They weren't told the exact location of the attack idiot.
They knew an attack was coming, they didn't know what was going to be attacked or when it was going to happen. Get your shit straight.
31 March 1941 - A Navy report by Bellinger and Martin predicted that if Japan made war on the US, they would strike Pearl Harbor without warning at dawn with aircraft from a maximum of 6 carriers. For years Navy planners had assumed that Japan, on the outbreak of war, would strike the American fleet wherever it was - it was the greatest danger from Japan. The fleet was the only threat to Japan's plans. The fleet at Pearl Harbor was the only High Value Target. Logically, Japan couldn't engage in any major operation with the American fleet on its flank. Initial seriously crippling attacks on the US fleet in Hawaii would be the only chance the Japanese military would have for eventual victory. The strategic options for the Japanese were not unlimited.