several days as a long duration event. Along with snow occuring in the mountains, those breezy winds will contribute to Blizzard conditions, as a Blizzard Warning is out until Thursday morning. Snow levels will rise this evening, giving a brief transition to rain, most likely at Snoqualmie Pass. Snow levels will then drop down again tonight and into Thursday below pass levels, with a couple of feet of snow expected through Friday, especially at Stevens and Snoqualmie. * RAIN: Lowland rain will continue through Friday as a weak atmospheric river continues pushing precipitation into the area, with most of the Quantitative Precipitation Forecast located in the mountains and along the coast. Could see 1.5 to 3 inches of rain, especially for areas Seattle southward, with generally 0.50 to 1 inch elsewhere throughout the interior areas. See Hydrology ction below for more information about potential river flooding. Long Term - Friday Night Through Wednesday Ensembles showing an upper level ridge building offshore pushing the weak atmospheric river southward. Northwesterly flow develops on Saturday keeping showers around the area, mostly in the Cascades along with mountain snow continuing. Guidance is continuing to show another atmospheric river attempting to move over the ridge into western Washington Sunday/Monday. Snow levels rising upwards to 7000 to 8000 feet with more rain on the way. Uncertainty remains of the ridge will push the river upwards to BC. Will continue to monitor the forecast as it evolves. Mazurkiewicz Marine A strong weather system today will bring strong winds and high seas to the region. Winds will continue to increase this afternoon to Gale Force across area waters today, with Storm Force winds across the Eastern Strait of Juan de Fuca. Seas will also quickly build along the coast today, peaking at around 18-20 feet over the outer coastal waters before quickly receding on Thursday to below 10 feet. Additional systems will cross the waters later this week. A weaker system will move over the waters on Thursday and Friday, with winds shifting to the north Friday morning. Another system will follow on Sunday, bringing potential for SCA (Small Craft Advisory) winds across the coastal waters. Latest guidance suggests seas will remain below 10 ft through the weekend. 15 Hydrology The heavy mountain precipitation but with lower snow level scenario will continue to make river forecasting difficult into Sunday. Quantitative Precipitation Forecast values continuing to trend slightly lower for western Washington has kept most hydrographs below flood stage for area rivers except the Skokomish River. However, the Skokomish River continues to run lower than the latest river forecast. A Flood Watch remains in effect for Mason County for the potential for the Skokomish River to briefly reach minor flood stage by early Thursday, with additional chances for flooding early next week. While the remainder of the river forecasts to not highlight any flooding, plenty of rivers from King county southward will crest in action stage over the next few days. Will be keeping an eye on the scenario developing the first part of next week with the higher snow levels much more conducive to flooding possibilities for the rivers. NOAA Seattle WA Office: Watches - Warnings - Advisories WA...Wind Advisory from 3pm this afternoon to 6am PDT Thursday for City of Seattle-Downtown Everett / Marysville Area- Eastern Kitsap County-Eastern Strait of Juan de Fuca- Eastside-Foothills and Valleys of Central King County- Foothills and Valleys of Pierce and Southern King Counties-Foothills and Valleys of Snohomish and Northern King Counties-Foothills and Valleys of Thurston and Lewis Counties-Foothills and Valleys of the North Cascades- Foothills of the Western and Southern Olympic Peninsula- Grays Harbor County Coast-Island County-Lake Crescent Area Including US 101-Lower Chehalis River Valley- Lowlands of Lewis and Southern Thurston Counties-Lowlands of Pierce and Southern King Counties-Lowlands of Western Skagit and Northwestern Snohomish Counties-Lowlands of Western Whatcom County-Middle Chehalis River Valley- Northern Hood Canal-Northern Washington Coast-Olympia and Southern Puget Sound-Port Townsend Area-San Juan County- Shoreline / Lynnwood / South Everett Area-Southern Hood Canal-Western Strait of Juan de Fuca-Willapa and Black Hills. Winter Weather Advisory until 6pm PDT this evening for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and Northern King Counties-Cascades of Southern King County-Cascades of Whatcom and Skagit Counties. Blizzard Warning from 6pm this evening to 5am PDT Thursday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and Northern King Counties-Cascades of Southern King County-Cascades of Whatcom and Skagit Counties- Olympics. Winter Storm Warning from 5am Thursday to 5am PDT Saturday for Cascades of Pierce and Lewis Counties-Cascades of Snohomish and Northern King Counties-Cascades of Southern King County-Cascades of Whatcom and Skagit Counties- Olympics. Flood Watch from 5pm PDT this afternoon through Thursday afternoon for Foothills of the Western and Southern Olympic Peninsula-Middle Chehalis River Valley-Olympia and Southern Puget Sound-Olympics-Southern Hood Canal- Willapa and Black Hills. PZ...Small Craft Advisory until 2am PDT Thursday for Grays Harbor Bar Gale Warning until 2am PDT Thursday for Admiralty Inlet Central U.S. Waters Strait Of Juan De Fuca- Northern Inland Waters Including The San Juan Islands- Puget Sound and Hood Canal West Entrance USA Waters Strait Of Juan De Fuca. Storm Warning until 2am PDT Thursday for East Entrance U.S. Waters Strait Of Juan De Fuca. Gale Warning until 2am PDT Thursday 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. |
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