Summer is supposed to be hot. But this season has featured many large-scale North American heat waves that have roasted significant swaths of the country, helping temperatures skyrocket and toppling records.

Another heat wave is set to park over the Lower 48 next week, bringing anomalous summertime heat to parts of the central and eastern United States that may have missed out on previous events.

Early estimates indicate that most of the contiguous United States will see highs running 10 to 15 degrees above average. When combined with climbing humidity, it’ll feel like it’s well into the triple digits for millions. The pattern could also spark severe thunderstorms, perhaps packing strong winds, that could roll through the northern Great Lakes and New England during late July and August.


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