North Pacific storm

38°25.2′N 159°00.3′E

Waves left about 22 Oct 07:19Z, ± 4 h

Placed by 4 buoys, whose own placements lie within 260 nmi of it

Its swell was last measured at 46278 (Tillamook Bay South Jetty, OR) on 28 Oct 16:00Z; 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