A long-period S/SSW groundswell (12-17s @ 190-201°, Genevieve + SoCal ground swell combo per Wavecast) sits square in Tippers' prime window — the reef wraps long period into long, forgiving rights instead of closing out like Ponto's straight bars can. Dawn is dead calm through ~7am, sea breeze fills 8-10am. Tide is low-to-mid and rising through the session. No shift tomorrow — full dawn window is open, no timing compromise needed.
Data from evening-surf-call run, pulled Wed Jul 29 ~7:15pm PT · buoys + NOAA tides + NWS + Open-Meteo + Wavecast (Tue 7/28 6:00am post). Surfline not checked (no browser access in automated runs).
Tippers clears all four factors: optimal S/SSW angle, 12-17s period lines the reef up long, calm dawn wind, low-to-mid incoming tide. Ponto trails on period alone — the same long period risks a closeout on its straight bars, though a small WNW windswell mixing in could cross up the bars into peaks instead. Windansea is capped at ON on tide alone — dawn is too low for its mid-tide (2-4ft) window. Blacks doesn't qualify this swell (period under its 14s canyon threshold for S). Sunset Cliffs and Oceanside Harbor sit out on wrong angle and/or wrong tide for this swell.
Days to Watch
Wed–Thu Jul 29–30 — Wavecast: Hurricane Genevieve swell combined with SoCal ground swell, "2-4ft overhead at south-facing breaks" both days, angle improving to 180° Thursday. Fri-Sat the swell fades to 1-2ft overhead then head-high — tomorrow (Thu) is the better of the two remaining days before it drops off.