North Pacific storm

43°16.4′N 145°02.1′W

Waves left about 19 Oct 15:33Z, ± 2 h

Placed by 8 buoys, whose own placements lie within 158 nmi of it

Its swell was last measured at 46259 (Santa Lucia Escarpment, CA) on 22 Oct 20:00Z; 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