North Pacific storm

36°43.0′N 169°57.2′W

Waves left about 21 Oct 17:59Z, ± 3 h

Placed by 7 buoys, whose own placements lie within 360 nmi of it

Its swell was last measured at 46254 (Scripps Nearshore, CA) on 27 Oct 22:00Z; 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