Gulf of Alaska storm

52°17.7′N 157°31.0′W

Waves left about 4 Nov 06:43Z, ± 2 h

Placed by 2 buoys, whose own placements lie within 169 nmi of it

Its swell was last measured at 46077 (Shelikof Strait, AK) on 5 Nov 21:20Z; 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