Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

44°36.7′N 165°53.3′E

Waves left about 26 Oct 17:38Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 289 nmi of it

Its swell was last measured at 46075 (Shumagin Islands, AK) on 29 Oct 15:20Z; 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