Last night's weather model runs layed out 2 very distinct and opposite paths regarding the weather pattern for later this week complete with storm track implications for the East Coast. By now everyone knows about what the European model did with regards to developing a significant East Coast storm for next Sunday into Monday and by now everyone knows that the GFS did the exact opposite as it retains the general overall pattern we are in with little change. The video above illustrates in detail what last night's model runs did and the factors in play. Today's runs illustrate very well the issue and the two big questions at hand. The first is the blocking signature in the North Atlantic and the strength of that block which both models have. The second and more important key is in the west and the persistent unusually deep trough that has dominated the weather scene for much of the winter with only brief interruptions.
I have seen model differences over the years and some of them have been rather extreme but the differences last night were astounding between the two weather models. Positioning of the blocks are different. More importantly is the HUGE difference...READ MORE AT http://www.meteorologistjoecioffi.com/index.php/2017/03/04/weather-models-blocking-troughing-battle-continues/