North Pacific storm

11°31.1′N 172°10.3′W

Waves left about 8 Oct 08:31Z, ± 4 h

Placed by 5 buoys, whose own placements lie within 553 nmi of it

Its swell was last measured at 46083 (Fairweather Ground, AK) on 20 Oct 02:50Z; 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