North Pacific storm

39°59.2′N 162°55.6′W

Waves left about 15 Oct 15:39Z, ± 5 h

Placed by 5 buoys, whose own placements lie within 269 nmi of it

Its swell was last measured at 46011 (Santa Maria, CA) on 22 Oct 15:12Z; 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