Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

03°27.8′N 171°52.0′E

Waves left about 28 Oct 06:08Z, ± 5 h

Placed by 6 buoys, whose own placements lie within 716 nmi of it

Its swell was last measured at 46085 (Central Gulf of Alaska) on 8 Nov 08:20Z; 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