“Without a doubt, it’s unprecedented”: Dangerous western heat wave explained

“Without a doubt, it’s unprecedented”: Dangerous western heat wave explained – CBS News<!– –>

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The heat wave in the West has shifted slightly, bringing record-breaking temperatures to Montana and Idaho. CBS’s Lilia Luciano reports from Seattle and CBS News meteorologist and climate specialist Jeff Berardelli joins CBSN to explain how this “unprecedented” heat wave happened.

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