 Hurricane Burl grows to a Category 5 strength as it raises the southeast Caribbean islands. Burl expected to enter the Gulf of Mexico later this week but not be a threat to the U.S. mainland. Excessive heat warning and heat advisory in effect until 8 p.m. Dangerous heat continues to bake the Alkatex. The National Weather Service has an excessive heat warning and a heat advisory in place until 8 o'clock Tuesday for almost the whole entire region.