There is a monster storm in progress in the Bering Strait headed to the Aleutians that promises to generate extremely high waves today and tomorrow. The unusual shape to the Low is a partial result result of two storms coming together, which resulted in this long fetch. An isolated system would be more round, with shorter fetch.
By Wednesday, October 25 the wave forecasts are for 60 ft, significant wave height of combined seas (SWH).
We see SWH of combined seas of 60 ft, but strangely this appears to be mostly all wind waves. The swell component in that region at the time is very low… in fact the WW3 model does not give swell data in the high wave region at all. They just give combined seas and wind waves, and throughout that region the wind wave heights are within a few feet of the combined seas heights. The forecasted hurricane force winds are completely dominating the sea state. Swell directions along the perimeter of the system are in all directions.
Continue reading the full post on David Burch Navigation Blog.