Gulf of Alaska storm

56°04.3′N 157°34.6′W

Waves left about 22 Oct 20:01Z, ± 1 h

Placed by 6 buoys, whose own placements lie within 278 nmi of it

Its swell was last measured at 46213 (Cape Mendocino, CA (094)) on 28 Oct 01:00Z; 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