Marine Weather Net

Cape Blanco OR to Point St. George CA from 10 to 60 NM Marine Forecast


10 - 15


10 - 20


20 - 25



The Marine Weather Forecast In Detail:
PZZ376 Forecast Issued: 228 PM PDT Sat May 08 2021

Tonight...N Wind 10 To 15 Kt Northern Portion And N 20 To 25 Kt Southern Portion. Wind Waves 3 To 5 Ft. Nw Swell 5 To 6 Ft At 9 Seconds.
Sun...Northern Portion, N Wind 10 To 20 Kt...Rising To 20 To 25 Kt Late In The Afternoon. Southern Portion, N Wind 20 To 25 Kt. Wind Waves 3 To 5 Ft. Nw Swell 4 Ft At 9 Seconds.
Sun Night...N Wind 20 To 25 Kt Northern Portion And N 30 Kt Southern Portion. Wind Waves 5 To 8 Ft... Building To 7 To 9 Ft After Midnight. Nw Swell 5 Ft At 11 Seconds.
Mon...N Wind 30 Kt. Wind Waves 7 To 9 Ft. W Swell 4 To 5 Ft.
Mon Night...Northern Portion, N Wind 30 Kt. Southern Portion, N Wind 30 Kt...Rising To Gales 35 Kt After Midnight. Wind Waves 8 To 11 Ft. W Swell 4 Ft.
Tue...N Wind 30 Kt. Wind Waves 8 To 11 Ft. W Swell 4 Ft.
Tue Night...N Wind 30 Kt Northern Portion And N Gales 35 Kt Southern Portion. Wind Waves 8 To 11 Ft. W Swell 3 Ft.
Wed...N Wind 25 Kt. Wind Waves 8 To 10 Ft... Subsiding To 5 To 6 Ft. W Swell 3 Ft.
Thu...N Wind 25 Kt...Easing To 20 Kt. Wind Waves 4 To 5 Ft. Mixed Swell W 3 Ft And S 1 To 2 Ft.
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Area Forecast Discussion
National Weather Service Medford OR
245pm PDT Sat May 8 2021

A warming and drying trend is on track into the week. The biggest change in the forecast is increased chances of precipitation with the short wave moving through now indicating stronger than it was showing yesterday. Heading into Monday the upper ridge nudges further into the region with a thermal trough deepening northward from the border into mid week. This brings increasing warming with a roughly five degree daily warm up Sunday into Tuesday. The increased gradient with the deepening thermal trough will bring increasing Chetco effect winds, and have bumped up temperatures along the southern coast to correspond with the increased winds and 925 to 850 mb temperatures in the downslope flow. This includes high temperatures in this area Monday and Tuesday, and min temperatures Monday night and Tuesday night. Sven

.Long Term...Wednesday through Saturday...Regarding the general pattern, the models begin to diverge midweek, with various members showing various shortwaves and troughs of various strengths entering the area at various times. In short, there is a lot of variation in the model solutions. Fortunately enough, despite these differences, there are precious few members that show any precipitation at all, and even those hold off the rain until far late in the weekend or even early into the next week. Therefore, have kept the forecast dry through the forecast term.

Following the warmest day of the week on Wednesday, expect a slight cooling trend (although daytime temperatures will remain above normal overall) through the remainder of the week as those troughs and shortwaves lower the heigheights aloft and produce some increased cloud cover. Meanwhile, at the coast, expect nightly marine pushes with low clouds and fog possible north of Cape Blanco, with daytime clearing as offshore flow returns in the afternoon. Along the south coast near Brookings, warmer temperatures are possible due to a Chetco Effect, alternating with periods of fog or low clouds as wind eddies form between the coast and the stronger winds offshore. -BPN

Updated 200pm PDT Saturday 8 May 2021...A thermal trough will persist near the coast through at least the middle of next week. Gusty north winds and steep seas are expected south of Cape Blanco through Sunday afternoon. Winds and seas are then likely to build with steep seas expanding north of Cape Blanco late Sunday. South of Cape Blanco seas will likely become very steep. Winds will be stronger as well, but the general consensus suggest they will remain below gales. At the very least, steep wind driven seas are expected resulting in Hazardous Seas conditions. For now we'll keep the Gale Watch up and let the evening or night shift reevaluate this in the event the evidence becomes stronger that gales will materialize.

The operational models are in pretty good agreement showing stronger winds that could reach gales by Monday afternoon and last through Tuesday night, before winds gradually diminish Wednesday. Even then, small craft conditions are likely to persist until late next week. -Petrucelli


Pacific Coastal Waters...Gale Watch from Sunday afternoon through Monday afternoon for PZZ356-376. Small Craft Advisory until 5pm PDT Monday for PZZ356-376. Small Craft Advisory from 5pm Sunday to 5pm PDT Monday for PZZ350-370.