Gulf of Alaska storm

51°18.4′N 159°02.3′W

Waves left about 26 Oct 16:48Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 122 nmi of it

Its swell was last measured at 46077 (Shelikof Strait, AK) on 29 Oct 02:20Z; 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