The Supersonic Blast Wave will roll across the flat ocean and flat terrain all the way to Kapolei.  The high Overpressures and high heat will cause most homes along the way and at Kapolei to burst into flames as part of the massive Firestorm engulfing most of Oahu, except maybe Waialua, Halewa, Laie, Kaneohe, Kailua.  Most homes at the base of Diamond Head Oceanside will be destroyed as the Supersonic Blast Waves roll across the Ocean, Hotels at Waikiki will be thrown as Millions of tons of concrete fragments same as Ala Moana Shopping Center.  Millions of tons of concrete Condominiums landing all over Honolulu.  Rescue, nope, too high radiation levels, help from the "Mainland" not likely either as worse than the Fukushima or Chernobyl Disasters except the Entire Island of Oahu and maybe neighboring Islands (definitely got hit by the EMP and EMR, nothing electrical works, meaning no motors or engines on ships or boats, or aircraft also).