Marine Weather Net

Point Grenville to Cape Shoalwater WA out 10 NM Marine Forecast


5 - 15


10 - 20


15 - 25


10 - 20

The Marine Weather Forecast In Detail:
PZZ156 Forecast Issued: 241 PM PDT Sat May 08 2021

Tonight...W Wind 5 To 15 Kt. Wind Waves 1 To 3 Ft. W Swell 5 Ft At 8 Seconds. A Chance Of Rain.
Sun...Nw Wind 10 To 20 Kt. Wind Waves 2 To 4 Ft. W Swell 5 Ft At 9 Seconds. A Slight Chance Of Rain.
Sun Night...Nw Wind 15 To 25 Kt. Wind Waves 3 To 5 Ft. W Swell 7 Ft At 11 Seconds.
Mon...Nw Wind 10 To 20 Kt Becoming 5 To 15 Kt In The Afternoon. Wind Waves 2 To 4 Ft. W Swell 7 Ft At 11 Seconds.
Mon Night...Nw Wind 10 To 20 Kt Easing To 5 To 15 Kt After Midnight. Wind Waves 2 To 4 Ft. W Swell 6 Ft At 12 Seconds.
Tue...Nw Wind 5 To 15 Kt. Wind Waves 1 To 3 Ft. W Swell 6 Ft At 12 Seconds.
Tue Night...Nw Wind 5 To 15 Kt. Wind Waves 1 To 3 Ft. W Swell 4 Ft At 11 Seconds.
Wed...Nw Wind 5 To 15 Kt Becoming 10 To 20 Kt. Wind Waves 2 To 4 Ft. W Swell 4 Ft.
Thu...Nw Wind 5 To 15 Kt Rising To 10 To 20 Kt. Wind Waves 2 To 4 Ft. Sw Swell 4 Ft.
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851 AM PDT Sat May 8 2021
Northern and Central Washington Coastal and Inland Waters - PZZ100
Varying degrees of onshore flow will continue through the middle of next week.
Area Forecast Discussion
National Weather Service Seattle WA
832am PDT Sat May 8 2021

.UPDATE /0900 AM/...No major changes to the forecast this Saturday morning. A weak warm front is currently situated off shore resulting in increased cloudiness. As this front and the associated low move eastward the area could see some light rain showers later today. This system will slowly make its way out of Western Washington Sunday morning giving way to less cloudy skies later in the day and the start to the week.

The previous forecast with updated Marine and Aviation sections are below.


A weak weather system will bring a little rain mainly west of Puget Sound today. That system will break up and dissipate as it moves inland tonight. An upper ridge will build into the region early next week for sunnier warmer weather. The ridge will break down in the second half of next week.

.SHORT TERM /TODAY THROUGH MONDAY/...Remnants of an earlier convergence are finally drifting into the Cascades this morning and dissipating as an upper trough exits the region. A weak warm front out ahead of some low amplitude upper ridging offshore will brush the coastal waters later today and dissipate as it does so. Apart from additional cloud cover today, it won't produce much precipitation across the area. High temperatures will remain unseasonably cool today in the 50s. Most of the rain will remain west of Puget Sound until early this evening. A smattering of light rain could reach the interior lowlands this evening as the system falls apart, but it's not likely to add up to more than a few hundredths of an inch.

Upper ridging offshore will gain some amplitude on Sunday, but cloud cover will likely remain in place for most areas much of the today. The prospect of a few peeks of late day sunshine will give high temperatures a little nudge closer to normal. The upper ridge will finally get some traction Sunday night and Monday with skies clearing out and daytime highs edging toward climatological normals.

Long Term - Tuesday Through Friday
Tuesday and Wednesday are shaping up to be the warmest and sunniest days of the week ahead with upper ridging moving onshore. There is some model disagreement on the strength of the ridge, but dry conditions and slightly above normal temperatures look like a good bet. Upper ridging is slated to break down toward the second half of the week. There is, however, some doubt as to how quickly this will happen. There's a decent spread in the Thursday/Friday timeframe amongst ensemble members on temperatures. All in all, a trend toward a cooler, more unsettled pattern looks possible just in time for another weekend. 27

Varying degrees of onshore flow will continue into the first part of next week with high pressure over the coastal waters.

Best chance for small craft advisory winds will be Sunday night in the coastal waters and the Strait of Juan de Fuca. Will evaluate this threat as 12Z data comes in and will weigh the prospects of a headline with the afternoon forecast package. Felton/18

The daily hydrology discussion has ended until the start of the next rainy season; it will only be updated as needed until then.