North Pacific storm

49°40.3′N 164°26.0′W

Waves left about 21 Oct 13:02Z, ± 3 h

Placed by 5 buoys, whose own placements lie within 277 nmi of it

Its swell was last measured at 46015 (Port Orford, OR) on 27 Oct 13:20Z; 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