North Pacific storm

09°55.4′N 165°16.3′W

Waves left about 24 Oct 06:47Z, ± 4 h

Placed by 6 buoys, whose own placements lie within 542 nmi of it

Its swell was last measured at 46211 (Grays Harbor, WA) on 1 Nov 18:00Z; 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