Point Grenville to Cape Shoalwater WA out 10 to 60 NM Marine Forecast
| Today...Nw Wind 15 To 20 Kt. Seas 9 To 10 Ft, Subsiding To 7 To 9 Ft This Afternoon. Wave Detail: Nw 10 Ft At 9 Seconds, W 2 Ft At 14 Seconds And S 2 Ft At 15 Seconds. |
| Tonight...Nw Wind 10 To 15 Kt. Seas 6 To 9 Ft. Wave Detail: Nw 8 Ft At 9 Seconds, W 2 Ft At 13 Seconds And S 2 Ft At 15 Seconds. |
| Wed...N Wind 5 To 10 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 6 Ft At 9 Seconds, W 3 Ft At 13 Seconds And S 2 Ft At 14 Seconds. |
| Wed Night...N Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 7 Ft At 9 Seconds And W 2 Ft At 17 Seconds. |
| Thu...N Wind 5 To 10 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 6 Ft At 9 Seconds And W 3 Ft At 15 Seconds. |
| Thu Night...N Wind 10 To 15 Kt. Seas 6 To 7 Ft. Wave Detail: Nw 6 Ft At 9 Seconds And Nw 6 Ft At 13 Seconds. |
| Fri...Nw Wind 10 To 15 Kt. Seas 5 To 6 Ft. Wave Detail: Nw 5 Ft At 9 Seconds And W 5 Ft At 12 Seconds. |
| Fri Night...Nw Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 6 Ft At 8 Seconds, W 3 Ft At 12 Seconds And Sw 2 Ft At 18 Seconds. |
| Sat...Nw Wind Around 10 Kt. Seas Around 5 Ft. Wave Detail: Nw 5 Ft At 6 Seconds, W 2 Ft At 11 Seconds And Sw 2 Ft At 17 Seconds. A Chance Of Rain. |
| Sat Night...Nw Wind 10 To 15 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 6 Ft At 6 Seconds, W 3 Ft At 10 Seconds And S 2 Ft At 13 Seconds. A Chance Of Rain After Midnight. |
| Area Forecast Discussion National Weather Service Seattle WA 901am PDT Tuesday April 7 2026 Synopsis Dry and cooler conditions today as a colder air mass settles over the region. A dry pattern will persist through much of the week, with a gradual warming trend peaking on Friday. Unsettled conditions return this weekend. Short Term - Today through Thursday Satellite shows stratus lingering across the central Sound this morning, though expect cloud cover to scatter over the next few hours for some afternoon sun. The overall forecast remains on track - and the previous discussion follows below. Updates have been made to the aviation and marine sections. 14 An upper level low moving across Western Canada continues to bring onshore flow across Western Washington. A dry cold front associated with the upper level low has moved through, allowing a colder air mass to situate over the region. High temperatures today will be in the 50s. Temperatures tonight into Wednesday morning are expected to get chilly, with low temperatures dipping into 30s. Cooler overnight temperatures near freezing, may promote the development of frost across portions of Western Washington that may impact sensitive vegetation. Highest confidence (70-90% chance) for frost is for the southern interior, for which a Frost Advisory has been issued to start late tonight. A gradual warm up is expected to start on Wednesday and continue late in the week as weak high pressure builds over Western Washington. High temperatures will be in the mid 50s for the coast and low 60s on Wednesday. By Thursday expect low 60s along the coast and mid to upper 60s along the interior. Low temperatures on Thursday morning will be in the mid to upper 30s and Friday morning will be in the low 40s. Long Term - Thursday Night Through Monday Dry conditions continue through Friday. Unsettled conditions expected to return this weekend, as an upper level low moves south from the Gulf of Alaska. However, there is uncertainty regarding the track of the low. Some solutions favor the center of the low to move into California, resulting in wet but slightly drier conditions for Western Washington. Other models favor the low to move over Oregon, resulting in a wetter solution for the region through Monday. 29 Marine Gales have ended through the Strait and the SCA (Small Craft Advisory) for the Northern Inland waters has been allowed to expire. Seas are still elevated, particularly in the northernmost outer coastal zone up to 15 feet, subsiding to 10 feet or less by 18Z this morning. Winds will slowly ease throughout the rest of the day and remain relatively light through the rest of the week as high pressure remains in place over the northeast Pacific. 21/41 Hydrology No river flooding expected in the next 7 days. NOAA Seattle WA Office: Watches - Warnings - Advisories WA...Frost Advisory from 11pm this evening to 9am PDT Wednesday for Foothills and Valleys of Thurston and Lewis Counties- Lowlands of Lewis and Southern Thurston Counties-Middle Chehalis River Valley-Olympia and Southern Puget Sound- Willapa and Black Hills. PZ...Small Craft Advisory until 2pm PDT this afternoon 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- West Entrance USA Waters Strait Of Juan De Fuca. Small Craft Advisory until 9am PDT this morning for Northern Inland Waters Including The San Juan Islands. |
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