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 from August 9th through August 14th. With actual air temperatures well into the 90s and dewpoints in the upper 70s...heat index values soared above 105 degrees....with readings occasionally in excess of 110 degrees along and south of a Shelbyville to Paris line.

Excessive Heat in MOULTRIE, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Moultrie County.

Excessive Heat in DOUGLAS, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Douglas County.

Excessive Heat in CUMBERLAND, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Cumberland County.

Excessive Heat in CASS, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Cass County.

Excessive Heat in COLES, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Coles County.

Excessive Heat in EDGAR, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Edgar County.

Excessive Heat in CLARK, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Clark County.

Excessive Heat in DE WITT, ILLINOIS
From 11-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across DeWitt County.

Excessive Heat in PIATT, ILLINOIS
From 11-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Piatt County.

Excessive Heat in SCOTT, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Scott County.

Excessive Heat in MORGAN, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Morgan County.

Excessive Heat in MENARD, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Menard County.

Excessive Heat in SANGAMON, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Sangamon County.

Excessive Heat in CHRISTIAN, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Christian County.

Excessive Heat in VERMILION, ILLINOIS
From 11-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Vermilion County.

Excessive Heat in SCHUYLER, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Schuyler County.

Excessive Heat in SHELBY, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Shelby County.

Excessive Heat in EFFINGHAM, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Effingham County.

Excessive Heat in JASPER, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Jasper County.

Excessive Heat in CRAWFORD, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Crawford County.

Excessive Heat in CLAY, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Clay County.

Excessive Heat in RICHLAND, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Richland County.

Excessive Heat in MARSHALL, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Marshall County.

Excessive Heat in CHAMPAIGN, ILLINOIS
From 11-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Champaign County.

Excessive Heat in FULTON, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Fulton County.

Excessive Heat in MASON, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Mason County.

Excessive Heat in TAZEWELL, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Tazewell County.

Excessive Heat in MCLEAN, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across McLean County.

Excessive Heat in WOODFORD, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Woodford County.

Excessive Heat in LAWRENCE, ILLINOIS
From 09-AUG-10 12:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Lawrence County.

Excessive Heat in LOGAN, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Logan County.

Excessive Heat in MACON, ILLINOIS
From 09-AUG-10 14:00:00 to 14-AUG-10 14:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Macon County.

Excessive Heat in STARK, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Stark County.

Excessive Heat in PEORIA, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Peoria County.

Excessive Heat in KNOX, ILLINOIS
From 11-AUG-10 14:00:00 to 13-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Heat index readings exceeded 105 degrees across Knox County.