Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

36°23.2′N 158°06.6′E

Waves left about 13 Oct 23:32Z, ± 2 h

Placed by 6 buoys, whose own placements lie within 342 nmi of it

Its swell was last measured at 51212 (Barbers Point, Kalaeloa, HI (238)) on 19 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