North Pacific storm

42°42.8′N 135°43.9′W

Waves left about 23 Oct 07:31Z, ± 2 h

Placed by 4 buoys, whose own placements lie within 158 nmi of it

Its swell was last measured at 46013 (Bodega Bay, CA) on 26 Oct 12:50Z; 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