A large upper-level ridge of high pressure over the southern U.S. produced an extended period of hot and humid weather across central Illinois.  With actual air temperatures well into the 90s and dewpoints in the upper 70s...heat index readings soared above 105 degrees....with the highest values noted along and south of a Rushville...to Lincoln...to Danville line.

Excessive Heat in CASS, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Cass County on August 3rd and 4th.

Excessive Heat in SCHUYLER, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Schuyler County on August 3rd and 4th.

Excessive Heat in SCOTT, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Scott County on August 3rd and 4th.

Excessive Heat in MORGAN, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Morgan County on August 3rd and 4th.

Excessive Heat in MASON, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Mason County on August 3rd and 4th.

Excessive Heat in MENARD, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Menard County on August 3rd and 4th.

Excessive Heat in EDGAR, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Edgar County on August 3rd and 4th.

Excessive Heat in CUMBERLAND, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Cumberland County on August 3rd and 4th.

Excessive Heat in CLARK, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Clark County on August 3rd and 4th.

Excessive Heat in EFFINGHAM, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Effingham County on August 3rd and 4th.

Excessive Heat in JASPER, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Jasper County on August 3rd and 4th.

Excessive Heat in CRAWFORD, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Crawford County on August 3rd and 4th.

Excessive Heat in MOULTRIE, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Moultrie County on August 3rd and 4th.

Excessive Heat in PIATT, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Piatt County on August 3rd and 4th.

Excessive Heat in CHAMPAIGN, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Champaign County on August 3rd and 4th.

Excessive Heat in VERMILION, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Vermilion County on August 3rd and 4th.

Excessive Heat in DOUGLAS, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Douglas County on August 3rd and 4th.

Excessive Heat in COLES, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Coles County on August 3rd and 4th.

Excessive Heat in SANGAMON, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Sangamon County on August 3rd and 4th.

Excessive Heat in LOGAN, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Logan County on August 3rd and 4th.

Excessive Heat in DE WITT, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across DeWitt County on August 3rd and 4th.

Excessive Heat in MACON, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Macon County on August 3rd and 4th.

Excessive Heat in CHRISTIAN, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Christian County on August 3rd and 4th.

Excessive Heat in SHELBY, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Shelby County on August 3rd and 4th.

Excessive Heat in CLAY, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Clay County on August 3rd and 4th.

Excessive Heat in RICHLAND, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Richland County on August 3rd and 4th.

Excessive Heat in LAWRENCE, ILLINOIS
From 03-AUG-10 12:00:00 to 04-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Lawrence County on August 3rd and 4th.