A large plume of Sharan dust has made its return to South Florida.
The Saharan Air Layer originates from the Saharan Desert in northern Africa and is a common occurrence during the summer months.
Saharan dust limits rain potential. With dry air in the middle of the atmosphere, it is difficult for water vapor to condense into the clouds and grow into storms.
This week, record highs are possible some days with highs in the mid 90s. By Thursday, rain chances should return to normal as the plume of dust departs, according to the National Weather Service.