North Pacific storm

48°28.1′N 155°50.2′E

Waves left about 9 Oct 22:55Z, ± 5 h

Placed by 5 buoys, whose own placements lie within 183 nmi of it

Its swell was last measured at 46239 (Point Sur, CA (157)) on 18 Oct 16:00Z; 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