North Pacific storm

31°34.3′N 149°51.3′W

Waves left about 14 Oct 05:48Z, ± 5 h

Placed by 4 buoys, whose own placements lie within 219 nmi of it

Its swell was last measured at 46232 (Point Loma South, CA) on 19 Oct 17:00Z; 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