North Pacific storm

41°34.7′N 171°19.6′W

Waves left about 4 Oct 18:52Z, ± 1 h

Placed by 10 buoys, whose own placements lie within 338 nmi of it

Its swell was last measured at 46069 (South Santa Rosa Island, CA) on 11 Oct 07:39Z; 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