Gulf of Alaska storm

57°36.9′N 150°11.0′W

Waves left about 27 Oct 06:21Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 149 nmi of it

Its swell was last measured at 46005 (West Washington) on 1 Nov 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