Definitely a nice slug of moisture coming east. There are some differences between the GFS and NAM placement of max QPF. However, both deliver .5"+ to SNH. Precipitation will begin moving in after midnight tonight. There will be a fairly large elevated warm layer that will support liquid precipitation through the mid levels through 3am to 5am. Surface temperatures are between 35 and 40 and will probably be hovering around freezing by 3am. This will be inadequate to support freezing rain, so rain, sleet, and snow will be the primary precipitation types for this storm. The warm layer will be shinking enough as precipitation begins to avoid much longer than an hour or two of rain in the beginning, so should be mainly sleet/snow through 6am, with accumulations around an inch.

Still looks like good snow growth for the morning hours supporting large flakes. This should overcome earlier melting on pavement, and roads will likely begin to get snow covered after 9am. GFS and NAM agree on a fairly large amount of available moisture, however the GFS is further south with the placement of max QPF. This is the difference between 3-5 and 5-9 in Keene. SREF probabilities show good support for 4+" across SNH. I still like my original thoughts of 4-5 lower elevations, 5-7 higher elevations.

--- Snowday Outlook ---
Definitely a tricky forecast. Roads will be slippery by 6am tomorrow, but shouldnt be snow covered yet. By noon, however, travel conditions will be likely be much more hazardous especially on untreated roads. Still, all efforts will probably be made to not have another snowday.