Our current system is more local smaller, and has much weaker fetch. 25-30 ft seas at the center. That is a ton of energy when it is right on top of you.
Sunday we get pure 20+ second period swell about 12 ft. It will be MUCH more rideable, being generated ~2000 miles away. The storm is generating 40-50 ft seas at its center, and will send 15-20 ft SWELL (mixed 14-25 second periods) in Hawaii Friday. The pressure is really low at 955 mBar, and the fetch is huge. This is a monster storm.
See
http://blakestah.com/surf/
for a jpeg pic of the storm near its pic, and our current rain producer last night. The photo is mislabeled for Hawaii - the swell hits Friday morning at its peak, and Sunday morning in Northern California (midday in SoCal).