Gulf of Alaska storm

55°03.8′N 144°02.0′W

Waves left about 1 Oct 08:39Z, ± 3 h

Placed by 5 buoys, whose own placements lie within 237 nmi of it

Its swell was last measured at 52212 (Ngaraard, Palau) on 14 Oct 08:00Z; 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