Gulf of Alaska storm

54°26.6′N 148°25.3′W

Waves left about 9 Oct 05:54Z, ± 2 h

Placed by 6 buoys, whose own placements lie within 212 nmi of it

Its swell was last measured at 46027 (St Georges, CA) on 14 Oct 08:50Z; 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