I read a e book by Richard Peters a while back called Battle of Hawaii 1941 for my Kindle. It showed what might have happened if Admiral Kimmel and General short had gotten all the intelligence about the Japanese movements, including what the Japanese consulate in Hawaii was doing.
Whys affect would that have on Short and Kimmel? Would they take it serious, could Kimmel get thfleet oh if he had several days notice? Would the army and the army aircorp be able defend Pearl harbor better? If they did, what would the Japanese do instead? In the book, without the fleet in port the Japanese attacked the oil tank farms, the machine shops, the Uss Pennsylvania, and the submarine base. Besides dispersing the battle fleet they also transferred all of the Enterprise's and Lexington's aircraft to one of the nearby islands to use as a strike force, under admiral Halsey. Thensent the carriers off to do their tasks like otl. What do you think would happen if that had plenty of warning, and what would happen afterwards? Let me know what you think.