North Pacific storm

41°49.4′N 132°08.0′W

Waves left about 28 Oct 21:04Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 38 nmi of it

Its swell was last measured at 46050 (Stonewall Bank, OR) on 31 Oct 11:50Z; 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