Today we are going to focus on the European weather model and its view on the situation for early next week. There are 3 pieces to this puzzle that are important.
With regards to the Greenland block that is in place. For those of you who don't know about the Greenland Block; when the atmosphere is in normal mode everything moves from west to east. The Greenland Block is the presence of an upper air high pressure system in (you guessed it) Greenland! This disrupts the normal west to east flow and displaces the jet stream far to the south of average for the time of year. During the months from late fall to mid spring, the block creates colder than average conditions across the northeast US and deflects the storm track to the south.
Today's European weather model illustrates the blocking signature very well. The high over Greenland displaces the cold air and jet stream south of normal in the Eastern US. Meanwhile out in the west we see the beginning of a ridge building in the west. This entire look has been nonexistent all winter along and has suddenly appeared now in March...read more at http://www.meteorologistjoecioffi.com/index.php/2017/03/08/european-weather-model-adds-to-puzzle/