Today, we’re likely tracking the start of our next heat wave as highs will stretch to 90° for quite a few locations later this afternoon.  The 90°+ heat then sticks around through Wednesday, along with the humidity peaking on Tuesday and Wednesday. For your Sunday, not only are we tracking the heat, but we’re also tracking the chance for some pop-up thunderstorms this afternoon, between 2pm-6pm.  These will not be widespread, so just be weather aware during any of your…