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Nicholas McGrath, 3, of Arizona plays in a fountain in New York, Wednesday, June 20, 2012. The National Weather Service has forecast potentially record-breaking temperatures just as the season officially begins Wednesday, the summer solstice and longest day of the year. (AP Photo/Seth Wenig)

Northeast heat wave

The second day of a heat wave blanketed the U.S. mid-Atlantic and Northeast on Thursday, June 21, sparking power cuts in New York City and forcing utilities across the region to ask customers to conserve electricity.