North Pacific storm

41°34.0′N 131°39.1′W

Waves left about 25 Oct 00:39Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 171 nmi of it

Its swell was last measured at 46087 (Neah Bay, WA) on 26 Oct 20:50Z; 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