North Pacific storm

42°40.8′N 150°23.9′W

Waves left about 24 Oct 03:26Z, ± 2 h

Placed by 7 buoys, whose own placements lie within 285 nmi of it

Its swell was last measured at 46219 (San Nicolas Island, CA) on 28 Oct 00:00Z; 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