Gulf of Alaska storm

51°13.3′N 152°46.4′W

Waves left about 21 Oct 15:26Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 250 nmi of it

Its swell was last measured at 46244 (Humboldt Bay, North Spit, CA (168)) on 25 Oct 10:00Z; 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