North Pacific storm

07°59.5′N 170°24.1′W

Waves left about 13 Oct 19:01Z, ± 6 h

Placed by 4 buoys, whose own placements lie within 349 nmi of it

Its swell was last measured at 46082 (Cape Suckling, AK) on 23 Oct 12:50Z; 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