North Pacific storm

41°36.9′N 137°05.0′W

Waves left about 8 Nov 04:58Z, ± 2 h

Placed by 3 buoys, whose own placements lie within 109 nmi of it

Its swell was last measured at 46219 (San Nicolas Island, CA) on 10 Nov 00:56Z; 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