Tonight will be a good test of the weather models.  Both the GFS and the NAM are showing the precipitation associated with an artic front to dissipate before reaching Philadelphia.  The GFS cranks out a snow flurry around daybreak with a QPF of 0.01 inches water.

On Sunday, another weather forecasting dilemma presents itself as a stalled front in our area will allow disturbances to develop and move along the front.  It’s impossible to know where the front will end up, but recent similar scenarios have the front stalling further south than model predictions.  As a result, light snow is seeming more possible than light rain or sleet in PHL.   A stronger low pressure system may develop along this front Monday, bringing snow.   Amounts not predictable at this time.   Stay tuned.