North Pacific storm

25°32.0′N 172°55.1′W

Waves left about 14 Oct 17:46Z, ± 6 h

Placed by 3 buoys, whose own placements lie within 213 nmi of it

Its swell was last measured at 46080 (Portlock Bank, AK) on 22 Oct 16:50Z; 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