Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

25°04.0′N 099°57.7′W

Waves left about 17 Oct 07:44Z, ± 5 h

Placed by 2 buoys, whose own placements lie within 380 nmi of it

Its swell was last measured at 51004 (SE Hawaii - 200 NM SE of Hilo) on 25 Oct 06:50Z; 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