North Pacific storm

38°35.7′N 167°44.7′W

Waves left about 3 Oct 17:22Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 113 nmi of it

Its swell was last measured at 51205 on 7 Oct 00:59Z; 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