North Pacific storm

41°27.0′N 146°18.1′W

Waves left about 5 Nov 04:42Z, ± 3 h

Placed by 5 buoys, whose own placements lie within 220 nmi of it

Its swell was last measured at 46060 (West Orca Bay, AK) on 9 Nov 10:20Z; 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