North Pacific storm

44°19.5′N 176°29.5′W

Waves left about 16 Oct 02:16Z, ± 4 h

Placed by 3 buoys, whose own placements lie within 114 nmi of it

Its swell was last measured at 46213 (Cape Mendocino, CA (094)) on 20 Oct 02:00Z; 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