Central U.S. Waters Strait of Juan de Fuca Marine Forecast
| Today...Se Wind 15 To 20 Kt, Easing To 5 To 10 Kt. Waves 3 To 4 Ft. |
| Tonight...W Wind Around 5 Kt, Backing To Se After Midnight. Waves Around 2 Ft Or Less. |
| Mon...E Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Mon Night...E Wind Around 5 Kt. Waves Around 2 Ft Or Less. |
| Tue...Ne Wind Around 5 Kt, Backing To Nw In The Afternoon. Waves Around 2 Ft Or Less. |
| Tue Night...W Wind 15 To 20 Kt, Rising To 20 To 25 Kt After Midnight. Waves 3 To 5 Ft. |
| Wed...W Wind 15 To 20 Kt, Becoming Ne 5 To 10 Kt In The Afternoon. Waves 3 To 5 Ft. A Chance Of Rain. |
| Wed Night...Ne Wind 5 To 10 Kt, Becoming E 15 To 20 Kt After Midnight. Waves 3 To 4 Ft. |
| Thu...Ne Wind 20 To 25 Kt. Waves 3 To 5 Ft. |
| Thu Night...Nw Wind 15 To 20 Kt. Waves 3 To 4 Ft. |
| Area Forecast Discussion National Weather Service Seattle WA 358am PDT Sunday Oct 5 2025 Synopsis High pressures will bring dry and mild weather through early this week. Expect cooler and cloudier weather by midweek with stronger onshore flow. Low pressure will spin offshore over the latter half of the week then shift inland over the weekend. Short Term - Today through Tuesday Dry, north, flow prevails across western WA today with a ridge offshore. We may see patchy low clouds and fog over the south sound and coast, otherwise expect clear skies. Temperature trends will track close to average and in the mid 60s. High pressure shifts inland on Monday with winds turning light offshore. Temperatures will be slightly warmer with highs reaching the lower 70s. The ridge flattens over the region on Tuesday but the low level air mass will remain warm/mild with ongoing offshore flow. The Cascade foothills and valleys will reach the mid 70s for highs with mid 60s to lower 70s elsewhere. The flow will turn onshore Tuesday night as a weak front moves through. We're not seeing too much precipitation with this front with just a trace to a few hundredths if anything. 33 Long Term - Wednesday Through Saturday With a flip to onshore flow, expect cooler and cloudier conditions moving into Wednesday. Thereafter, low pressure will spin offshore Thursday and Friday with generally mild conditions. Some moisture may advect north into western WA for a chance of rain, although ensemble Quantitative Precipitation Forecast is light. Rain chances increase over the weekend as the low eventually shifts inland. 33 Marine High pressure over the coastal waters, with a thermal through building northward along the coast today through Tuesday. As a result, surface flow will turn offshore across area waters at times. Winds in the central and east portions of the Strait of Juan de Fuca will increase early this morning and may approach small craft criteria. However, held off on issuing a Small Craft Advisory as probabilities were not very favorable. Probabilities of exceeding 21 kt in the central Strait are 10-25% for sustained and 20-40% for gusts. As for the eastern Strait, probabilities of exceeding 21 kt are 10-15% for sustained and 40-60% for gusts. Although these probabilities depict low to medium chances, an occasional gust exceeding 21 kt cannot be ruled out. A weakening frontal system will move over the waters on Tuesday and winds will shift more onshore. In addition, this will cause increased northwesterlies across the coastal waters. Latest guidance suggests that winds may meet small craft thresholds. Chances of sustained winds and gusts exceeding 21 kt are 40-60% and 50-80%, respectively. Highest probabilities are for the outer coastal waters. In addition seas will also build on Tuesday to 8-11 ft. Additional weak systems may move across the area waters later in the week. 29 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...None. |
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