A shortwave with very little associated moisture will approach the region this afternoon. Mid level clouds have already pushed into the area, and will be in place through tonight. A dry airmass currently in tact across New England will make it difficult for precipitation to reach the ground, and a few hours of virga is likely. Dew points will slowly rise, so scattered snow showers will start to reach the ground. Could see a dusting of accumulation to perhaps a half inch in a couple heavier snow showers.
Sunday Night - Another shortwave trough will spread clouds into the region during the day Sunday. Again, dry air will keep precipitation from reaching the ground through Sunday afternoon, although some light precipitation could start in the evening hours over western New England. Southwest flow will push warm air advection into the region, raising 850mb temperatures above freezing. Surface temperatures will rise to above freezing south of the Mass Pike, however snow cover and antecedent cold will mean liquid precipitation could still freeze on contact. North of the pike, surface temperatures will hold at or below freezing, with a temperature profile supporting sleet and freezing rain through midnight. All precipitation should change to snow after midnight in Keene, with a wintry mix continuing south of the pike, before ending Monday morning. Precipitation is expected to be light with only between .1 and .2" of water equivalent, and even that is still in question due to dry air issues. Right now it looks like this will translate to around a half inch of snow, and a light glaze of icing possible underneath. Regardless of light accumulations, this would make the Monday morning commute hazardous, and a delay may be necessary Monday morning.
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