Gulf of Alaska storm

53°26.4′N 149°01.3′W

Waves left about 23 Oct 12:13Z, ± 2 h

Placed by 4 buoys, whose own placements lie within 198 nmi of it

Its swell was last measured at 46026 (San Francisco, CA) on 27 Oct 09:20Z; 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