On March 1, snow cover in the Lower 48 states was at 63.4 percent, according to the analysis. Snow was on the ground .

Since then, snow cover across the country has decreased in a huge way as the animation above illustrates. The NOHRSC analysis on March 12 showed that 14.1 percent of the Lower 48 states was covered by snow. This is the lowest snow cover percentage since Nov. 10.

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The darker blue and purple shadings show the deepest snowpack remaining in New England, the northern Great Lakes and the Rockies. Meanwhile, the lighter shades of blue show areas where snow cover was lighter and prone to melting faster.

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When looking at daily snowcover from March 1-12 in the animation below, you'll see a retreat of the snowpack from March 3-4, followed by an expansion March 5-6 from . After Thor, snow cover was at 50.6 percent across the Lower 48 states on March 6.

Then, rapid melting occurred in the seven days from March 6-12 with snow cover dropping from 50.6 percent to 14.1 percent.

Playing a role in this rapid snowmelt is a weather pattern change, which has allowed milder temperatures to grip the nation's midsection.

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