Cape Flattery to Cape Shoalwater WA between 150 and 250 NM Offshore Forecast
| Today...W Winds Less Than 10 Kt, Becoming W To Nw, Then, Becoming N To Nw 10 To 20 Kt. Seas 5 To 7 Ft. |
| Tonight...N Winds 20 To 30 Kt. Seas 7 To 12 Ft. |
| Fri...N Winds 25 To 30 Kt. Seas 10 To 13 Ft. |
| Fri Night...N Winds 20 To 30 Kt. Seas 8 To 12 Ft. |
| Sat...N Winds 15 To 25 Kt. Seas 7 To 10 Ft. |
| Sat Night...N Winds 10 To 20 Kt. Seas 6 To 8 Ft. |
| Sun...N Winds 5 To 15 Kt. Seas 6 To 7 Ft. |
| Sun Night...N Winds 10 To 20 Kt. Seas 5 To 7 Ft. |
| Mon...N Winds 10 To 20 Kt, Becoming 10 To 15 Kt. Seas 4 To 6 Ft. |
| Mon Night...N Winds 10 To 15 Kt, Diminishing To 5 To 10 Kt. Seas 4 To 5 Ft. |
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Area Forecast Discussion National Weather Service Seattle WA 221am PST Thu Jan 23 2025 Synopsis Upper level ridge over the area weakening and shifting west today. Weak system moving down British Columbia coast moving through tonight. Ridge rebuilding offshore Friday with the ridge nosing into British Columbia over the weekend. The ridge will move directly over Western Washington Monday and Tuesday then weaken and shift west again Wednesday. This will open the door to possible weather systems the latter half of next week. Short Term - Today through Saturday Satellite imagery shows just a few high clouds over Western Washington early this morning. Stratus once again in the Strait of Georgia but unlike yesterday morning the stratus is not spilling south into the San Juans. Patchy freezing fog around Arlington and Shelton with visibility above a mile. Temperatures in the mid 20s to lower 30s. Upper level ridge over the area this morning weakening and shifting west this afternoon. Shortwave currently located near Haida Gwaii will move south during the day but still over Southern British Columbia by late afternoon. Clouds increasing from the north this afternoon with just a slight chance of showers near the Canadian border late this afternoon. Highs in the lower to mid 40s. Shortwave moving through Western Washington overnight. Not much left of this feature by the time it moves over the area making for a chance probability of precipitation at best forecast. Cloud cover will keep temperatures just above freezing overnight in most locations. Temperatures dropping just below freezing in Whatcom county early Friday morning but by that point the moisture is pretty much gone. Lows tonight in the mid 30s. Shortwave south of the area Friday. Upper level ridge offshore strengthening. Increasing dry northerly flow aloft clearing skies out across the area early in the day. Even with plenty of afternoon sunshine highs will again be below normal, in the lower to mid 40s. Upper level ridge continuing to build Friday night into Saturday with the ridge nosing into British Columbia. Dry north northeasterly flow aloft. Light gradients at the surface for another round of patchy freezing fog early Saturday morning in the usual locations like the Southwest Interior. Lows mid 20s to lower 30s. Highs lower to mid 40s. Long Term - Sunday Through Wednesday Extended models showing good consistency both run to run and with each other. Upper level rex block pattern, upper level ridge over us and to the north with upper level low over Central and Southern California setting up Saturday night. This is a very stable pattern and it will remain in place into Tuesday. Pattern breaking down Wednesday with upper level low kicking out to the east and the upper level ridge over Western Washington weakening. Wednesday still a dry day but changes are in the offing for later next week. In the meantime, more of the same through the extended period with sunny days and clear nights. Patchy freezing fog each morning. Highs lower to mid 40s. & Marine Broad high pressure will weaken throughout the day today as a weak frontal system moves southward from British Columbia tonight into early Friday. Northerly winds will pick up this evening with the strongest winds expected over the outermost coastal waters, for which a Small Craft Advisory has been issued through early Friday morning. High pressure will rebuild over interior British Columbia late Friday into the weekend with a surface trough along the coast, allowing for weak Fraser outflow to develop along with offshore flow across the coastal waters. This pattern look to continue into early next week with the next system not arriving until the latter half of next week. Seas 3 to 5 ft early this morning will build to 8 to 12 ft tonight into Friday then subsiding back to around 4 to 6 ft this weekend and into next week. 62 Hydrology No river flooding next 7 days. NOAA Seattle WA Office: Watches - Warnings - Advisories WA...None. PZ...None. |
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