Gulf of Alaska storm

51°10.7′N 158°21.9′W

Waves left about 24 Oct 10:45Z, ± 3 h

Placed by 3 buoys, whose own placements lie within 150 nmi of it

Its swell was last measured at 46054 (West Santa Barbara, CA) on 28 Oct 03:03Z; 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