A significant weather event is unfolding this week as a massive cloud of dust from the Sahara Desert is heading toward the southeastern United States. This annual occurrence, part of the atmospheric phenomenon known as the Saharan Air Layer,

A Sahara dust storm is hitting the U.S. in June. Here's how it will affect hurricanes, air quality, asthma, and hazy skies.

The dust from Africa spreads across the Atlantic during the early part of each hurricane season. Some of it has now reached Florida.