A large ridge of high pressure expanded across the Upper Midwest and allowed for a stagnant pattern, and eventually oppressive heat and humidity to develop. Maximum heat index values varied from 108 to 116.

Excessive Heat in BARRON, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days. The highest heat index occurred Tuesday, July 19th with a reading of 108 degrees.

Excessive Heat in CHIPPEWA, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Monday, July 18th with a reading of 113 degrees.

Excessive Heat in DUNN, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Monday, July 18th with a reading of 109 degrees.

Excessive Heat in EAU CLAIRE, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Monday, July 18th with a reading of 114 degrees.

Excessive Heat in PEPIN, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Monday, July 18th with a reading of 116 degrees.

Excessive Heat in PIERCE, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Monday, July 18th with a reading of 116 degrees.

Excessive Heat in POLK, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Tuesday, July 19th with a reading of 113 degrees.

Excessive Heat in RUSK, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days. The highest heat index occurred Tuesday, July 18th with a reading of 116 degrees.

Excessive Heat in ST. CROIX, WISCONSIN
From 18-JUL-11 12:00:00 to 20-JUL-11 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: County Official

Several sources from surface observations, to local officials, media and health organizations indicated that the combination of heat and humidity, from a large dome of high pressure, allowed for excessive heat to cause significant problems for several days.  The highest heat index occurred Tuesday, July 19th with a reading of 109 degrees.