MU update:
As the Arctic high pressure system moves off to our east and a Clipper-like system tracks across southeastern Canada, more seasonably chilly air will return for Wednesday and Thursday. However, I see signs that the pattern may become increasingly more favorable for potential snow and wintry weather in the East between ~ January 15-25. A bulge northward in the Jet Stream across western North America may occur in conjunction with the return of Greenland blocking. By January 19 or 20, that blocking may very well become centered just to the south and west of Greenland -- a classic "west-based," negative North Atlantic Oscillation (NAO). As I've explained in previous discussions, this Jet Stream configuration is a "snow-lovers dream" and often present leading up to and during major winter storms in the mid-Atlantic. However, here's a word of caution. Even if this pattern does come to fruition, it doesn't guarantee that we'll receive a moderate or major snowstorm. I've seen several instances where snow has failed to occur in this favorable setup. The probability increases, but we're still just talking about a word that nobody has ever shoveled -- "potential."