North Pacific storm

36°59.5′N 175°02.6′E

Waves left about 6 Oct 17:09Z, ± 3 h

Placed by 4 buoys, whose own placements lie within 265 nmi of it

Its swell was last measured at 46278 (Tillamook Bay South Jetty, OR) on 13 Oct 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