Update: Worst heat, humidity of summer upon Mississippi; heat indices top 114 degrees
Some of the hottest conditions of the summer season are expected to unfold through Tuesday across parts of Mississippi with heat advisories and warnings all in effect.
The National Weather Service has expanded a heat advisory that was previously issued on Sunday to include much of the state including the Jackson metro area until 8 p.m. Tuesday.
In addition, an excessive heat warning has been issued for portions of western Mississippi also until 8 p.m. Tuesday.
The advisories and warnings cover 62 out of the state’s 82 counties.
The heat advisory includes Adams, Amite, Attala, Calhoun, Carroll, Choctaw, Claiborne, Clarke, Coahoma, Copiah, Covington, De Soto, Forrest, Franklin, Grenada, Hancock, Harrison, Hinds, Holmes, Jackson, Jasper, Jefferson, Jefferson Davis, Jones, Kemper, Lafayette, Lamar, Lauderdale, Lawrence, Leake, Lincoln, Madison, Marion, Marshall, Montgomery, Neshoba, Newton, Panola, Pearl River, Pike, Quitman, Rankin, Scott, Simpson, Smith, Tallahatchie, Tate, Tunica, Walthall, Webster, Wilkinson, Winston, Yalobusha and Yazoo counties.
The excessive heat warning includes Bolivar, Humphreys, Issaquena, Leflore, Sharkey, Sunflower, Warren and Washington counties.
As previously reported, a hot upper ridge of high pressure centered over the Southern Plains was expanding eastward into the state. This will result in elevating heat levels with widespread high temperatures near or around 100 degrees during the afternoon hours.
This combined with increasing humidity levels will result in heat indices and or real feel temperatures on the skin from 106 to as high as 115 degrees across the advisory and heat warning areas.
Little relief overnight is forecast with low only dropping off into the mid and upper 70s to around 80 degrees.
Under such conditions, life-threatening heat illnesses if one spends prolonged periods of time outdoors.
Everyone is strongly urged to use extreme caution and stay updated on the latest weather information as it becomes available if you must spend any prolonged length of time outdoors.
Increasing rain chances will taper down the heat as we head toward the middle of the week as storm complexes rotate from the northwest around the hot dome of high pressure into the state. Strong to severe storms are possible with one such storm complex late Monday afternoon and evening, specifically along and east of Interstate 55.
We are in the midst of what is historically the hottest period of the summer season from late July through early August.