Midweek Storm Enters SoCal Surf Outlook

A moderate storm system is expected around the middle of next week, according to the National Weather Service’s October 17 coastal waters forecast from Los Angeles/Oxnard. That puts a weather change on my surf-planning radar—but not a guaranteed swell jackpot for San Diego or Orange County.

The same NWS bulletin forecasts gusty northeast winds and hazardous seas across its coastal forecast area through Saturday. I’m keeping those immediate conditions separate from the approaching system: this is a developing weather story, not permission to stamp “epic” on Wednesday and start canceling appointments.

What the storm forecast actually says

The NWS bulletin, issued at 12:48 a.m. Saturday, covers waters from Point Piedras Blancas to San Mateo Point, extending as far as 60 nautical miles offshore. Its regional synopsis identifies the midweek storm, but the detailed forecast supplied here is for waters much farther north than our San Diego and Orange County breaks.

Specifically, the NWS forecast for Point Piedras Blancas to Point Sal, within 10 nautical miles of shore, introduces a slight chance of showers Tuesday morning, a chance Tuesday afternoon and night, and likely showers Wednesday with a slight chance of thunderstorms.

For that northern zone, the NWS projects Wednesday seas of 5–7 feet, including northwest swell of 6 feet at 12 seconds and south swell of 3 feet at 14 seconds. Forecast winds turn from east at 5–10 knots to south during the afternoon. The agency also warns that winds and seas can be higher near thunderstorms.

Those are not breaking-wave predictions for Orange County or San Diego. I’m treating them as details of the regional weather outlook, not importing them into a local surf call. The supplied bulletin does not establish local rainfall totals, thunderstorm timing or a storm-driven surf peak for our beaches.

What it means for surfers

My move is to separate the available weekend sessions from the still-unresolved midweek setup. Surfing Tomorrow’s forecast already identifies rideable local groundswell; there’s no need to pretend those waves are a delivery from the approaching storm.

At Windansea, Surfing Tomorrow’s Saturday morning window rates Good, 3–4 feet, 70/100, with 9-knot wind and a rising tide from 8–10 a.m. The daily model lists a 16.1-second period and a 199-degree swell direction. Sunday’s forecast stays Good at 3–4 feet, with the preferred hour at 8 a.m., offshore wind and a falling tide.

Windansea’s cobblestone-over-reef bottom, documented in the Surfing Tomorrow break profile, makes it a choice I’d reserve for surfers comfortable with reef entries and exits. A green rating isn’t a padded landing mat.

At Lower Trestles, Surfing Tomorrow’s Saturday 10 a.m.–noon window rates Excellent, 4–5 feet, 78/100, with 2-knot wind and a rising tide. Its daily model carries a 14.05-second period from 191 degrees. Sunday remains Excellent at 4–5 feet, with an 8 a.m. best hour, light, glassy wind and a falling tide.

Lower Trestles has a cobblestone bottom and favors low-to-mid tides, according to Surfing Tomorrow’s break profile. I’d put that option on the list for confident surfers rather than first-session learners, subject to checking conditions and access on arrival.

What I’m watching next

Before making a midweek call, I want location-specific wind, rain and swell guidance for San Diego and Orange County. The NWS regional storm signal is worth watching; it does not yet support a precise local session time or wave-height promise.

For now, my advice is simple: use the available break forecasts for near-term planning, recheck official weather updates before committing to next week, and keep some flexibility. Stoke is welcome. Forecast certainty still has to earn its parking spot.