North Pacific storm

38°36.5′N 172°26.1′W

Waves left about 4 Oct 17:53Z, ± 2 h

Placed by 8 buoys, whose own placements lie within 286 nmi of it

Its swell was last measured at 46237 (San Francisco Bar, CA (142)) on 14 Oct 15:00Z; 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