North Pacific storm

46°42.5′N 157°48.1′E

Waves left about 1 Nov 19:31Z, ± 3 h

Placed by 5 buoys, whose own placements lie within 221 nmi of it

Its swell was last measured at 46219 (San Nicolas Island, CA) on 8 Nov 21:00Z; 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