North Pacific storm

50°38.8′N 179°46.7′W

Waves left about 3 Oct 06:05Z, ± 4 h

Placed by 7 buoys, whose own placements lie within 161 nmi of it

Its swell was last measured at 46239 (Point Sur, CA (157)) on 9 Oct 03:00Z; 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