North Pacific storm

17°23.9′N 147°52.9′W

Waves left about 23 Oct 15:28Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 132 nmi of it

Its swell was last measured at 46047 (Tanner Bank, CA) on 28 Oct 01:50Z; 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