North Pacific storm

28°29.9′N 173°58.6′E

Waves left about 22 Oct 20:31Z, ± 4 h

Placed by 5 buoys, whose own placements lie within 387 nmi of it

Its swell is still arriving: last measured at 46042 (Monterey, CA) on 29 Oct 10:20Z.

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