Jackson, Mississippi – A relentless surge of heat and humidity will grip Mississippi and neighboring regions Wednesday, sending heat index values soaring to 111 degrees in cities like Jackson, Hattiesburg, and Meridian. The National Weather Service has issued a heat advisory from 10 a.m. to 7 p.m., warning of dangerous conditions for anyone spending time outdoors.
According to the National Weather Service in Jackson, the advisory covers central, north, and south Mississippi—including Bolivar, Sunflower, Hinds, Forrest, and Rankin counties—as well as parts of southeast Arkansas and northeast Louisiana. Cities such as Greenville, Brookhaven, Natchez, and Columbus are also at risk for heat-related illnesses.
Local emergency managers urge residents to avoid strenuous activities during peak heat, wear lightweight clothing, and seek air-conditioned spaces. Road crews, outdoor workers, and athletes should schedule frequent breaks in the shade and drink plenty of water. Anyone experiencing symptoms of heat exhaustion—such as dizziness or nausea—should get to a cool area immediately and call 911 if symptoms worsen.
Wednesday’s advisory marks the most intense heat wave in the region so far this July, echoing last year’s mid-summer spike. The advisory may be extended if high temperatures persist into Thursday.
