Following is an initial one-page weather briefing and supporting graphics regarding a coastal storm that has the potential to bring accumulating snowfall to Southern New England Sunday into Monday. 

Winter Storm Watches have been issued for Sunday into Monday for the Berkshires, northern Worcester County and northwest Middlesex Counties. 

As mentioned in a previous e-mail sent this afternoon, mainly snow is expected for the duration in the higher elevations and the greatest potential for highest snow accumulations are currently anticipated here. In the lower elevations and along the coastal plain, due to borderline temperatures and onshore winds, rain may mix in with the snow before changing over to snow as colder air returns southward. Snow accumulations are subject to further adjustment, particularly in the lower elevations due to the two above factors. Given those two sources of uncertainty - we are including the latest official snow forecast but also a reasonable worst-case snow accumulation. This provides an idea of the kind of accumulations we could see if colder air supporting a changeover from rain to snow happens sooner. 

We do expect impacts to travel Sunday into Monday in the higher terrain, and mainly Sunday night and Monday as rain changes over to snow for the lower elevations. Impacts to the Monday commutes are anticipated.