AccuWeather meteorologists have their eye on a couple of tropical systems from the eastern Pacific to the western Atlantic basins this week, and both of these systems may be a threat to Central America. Tropical activity has trended much closer to the coasts of Central and North America in recent weeks as dry air and wind shear over the central Atlantic have become more hostile for development. Wind shear is the sudden change in speed or direction of breezes in the region that are not associated