Several days of oppressive heat and humidity were experienced across parts of southern Illinois. The extreme southern tip of the state was impacted the most. Around Metropolis and Cairo, heat indices peaked in the triple digits on five consecutive days. The highest heat indices were observed on the 14th, when values from 110 to 115 were recorded. Areas of southeast Illinois including Fairfield and Mt. Carmel were impacted the least. At Fairfield and Mt. Carmel, heat indices peaked around 105 degrees on the 14th, otherwise heat index readings generally stayed below 100 in that area. High pressure over the Great Lakes region pushed a cold front down into the lower Ohio Valley. Heat indices remained persistently dangerous ahead of the cold front, while slightly lower values infiltrated southeast Illinois.

Heat in JOHNSON, ILLINOIS
From 10-JUL-18 10:00:00 to 13-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in MASSAC, ILLINOIS
From 10-JUL-18 10:00:00 to 13-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in ALEXANDER, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in PULASKI, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in MASSAC, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in UNION, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JOHNSON, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in POPE, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JACKSON, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WILLIAMSON, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in FRANKLIN, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in PERRY, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in JEFFERSON, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in WHITE, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in HAMILTON, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in GALLATIN, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in SALINE, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in HARDIN, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 15:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in EDWARDS, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WAYNE, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in WABASH, ILLINOIS
From 14-JUL-18 10:00:00 to 14-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in ALEXANDER, ILLINOIS
From 10-JUL-18 10:00:00 to 13-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in PULASKI, ILLINOIS
From 10-JUL-18 10:00:00 to 13-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in UNION, ILLINOIS
From 10-JUL-18 10:00:00 to 13-JUL-18 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet