North Pacific storm

45°38.0′N 133°46.2′W

Waves left about 14 Oct 23:12Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 103 nmi of it

Its swell was last measured at 46027 (St Georges, CA) on 17 Oct 03:50Z; 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