North Pacific storm

36°13.7′N 142°02.6′W

Waves left about 21 Oct 16:54Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 293 nmi of it

Its swell was last measured at 46076 (Cape Cleare, AK) on 26 Oct 03:20Z; 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