Sorry Ken, Noel is largely correct. Yes many survived but many  died, not just in the blast but for years afterwards.  As for the Ko'olau mountains, will provide little help especially if the attack was during a period of Kona weather.  In addition NK is not the most advanced so even assuming they were aiming for Pearl Harbor hitting the windward side could be very possible.  

But the death on Oahu would be extreme.  And even if you survive, what would you do?  Roads would be closed down, communication systems offline, etc etc. etc.  

People who survive probably would soon be praying for death.