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19 July 2011
The intense upper level high responsible for the heat in the Plains will move eastward later this week, with heat indexes over 115 are very possible in the Washington, DC area. There are some signs that the heat will abate somewhat next week, especially east of the Mississippi, but the Southern Plains will continue to bake. I saw an 80+ dewpoint in North Dakota yesterday- amazing. Minneapolis tied their highest all time dewpoint at 81F (27.2C).