North Pacific storm

02°19.3′N 146°50.2′W

Waves left about 13 Oct 04:26Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 165 nmi of it

Its swell was last measured at 51211 (Pearl Harbor Entrance, HI (233)) on 16 Oct 23:00Z; 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