North Pacific storm

49°00.7′N 148°16.8′W

Waves left about 2 Oct 04:29Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 181 nmi of it

Its swell was last measured at 46213 (Cape Mendocino, CA (094)) on 6 Oct 13:00Z; 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