A ridge of high pressure aloft over the plains allowed a prolonged period of hot and very humid conditions to persist across eastern Nebraska and southwest Iowa for a large part of the second week of August.  Daytime highs over much of the area reached the 90s with dew point temperatures often in the 75 to 80 degree range.  This created heat index values that often reached around 105 to 110 degrees and sometimes 115 or hotter.  The highest heat index values during this period were near and south of Omaha toward Falls City and then into extreme southwest Iowa where afternoon values often reached 110 or higher during this stretch.

Excessive Heat in FREMONT, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Excessive Heat in MILLS, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Excessive Heat in HARRISON, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Heat in MONONA, IOWA
From 08-AUG-10 13:00:00 to 08-AUG-10 18:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Highs in the 90s combined with dew point temperatures of 75 to 80 to produce heat index values of around 105 or a little higher much of the afternoon and early evening of Aug. 8th.

Heat in MONONA, IOWA
From 12-AUG-10 12:00:00 to 12-AUG-10 19:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

Highs in the 90s combined with dew point temperatures of 75 to 80 to produce heat index values of around 105 to 110 degrees much of the afternoon and early evening of Aug. 12th.

Excessive Heat in MONTGOMERY, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Excessive Heat in PAGE, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Excessive Heat in SHELBY, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, mostly mid 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 110 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.

Excessive Heat in POTTAWATTAMIE, IOWA
From 08-AUG-10 12:00:00 to 12-AUG-10 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Official NWS Observations

High temperatures reached the 90s, often mid to upper 90s, during the 5 day period of August 8th through the 12th.  When combined with dew point temperatures of 75 to 80 degrees, heat index values reached from around 105 to 115 degrees much of the afternoon and early evening each of these days.  Nighttime lows during this stretch were mostly in the 70s.  At least 8 people sought emergency care due to heat-related illnesses in Council Bluffs area care facilities.