TX to New England: Sister City Warmth

I've been up late and getting up early this week, between monitoring the Tropical Storm, my normal work routine, and getting the daughter to school and camp. So maybe it was my lack of sleep that caused me to kind of, well, freeze up and spontaneously reboot when trying to figure this graphic out:

Finally, I realized that what the map is showing (and this is ingenious and took some work from our staff) is that this weekend's extreme heat in the Northeast will match the temperatures in the South Central U.S. yesterday (which were not abnormal, including some towns of the same name.

Will temperatures this weekend break records once again, like they were during the last major heat wave on Memorial Day? If our forecast holds, a few places might but most will probably be just shy of them. Here are the records that could be broken in the major cities (just for fun I'll put the government's forecast in parentheses):

Boston, Massachusetts: 92 (93) on Sunday, Record 94 (possible)
Baltimore, Maryland: 92 (93) on Sunday, Record 97 (not likely)
Philadelphia, Pennsylvania: 92 (94) on Sunday, Record 96 (not likely)
Washington, DC: 93 (92) on Sunday, Record 98 (not likely)
New York City, New York: 92 (92) on Sunday, Record 95 (not likely)