A Messy Solution Likely Thursday
There are two main ways to lock cold air into Southern New England before a big snowstorm. Neither will be present on Thursday but a decent snowstorm is on the way for interior Southern New England/Northern New England. Low pressure will track over the Canal allowing a surge of warm air to move into Eastern MA/RI/CT. The inland track will change these regions to rain. The low will deepen rapidly as it swings into the Gulf of Maine. Temperatures will drop sharply as this happens and a brief burst of heavy snow is likely in interior Eastern MA, South Central MA and Northern CT. The deep pressure drop will also bring strong winds to Southeastern New England.
If you notice the Thursday 7 PM surface chart in the headline graphic above note there is no high pressure in Southern Canada. It is neither present in banana form (or Midwest Extension) as it was on December 26, 2010
|WPC Surface Analysis December 26, 2010 7 PM|
|WPC Surface Analysis January 27, 2015 1 AM|
On Thursday AM the initially weak surface low makes it way towards the Mid Atlantic coast. High pressure is in the picture for the time being but it will continue to move east on Thursday.
|WPC Surface Fronts/Precipitation Thursday 7 AM|
A mix of snow and rain will move into Southern New England Thursday between 10AM- Noon. Expect steady snow in Southern NH, VT, and Western MA by this time. Rain will be steady in Southwestern CT and on the move east.
|18z NAM hires simulated radar Thursday 1 PM (image Weatherbell)|
|18z NAM hires simulated radar Thursday 4 PM (image Weatherbell)|
|18z NAM hires simulated radar Thursday 7 PM (image Weatherbell)|
|NWS Headlines Tuesday December 27, 2016|
|NWS Most Likely Snowfall|