Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

46°12.3′N 162°31.0′W

Waves left about 23 Oct 14:04Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 279 nmi of it

Its swell was last measured at 46083 (Fairweather Ground, AK) on 27 Oct 12:20Z; 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