Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

43°00.6′N 178°17.2′W

Waves left about 24 Oct 11:48Z, ± 2 h

Placed by 9 buoys, whose own placements lie within 385 nmi of it

Its swell was last measured at 46248 (Astoria Canyon, OR (179)) on 1 Nov 17:32Z; 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