Bluegraph
SIMarineUS

Storms placed by their swell

North Pacific storm

34°07.6′N 146°50.9′W

Waves left about 3 Nov 21:28Z, ± 4 h

Placed by 3 buoys, whose own placements lie within 205 nmi of it

Its swell was last measured at 46076 (Cape Cleare, AK) on 9 Nov 05:20Z; 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