Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

52°19.9′N 150°07.3′E

Waves left about 28 Oct 03:02Z, ± 2 h

Placed by 5 buoys, whose own placements lie within 386 nmi of it

Its swell was last measured at 51214 (King-Poloa, American Samoa) on 8 Nov 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