North Pacific storm

08°32.9′N 157°23.0′W

Waves left about 23 Oct 22:02Z, ± 10 h

Placed by 2 buoys, whose own placements lie within 148 nmi of it

Its swell is still arriving: last measured at 46013 (Bodega Bay, CA) on 28 Oct 23:20Z.

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