North Pacific storm

22°29.3′N 163°27.1′W

Waves left about 25 Oct 21:15Z, ± 5 h

Placed by 4 buoys, whose own placements lie within 383 nmi of it

Its swell was last measured at 46211 (Grays Harbor, WA) on 1 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