North Pacific storm

43°34.7′N 155°35.8′W

Waves left about 2 Oct 23:00Z, ± 2 h

Placed by 7 buoys, whose own placements lie within 160 nmi of it

Its swell was last measured at 46028 (Cape San Martin, CA) on 8 Oct 06:20Z; 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