North Pacific storm

39°25.3′N 157°51.4′E

Waves left about 22 Oct 05:22Z, ± 3 h

Placed by 6 buoys, whose own placements lie within 245 nmi of it

Its swell was last measured at 46059 (West California) on 28 Oct 16:50Z; 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