A surge of Arctic air, potentially triggered by a weakening Polar Vortex, is expected to bring the first significant snowstorm of the season to the Interstate 95 corridor this weekend. Forecasters are closely monitoring the interaction between frigid air descending from the Midwest and moisture pushing northward from the southern states. This collision could lead to the formation of a low-pressure system near the coast, resulting in substantial snowfall across major metropolitan areas including Boston, Philadelphia, and New York.