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Click here for tips on how to stay safe in a heat wave.

Severe weather will then move into the Northeast Wednesday afternoon. A severe thunderstorm watch is in effect from western New York to Maine. Wind gusts will post the biggest threat from Albany to Boston to Portland, and isolated large hail and brief tornadoes are possible.

Then the Northeast will get a cool down. By Friday and Saturday temperatures will fall to the mid 80s in Philadelphia and New York, and plunge to the 60s in Boston.

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