North Pacific storm

47°26.3′N 178°22.1′E

Waves left about 9 Oct 06:26Z, ± 2 h

Placed by 7 buoys, whose own placements lie within 324 nmi of it

Its swell was last measured at 46267 (Angeles Point, WA (248)) on 18 Oct 10:00Z; 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