One healthy band of snow managed to rotate through the Mad River Valley on Friday and intermittent light snow will accompany the gradual descent of temperature readings along with the strong winds through Saturday. Total snow accumulations will be enhanced by the unfrozen state of Lake Champlain and although the big storm and heavy snow won't materialize, a cold 3-6 wind blown inches will provide some powdery turns. The intermittent snow will taper off and give way to some clearing Saturday night and sunshine should then make a partial appearance on Sunday. The big story is the cold obvoiusly. Temperatures will be near 10 while the snow is falling on Saturday and will be accompanied by 30 mph wind gusts, which could be higher at the summits. Actual temperatures Sunday are expected to stagnate in the single numbers with a continuation of near 30 mph wind gusts in spite of sunshine. Please dress accordingly.
Winds will taper off late Sunday and clear skies along with the snow cover will provide the support for subzero temperatures Monday morning. We still expect a bluebird day Monday or at least most of Monday with calm winds and readings climbing into the teens.
We are still expecting a surge in the EPO index around the Christmas holiday forcing arctic air to make a northward retreat. As mentioned in the last update, New England and Vermont in particular seem well positioned for a very slow moderation in temperatures throughout the holiday week. Additionally, a disturbance riding along the slowly eastward moving warmer temperatures will be the catalyst for a period of light snow Monday night into Christmas Eve. We appear to be in line for a few inches though we should expect some final alterations in these expectations over the coming days. Sunshine could make a nice appearance on Christmas Day and on the 26th. After that, an extended period of cloudiness which often accompanies a gradual push toward milder temperatures. Overall, none of these milder temperatures appear to be too much of a problem through the 27th with overnight readings remaining below freezing and daytime temperatures climbing beyond the freezing mark for a few hours late in the week. Moreover, Christmas week will feature no rain or mixed precipitation.
A massive blob of anomalous warmth across eastern Canada stands out like a sore thumb on the ensemble maps for the last full weekend of the 2024. In spite of this, there appears to be a way through this calamity and into 2025 which is starting to look very interesting, mostly because of potential storminess and more supportive temperatures. The days leading up to New Year's Day are the most challenging however since no fresh supply of cold exists within thousands of miles of us. A way through is contingent on the low sun angle of late December, minimal ambient flow that is not south or southwesterly and somehow avoiding potential rainfall. The operational simulations are going to be noisy out this far but it's encouraging that a few of them have indicated this possibility. Other simulations have shown some potential rainfall. The turn to colder weather and a higher probability of snow would then arrive on or before the first full weekend of 2025.
