South Pacific storm

01°14.8′S 160°40.3′W

Waves left about 5 Sep 15:41Z, ± 8 h

Placed by 3 buoys, whose own placements lie within 422 nmi of it

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