North Pacific storm

48°42.6′N 178°46.3′W

Waves left about 4 Oct 07:09Z, ± 2 h

Placed by 16 buoys, whose own placements lie within 396 nmi of it

Its swell was last measured at 46239 (Point Sur, CA (157)) on 14 Oct 18:00Z; 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