North Pacific storm

20°34.9′N 142°35.7′W

Waves left about 7 Oct 15:57Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 225 nmi of it

Its swell was last measured at 46025 (Santa Monica Basin, CA) on 14 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