A high pressure system, dubbed a “heat dome,” will bake much of the Heartland through the weekend, leaving farmers and ranchers scrambling to keep their animals cool.
According to The Washington Post, the system will bring heat indexes that surpass 110 degrees in some places, marking the hottest temperatures seen in the region so far this year. These are not expected to be "record-setting" temperatures, however.
“We’re not talking record-breaking heat by any stretch,” said Andrew Krein, a meteorologist with the National Weather Service’s Chicago-area office. “It is the warmest it’s been this summer, so in that respect people may not be prepared for it.”
The main culprit of the sudden increase in humidity is moisture from the Gulf of Mexico, but Krein suggests maturing corn crops are also to blame.
“Corn is a very effective transporter of moisture from the ground into the atmosphere,” he said.
For livestock producers, here are additional links that may be of assistance in managing heat and heat stress with these animals:
Though the “heat dome” and its effects may eventually loosen its grip on the central states, Julianne Johnston with Pro Farmer points out that above-normal temperatures are expected to continue across the contiguous U.S. through October.