North Pacific storm

31°31.0′N 118°27.1′W

Waves left about 20 Oct 21:22Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 43 nmi of it

Its swell was last measured at 51004 (SE Hawaii - 200 NM SE of Hilo) on 24 Oct 22:50Z; 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