Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

45°57.3′N 132°39.4′W

Waves left about 25 Oct 23:09Z, ± 2 h

Placed by 4 buoys, whose own placements lie within 208 nmi of it

Its swell was last measured at 51004 (SE Hawaii - 200 NM SE of Hilo) on 1 Nov 15:50Z; 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