12Z GFS is an Old Fashioned "Call the Patriot News/Post-Gazette/Philly Inquirer and warn the commoners about heat" heat wave. Its not as intense as some runs but its relentless especially for the LSV and South/East. Would have to do some checking but may run the risk of setting a record for most days in a row above 90 at MDT. Think we have had this discussion before. 10 of 11 days above 90. CMC focuses much of the heat farther West and not nearly "as bad" but still hot. GFS does throw out this fantasy relief. 12Z Euro questions whether anyone except S/E PA even sees a heatwave. Not nearly as hot as it has a minor trough affecting the area late next week.