North Pacific storm

24°49.1′N 143°48.6′W

Waves left about 19 Oct 09:31Z, ± 2 h

Placed by 7 buoys, whose own placements lie within 278 nmi of it

Its swell was last measured at 46083 (Fairweather Ground, AK) on 25 Oct 22:20Z; 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