North Pacific storm

39°01.0′N 160°20.5′W

Waves left about 23 Oct 00:47Z, ± 2 h

Placed by 8 buoys, whose own placements lie within 283 nmi of it

Its swell was last measured at 46082 (Cape Suckling, AK) on 27 Oct 10:20Z; 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