If Japan strikes the empty base

Pearl Harbor without the fleet has fewer defenses but retains valuable infrastructure and enormous symbolic importance. After such a raid, the Pacific Fleet would probably turn north to intercept Kido Butai's withdrawal and prevent an easy return to Japan. Storm fronts could conceal either force, while a possible Japanese move against Midway would increase the chance of crossing the American search. Japan holds the advantage in carrier numbers and aircraft, while American battleships add antiaircraft fire and absorb attention at the cost of slowing the carriers. The decisive variable becomes which side's scouts locate the other first and whether the Americans accept a six-carrier-versus-two-carrier battle.