A long-period SSW groundswell (16-18s @ 190-208°) peaks tomorrow per both live buoys and Wavecast's same-day post — and that period is exactly Tippers' wheelhouse: the reef wraps long period into long, forgiving rights instead of closing out like Ponto's straight bars will. A second, shorter-period Genevieve pulse is arriving behind it but hasn't combined with the main swell yet. Dawn is glassy (0-5mph variable/SE), tide is low-to-mid and rising through the session. Shift starts 9am, so dawn is clean with no conflict.
Data from evening-surf-call run, pulled Tue Jul 28 ~7:00pm 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 SSW angle, 16-18s period lines the reef up long, calm dawn wind, low-to-mid incoming tide. Ponto and Blacks trail close behind on score but are capped at ON — Ponto because 16-18s tips past its own closeout-risk threshold on straight bars, Blacks because its S-angle read sits right at the edge of its 170-200° window. Windansea is capped at ON on tide alone — dawn is too low for its mid-tide (2-4ft) window. 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 arrival improving to 165-170° by Wednesday, "2-4ft overhead at breaks working southeast angles," elevated rip current/sneaker wave risk through the week. Worth a fresh pull once the two swells actually combine.