North Pacific storm

20°47.2′N 126°57.7′W

Waves left about 30 Sep 05:32Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 95 nmi of it

Its swell was last measured at 46259 (Santa Lucia Escarpment, CA) on 3 Oct 02:00Z; the replay ends there.

Each buoy places the storm from how its swell's period shortened as it arrived: the longest waves travel fastest. Fronts are drawn at deep-water group speeds along great circles, and stop at land. How it is worked out