Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

47°01.5′N 178°43.1′E

Waves left about 24 Oct 22:24Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 92 nmi of it

Its swell was last measured at 46244 (Humboldt Bay, North Spit, CA (168)) on 29 Oct 05:39Z; 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