North Pacific storm

48°31.0′N 148°29.8′W

Waves left about 23 Oct 19:58Z, ± 1 h

Placed by 11 buoys, whose own placements lie within 208 nmi of it

Its swell was last measured at 46028 (Cape San Martin, CA) on 27 Oct 13:50Z; 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