Formation of hurricanes in the northeast Pacific Ocean were not officially recognized until the 1920s. Most hurricanes move across the oceans from east to west because prevailing winds travel in that direction. Increased shipping along the west coast of Mexico and the United States alerted meteorologists to the number of hurricane force storms formed in the north eastern Pacific Ocean. Today it is recognize that this basin is the second most active basin for formation of hurricanes on our planet. The north western Pacific Ocean basin that includes the Philippines and Japan is the most active for formation of hurricanes.