North Pacific storm

30°27.6′N 178°18.0′E

Waves left about 29 Oct 14:20Z, ± 3 h

Placed by 11 buoys, whose own placements lie within 436 nmi of it

Its swell was last measured at 46258 (Mission Bay West, CA) on 5 Nov 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