Santa Cruz Island to San Clemente Island to 60 NM offshore including San Nicolas and Santa Barbara Islands Marine Forecast
| Tonight...Nw Wind 15 To 25 Kt. Seas 7 To 9 Ft. Wave Detail: Nw 9 Ft At 11 Seconds And S 2 Ft At 18 Seconds. Patchy Dense Fog This Evening. Patchy Dense Fog After Midnight. Vsby 1 Nm Or Less. |
| Fri...Nw Wind 10 To 20 Kt With Local Gusts To 25 Kt. Seas 7 To 10 Ft. Wave Detail: Nw 3 Ft At 5 Seconds, Nw 8 Ft At 11 Seconds And S 3 Ft At 20 Seconds. Patchy Dense Fog In The Morning, Then Patchy Fog In The Afternoon. Vsby 1 Nm Or Less In The Morning. |
| Fri Night...Nw Wind 10 To 20 Kt. Seas 6 To 8 Ft. Wave Detail: Nw 2 Ft At 9 Seconds, Nw 6 Ft At 10 Seconds And S 3 Ft At 19 Seconds. Patchy Fog In The Evening. Patchy Dense Fog After Midnight With Vsby 1 Nm Or Less. |
| Sat...N Wind 5 To 10 Kt. Seas 5 To 7 Ft. Wave Detail: Nw 6 Ft At 10 Seconds And S 3 Ft At 19 Seconds. Patchy Dense Fog In The Morning With Vsby 1 Nm Or Less. |
| Sat Night...Nw Wind 10 To 15 Kt. Seas 6 To 8 Ft, Building To 7 To 10 Ft. Wave Detail: Nw 9 Ft At 15 Seconds And S 3 Ft At 17 Seconds. Patchy Fog After Midnight. |
| Sun...W Wind 5 To 10 Kt In The Morning, Becoming Light. Seas 7 To 10 Ft. Wave Detail: Nw 10 Ft At 16 Seconds And S 2 Ft At 17 Seconds. Patchy Fog In The Morning. |
| Sun Night...Light Winds. Seas 7 To 10 Ft. Wave Detail: Nw 9 Ft At 15 Seconds And S 2 Ft At 15 Seconds. Patchy Fog After Midnight. |
| Mon...Light Winds. Seas 6 To 9 Ft. Wave Detail: Nw 8 Ft At 14 Seconds And S 2 Ft At 15 Seconds. Patchy Fog In The Morning. |
| Mon Night...Light Winds, Becoming Nw 5 To 10 Kt After Midnight. Seas 6 To 9 Ft. Wave Detail: Nw 8 Ft At 14 Seconds And S 2 Ft At 14 Seconds. Patchy Fog After Midnight. |
| Tue...Nw Wind 5 To 10 Kt In The Morning, Becoming Light. Seas 6 To 8 Ft. Wave Detail: Nw 7 Ft At 14 Seconds And S 3 Ft At 14 Seconds. Patchy Fog In The Morning. |
| Tue Night...Light Winds. Seas 5 To 7 Ft. Wave Detail: S 2 Ft At 13 Seconds And Nw 6 Ft At 14 Seconds. Patchy Fog After Midnight. |
| Area Forecast Discussion National Weather Service Los Angeles/Oxnard CA 806pm PDT Thu Oct 30 2025 Synopsis 30/805 PM. A switch to onshore flow will bring some gradual cooling to most of the region through Friday, with a slight rise in temperatures over the weekend as high pressure rebuilds on Saturday. There will be a return of morning low clouds and dense fog to coastal areas the next few days. Dry conditions are expected through at least early next week. Short Term - Thursday through Sunday 30/724 PM. Another day of light offshore winds brought another round of very warm temperatures into the lower to mid 90s across the valleys and inland coastal plain. The upper ridge of high pressure that brought our heat the past few days will start to break down tonight, with pressure gradients trending onshore this evening. Conditions looking favorable for dense fog to develop at some point overnight across portions of our coast. Current satellite imagery showing a return of low clouds and fog this evening across the Central Coast and starting to develop off the coasts of Orange/San Diego counties. LAX ACARS data showing a shallow and strong marine inversion over the LAX basin, currently around 500 feet. This in combination with near neutral LAX-DAG pressure gradient creates the favorable pattern for dense fog. Overnight shift may need to issue a dense fog advisory for portions of the coast. With some lowering of heigheights and gradients trending onshore on Saturday, looking for most coastal/valley areas to see some cooling. A ridge of high pressure rebuilds over the weekend. With pressure gradients remaining weak and the marine inversion remaining shallow, there will continue to be the potential for dense fog at times across coastal areas. ***From previous discussion*** Through Sunday, winds should be no issue with weak offshore and onshore gradients. As for temperatures, will anticipate 5-10 degrees of cooling for coasts/coastal valleys on Friday with greater marine influence and onshore flow in the afternoon. For Saturday and Sunday, daily temperature changes for all areas will only be a couple degrees, mainly hostage to the whims of the marine layer and surface pressure gradients. No matter what, temperatures through Sunday will remain above normal for the season. Long Term - Monday through Thursday 30/109 PM. For the extended, no major changes to previous thinking, based on latest deterministic and ensemble guidance. At upper levels, southwesterly flow will prevail across the area through Thursday. At the surface, weak onshore flow is expected. Forecast-wise, the above pattern will bring a return of the marine layer stratus/fog to the coasts and valleys through the period. some coastal valleys coasts and coastal valleys. Other than any stratus and fog, skies should remain mostly clear through Tuesday. However for Wednesday and Thursday, there will be some increase in mid and high level clouds as the tail end of a weak front will move across the area. At this time, there looks to be a decent chance of light rain (around 0.25 inches or less) across San Luis Obispo and Santa Barbara counties Wednesday night and Thursday morning, but very low chances for Ventura and LA counties. With this cloud cover and rain chances, temperatures will drop to around seasonal normals by Wednesday/Thursday. Marine 30/802 PM. NW winds between 20-30 knots are observed across the waters off the Central Coast beyond 10 NM from shore and down to San Nicolas Island, and 15-25 knots nearshore along the Central Coast. Highest seas will be to the northwestern portion of the coastal waters and peaking in the 10-12 foot range. A decrease in both winds and combined seas is likely Friday morning through Saturday afternoon, especially within 40 NM of the coast, but there is a 30% chance for Small Craft Advisories (SCA's) to be extended. Saturday afternoon through Monday morning, a combination of winds and seas across the outer waters (and potentially nearshore Central Coast waters) will reach SCA (Small Craft Advisory) criteria, with seas peaking 12-14 feet Saturday afternoon into Sunday morning. Winds and seas are then expected remain below advisory criteria through Wednesday. Conditions across the nearshore waters south of Point Conception are expected to remain relatively mild into the middle of next week. A more expansive blanket of dense fog is anticipated tonight into Friday morning, including for nearshore waters. A Marine Weather Statement is in effect detailing the locations and impacts of the fog. NOAA Los Angeles/Oxnard CA Office: Watches - Warnings - Advisories CA...High Surf Advisory in effect until midnight PDT tonight for zones 340-346. (See LAXCFWLOX). PZ...Small Craft Advisory in effect until 3am PDT Friday for zone 645. Small Craft Advisory in effect until 9am PDT Friday for zones 670-673-676. |
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