North Pacific storm

46°39.9′N 139°21.2′W

Waves left about 24 Oct 15:31Z, ± 2 h

Placed by 4 buoys, whose own placements lie within 183 nmi of it

Its swell was last measured at 46087 (Neah Bay, WA) on 26 Oct 20:50Z; 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