Overnight System

Our active weather pattern continues as yet another disturbance will be moving through our area later tonight.  Fortunately, the timing of this system will be at night and not in the morning like Monday, thus any travel impacts should be quite low.  Like with Monday's system we aren't expecting a major event on our hands as the system is not rather strong.

We are not really looking at one potent shortwave which will be moving through tonight but multiple pieces of shortwave energy moving through a rather fast flow aloft.  With multiple pieces of weak shortwave energy moving through rather than one consolidated piece of shortwave energy this will reduce the degree of large-scale lift and we will see localized areas of stronger lift.  For this reason we will see light precipitation with brief bursts of moderate to heavy precipitation:

 The big question we are dealing with is actually precipitation type.  Does everyone remain all snow?  Does anyone mix?  This is the biggest question with respect to this little system and the reason is due to questions with regards to the thermal profile through the atmospheric column.  The more likely scenario is for mainly a rain/snow mix outside of western CT.  The NAM bufkit for Waterbury, CT and GFS bufkit both show very questionable thermal profiles indicating the more likelihood is for more mixing, again with the exception being western CT where all precipitation should fall mainly as snow and as much as 1-2'' could fall:

The temperature profile will all depend on how much evaporative cooling occurs at the onset of the precipitation.  Currently there is some dry air in place across the state so initially the precipitation will evaporate before reaching the ground.  This process will help to cool the low-levels of the atmosphere.  If enough occurs to cool the column below freezing than more of the state will see snow.  Regardless, this will be a relatively minor system with only a few locations picking up 1-2'' of snow.

Precipitation should begin between 10:00 and midnight and end during the early morning hours tomorrow.  Morning travel should be fine with the exception of maybe a few click spots.