Here's what Elliott has to say about the March 7th to 11th time frame:
High-latitude blocking over Greenland, Iceland and northeastern Canada has vanished and won't return for several weeks or more. There may be one more period of "chilly" conditions between March 7-11 before a major warmup during the middle of the month. In fact, we may see a sudden onset of Spring with persistently.. and perhaps well-above.. normal temperatures during the 3rd and/or 4th weeks of the month. Signs point toward the return of a deep trough over western North America and anomalous, upper-level ridge over the eastern half of the continent. Snow-lovers will have to count on the March 7-11 period for one more accumulating snowfall. Thereafter, the odds of measurable snow will likely hit "rock bottom" and essentially be "nil" until next winter. Even in that 5-day window, any snowstorm would probably have to be of the "thread-the-needle" variety and occur at night.