East Entrance U.S. waters Strait of Juan de Fuca Marine Forecast
| Tonight...W Wind 25 To 30 Kt, Easing To 10 To 15 Kt Late. Waves 3 To 5 Ft, Subsiding To 2 To 3 Ft Late. |
| Sat...Sw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Sat Night...W Wind 10 To 15 Kt. Waves Around 2 Ft Or Less. |
| Sun...Sw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Sun Night...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Mon...W Wind Around 5 Kt. Waves Around 2 Ft Or Less. |
| Mon Night...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Tue...Sw Wind 5 To 10 Kt, Veering To W In The Afternoon. Waves Around 2 Ft Or Less. |
| Tue Night...W Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Wed...Sw Wind 5 To 10 Kt. Waves Around 2 Ft Or Less. |
| Wed Night...W Wind 10 To 15 Kt. Waves Around 3 Ft. |
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Area Forecast Discussion National Weather Service Seattle WA 855pm PDT Fri July 18 2025 Synopsis A broad upper level trough over Western Canada on Saturday will drop down over Western Washington Sunday and Monday for a chance of showers over the higher terrain. The trough will move east Tuesday with a weak upper level ridge building into Wednesday. Another trough will approach from the northwest Thursday. Short Term - Tonight Through Sunday Night Increasing onshore flow tonight in the wake of an weak shortwave will bring another round of stratus to the interior by Saturday morning. Expect the extent of the stratus to be more widespread across the interior lowlands, with satellite this evening showing areas along the coast never having scattered out today. Overall, the forecast remains largely on track, with no significant updates needed. The remainder of the previous discussion follows below, with updates made to the aviation section. 14 Morning clouds on Saturday likely linger a little longer as onshore flow continues, but plenty of afternoon sunshine should yield a Saturday afternoon similar in sun and temperature as today for most. The next upper trough approaches closer into Sunday, spreading additional cloud cover and perhaps a few showers in the mountains. Otherwise, temperatures will remain similar on Sunday. Long Term - Monday Through Friday For next week, we'll see the upper trough track across the area on Monday with a focus for showers in the Cascades and an increased potential for a thunderstorm or two in the North Cascades. Expect a slight warming trend into midweek as the most likely evolution of the pattern would see heigheights rising offshore and a weak ridge or zonal flow over the region. This brings temperatures a couple of degrees warmer each day into midweek. However, it's worth noting that the ensemble members begin to show a wider variety of solutions at this time and confidence begins to decrease later in the week. Marine Broad surface ridging offshore and lower pressure inland will maintain onshore flow over the waters into next week. An upper level trough moving across the area today will enhance onshore flow across the Strait of Juan de Fuca this evening, for which a Small Craft Advisory has been issued for the Central and Eastern Strait. The next push that may meet small craft criteria appears to be Wednesday, with probabilities hinting at a 50%-70% of 21 kt or higher. Otherwise, generally benign marine conditions, with seas subsiding into the weekend and into next week to around 3-5 ft. 29 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...Small Craft Advisory until 3am PDT Saturday for Central U.S. Waters Strait Of Juan De Fuca- East Entrance U.S. Waters Strait Of Juan De Fuca. |
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