North Pacific storm

36°54.0′N 152°48.0′E

Waves left about 6 Oct 16:07Z, ± 2 h

Placed by 15 buoys, whose own placements lie within 362 nmi of it

Its swell was last measured at 46229 (Umpqua, OR Offshore) on 15 Oct 20:00Z; 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