No doubt you've heard talk that El Niño is going to limit tropical activity in the Atlantic this hurricane season. That's a possibility, though it's not a slam dunk. The El Niño hasn't developed yet, and its eventual strength is important to how it affects tropical-storm and hurricane formation.   Years of research have taught us that the temperature of the Pacific Ocean water along the equator drives weather patterns around the world. The region that correlates best with El