North Pacific storm

19°19.2′N 172°34.4′W

Waves left about 13 Oct 23:13Z, ± 9 h

Placed by 3 buoys, whose own placements lie within 313 nmi of it

Its swell was last measured at 46222 (San Pedro, CA) on 21 Oct 21:00Z; 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