North Pacific storm

48°35.2′N 133°03.0′W

Waves left about 4 Oct 15:15Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 219 nmi of it

Its swell was last measured at 46014 (Point Arena, CA) on 8 Oct 03:50Z; 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