North Pacific storm

34°47.2′N 149°50.2′W

Waves left about 2 Oct 04:58Z, ± 5 h

Placed by 3 buoys, whose own placements lie within 183 nmi of it

Its swell was last measured at 46014 (Point Arena, CA) on 6 Oct 18:50Z; 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