Cape Flattery to James Island WA out 10 to 60 NM Marine Forecast
| Today...W Wind 5 To 10 Kt, Backing To S Late This Morning And Afternoon. Seas 5 To 6 Ft. Wave Detail: W 6 Ft At 12 Seconds And Sw 2 Ft At 15 Seconds. A Chance Of Rain Early This Morning, Then Rain Late This Morning And Afternoon. |
| Tonight...S Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: W 6 Ft At 11 Seconds And Sw 2 Ft At 15 Seconds. A Chance Of Rain In The Evening, Then Rain After Midnight. |
| Fri...S Wind 10 To 15 Kt. Seas 6 To 8 Ft. Wave Detail: W 8 Ft At 12 Seconds. Rain, Mainly In The Morning. |
| Fri Night...W Wind Around 10 Kt, Veering To Nw After Midnight. Seas 6 To 7 Ft. Wave Detail: W 7 Ft At 11 Seconds And Sw 2 Ft At 15 Seconds. Rain Likely. |
| Sat...Nw Wind 10 To 15 Kt, Rising To 15 To 20 Kt In The Afternoon. Seas 6 To 7 Ft. Wave Detail: W 7 Ft At 10 Seconds. A Chance Of Rain In The Morning. |
| Sat Night...Nw Wind 20 To 25 Kt. Seas 7 To 9 Ft, Building To 9 To 10 Ft After Midnight. Wave Detail: W 10 Ft At 9 Seconds. |
| Sun...Nw Wind 15 To 20 Kt. Seas 8 To 10 Ft. Wave Detail: W 9 Ft At 9 Seconds. |
| Sun Night...W Wind 10 To 15 Kt, Backing To Sw After Midnight. Seas 6 To 7 Ft. Wave Detail: W 7 Ft At 10 Seconds. A Chance Of Rain After Midnight. |
| Mon...Sw Wind 10 To 15 Kt. Seas 5 To 6 Ft. Wave Detail: W 6 Ft At 10 Seconds. Rain Likely, Mainly In The Morning. |
| Mon Night...W Wind 10 To 15 Kt. Seas 5 To 6 Ft. Wave Detail: W 6 Ft At 10 Seconds. |
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Area Forecast Discussion National Weather Service Seattle WA 402am PDT Thu May 15 2025 Synopsis A weak upper level ridge remains overhead early this morning, but this will quickly be replaced as the next frontal system crosses Western Washington today. This will usher in the next round of steadier rain across the area through the evening. An unsettled weather pattern will remain in place across the Pacific Northwest this weekend through early next week, maintaining widespread clouds and rain showers. Short Term - Today through Saturday A few lingering showers in a loosely organized convergence zone are evident on radar this morning, but this is continuing to decrease this morning as onshore flow decreases and increasing subsidence develops over the region. The next frontal system is already approaching the coastal waters and coming into the view of radar coverage this morning. This disturbance will reach the coastline by mid- morning and continue to slowly advance inland later today bringing a bit more widespread rainfall. With colder air aloft, expect some snow in the mountains above around 4,500 feet as this system reaches inland. Additional disturbances will maintain cool, cloudy conditions into the weekend, with shower chances continuing. Will need to continue to monitor the Saturday afternoon and evening time period for a few thunderstorms as instability increases. The chances remain highest (around 15%) for areas south and east of Puget Sound and lower elsewhere. Otherwise, temperatures through the period generally in the upper 50s to around 60, or around 5 degrees Long Term - Saturday Night Through Wednesday The cool and showery pattern will continue through much of Sunday, with another brief lull Sunday night as heigheights rise over the region in between disturbances. This appears to be a quite short break, however, with good ensemble agreement supporting generally zonal flow that will keep the door open to abundant cloud cover and rounds of showers as disturbances move through the region. Temperatures generally hold within a few degrees of seasonal Marine Winds along the Central and East Strait have been subsiding early this morning and the Small Craft Advisory has been allowed to expire. A frontal system will traverse the waters late Thursday into Friday, with winds tracking to remain below small craft criteria. However, an isolated gust around 21 kt cannot be ruled along the coastal waters. The front will weaken as it moves onshore on Friday. Surface high pressure will rebuild Saturday into Sunday offshore, likely bringing a round of small craft winds over the coastal waters and Strait of Juan de Fuca. High pressure will weaken late Sunday night as a stronger system moves over the waters on Monday. Seas will hover around 4-6 ft on Thursday and will build on Friday to 7-8 ft. Saturday seas will decrease slightly, before increasing again on Sunday to 8-10 ft. 29 NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...None. |
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