North Pacific storm

48°49.0′N 134°54.8′W

Waves left about 13 Oct 09:34Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 252 nmi of it

Its swell was last measured at 46022 (Eel River, CA) on 16 Oct 03:50Z; 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