Gulf of Alaska storm

52°35.1′N 159°29.4′W

Waves left about 26 Oct 06:55Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 90 nmi of it

Its swell was last measured at 46080 (Portlock Bank, AK) on 28 Oct 15:50Z; 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