North Pacific storm

46°56.2′N 136°29.0′W

Waves left about 24 Oct 16:50Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 92 nmi of it

Its swell was last measured at 46214 (Point Reyes, CA) on 27 Oct 06:00Z; 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