North Pacific storm

34°19.6′N 153°29.2′W

Waves left about 27 Oct 18:47Z, ± 3 h

Placed by 2 buoys, whose own placements lie within 139 nmi of it

Its swell was last measured at 51001 (NW Hawaii - 200 NM NW of Kauai) on 30 Oct 19:20Z; 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