Weather models continue to hold fast and firm on an evolving blocking pattern that begins to develop late next week and carrys us through Thanksgiving week and possibly longer. In the meantime the very cold shot of air that is currently right over head will hit bottom tonight and Saturday with record lows before the cold air abates and temperatures begin to moderate. Next week we see 2 weak systems moving through with one on Monday and another late Wednesday or Wednesday night. There will be little in the way of showers and just clouds are expected as those two systems move through. We will see temperatures this week close to or slightly below average before a cold front late in the week could bring clouds and showers Friday. That might be the one day where temperatures might push the upper end of the 50s.
The jet stream pattern that is setting up is completely different from what we have experienced during most of October. The ridge in the east is gone. When you animate the graphic above, watch the area around Greenland as higher pressures builds there. This displaces the jet stream well to the south of normal next weekend and it seems that the pattern locks in at least for the time being. This will mean below to much below normal temperatures for Thanksgiving week..READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/11/10/long-range-blocking-pattern-develops-colder-eastern-us/