North Pacific storm

41°39.2′N 145°15.5′W

Waves left about 14 Oct 23:35Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 224 nmi of it

Its swell was last measured at 46050 (Stonewall Bank, OR) on 17 Oct 13:02Z; 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