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Bob Oravec reports a massive heat dome is trapping extreme temperatures across the central and southern United States.

A massive heat dome is currently trapping extreme temperatures across the central and southern United States, with at least 40 million people under extreme heat warnings. The phenomenon is causing heat indexes well above 100 degrees Fahrenheit from Minnesota down to Mississippi and west into southern California and Nevada. Parts of the Southwest are expected to see highs of 120 degrees Fahrenheit. Bob Oravec, a meteorologist with the National Weather Service, noted that the core of the heat sinks southward by early next week. While temporary relief may arrive toward the middle of the week, high temperatures are expected to persist in the South and Southwest. The sweltering weather is being exacerbated by high humidity, making the

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