Oppressive temperatures in the mid 90's to around 100 degrees along with dew point readings in the mid to upper 70's produced very dangerous heat conditions with heat index readings in excess of 105 degrees for much of the afternoon and early evening.
Numerous roads across the region buckled from the heat.
Some of the more extreme heat index readings experienced during the afternoon included 113 degrees at Wagner, 112 degrees at Le Mars, Canton and Mitchell, 111 degrees at Cherokee, Sioux City, Huron and Yankton, and 110 degrees at Sioux Falls, Colton and White Lake.

Excessive Heat in YANKTON, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in CLAY, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Heat in GREGORY, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Heat in BROOKINGS, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in BEADLE, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Excessive Heat in KINGSBURY, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in JERAULD, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in SANBORN, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in MINER, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in LAKE, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in MOODY, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in BRULE, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in AURORA, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in DAVISON, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: ASOS

Excessive Heat in HANSON, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in MCCOOK, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in CHARLES MIX, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in MINNEHAHA, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Crop damage: 0.00K
Reported by: ASOS

Excessive Heat in LINCOLN, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Crop damage: 0.00K
Reported by: AWOS

Excessive Heat in UNION, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in DOUGLAS, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in HUTCHINSON, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in TURNER, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Mesonet

Excessive Heat in BON HOMME, SOUTH DAKOTA
From 29-JUN-19 12:00:00 to 29-JUN-19 20:00:00 (CST-6)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: AWOS