North Pacific storm

08°45.8′N 140°55.5′W

Waves left about 31 Oct 13:36Z, ± 4 h

Placed by 2 buoys, whose own placements lie within 29 nmi of it

Its swell was last measured at 46275 (Red Beach Nearshore) on 7 Nov 12:00Z; 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