A prolonged period of hazardous heat and humidity occurred from July 18-24. Heat indices peaked near or above 100 degrees for seven consecutive days. The peak heat index at the Carbondale airport reached the following values: July 18 - 105 degrees, July 19 - 103 degrees, July 20 - 97 degrees, July 21 - 106 degrees, July 22 - 104 degrees, July 23 - 101 degrees, and July 24 - 103 degrees. A weak surface high over the Tennessee Valley and southern Appalachians produced a light south wind flow of hot and humid air for an extended period.

Heat in ALEXANDER, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in EDWARDS, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in FRANKLIN, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in GALLATIN, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in HARDIN, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in HAMILTON, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in JACKSON, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in JEFFERSON, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in JOHNSON, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in MASSAC, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in POPE, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in PERRY, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in PULASKI, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in SALINE, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in UNION, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WABASH, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WHITE, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WAYNE, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WILLIAMSON, ILLINOIS
From 18-JUL-16 12:00:00 to 24-JUL-16 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS