A very large high in the upper levels of the atmosphere was sprawled across the southern two-thirds of the country for several days. This high brought three to four days of oppressive heat and humidity across southern Illinois. Cooling centers were opened at various public offices, including Carbondale city hall and health offices in Union and Williamson Counties. Afternoon heat indices peaked between 101 and 111 degrees each day from the 18th to the 21st. The heat index at Carbondale peaked at 111 degrees on the 18th, and 107 to 108 from the 19th to the 21st. Heat indices in the southeast counties were not quite as high, but still around 105 each day. Just prior to this heat wave, the remnants of Tropical Storm Barry produced a widespread soaking rain that set the stage for very high humidity levels. Dew points were in the mid 70's. Actual high temperatures were in the lower 90's.

Excessive Heat in POPE, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in PULASKI, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in SALINE, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in UNION, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in WAYNE, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in WHITE, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in WILLIAMSON, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in WABASH, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in ALEXANDER, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in EDWARDS, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in FRANKLIN, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in GALLATIN, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in HAMILTON, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in HARDIN, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in JACKSON, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in JEFFERSON, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in JOHNSON, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in MASSAC, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in PERRY, ILLINOIS
From 18-JUL-19 11:00:00 to 21-JUL-19 17:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS