Overnight last night into early this morning a arctic cold front came through the area, it has marked the beginning of what will be a prolonged period of well below average temperatures and really more or less the return of the same pattern we’ve seen dominate this winter!
Today will be the warmest of the next 7 days with high temperatures steady in the upper 20s to mid 30s, there could be some scattered flurries this afternoon especially up towards NE PA , with gusty NW winds 10-20 with gusts to 30-35 mph.
Tonight temperatures will rapidly drop into the 10s to low 20s with wind chills in the 0s and 10s
What we went through this past weekend with the warmth was a pattern reload and now the pattern is progressing back to a very wintry pattern for the eastern 2/3rds of the nation
With a recent stratospheric warming event a piece of the Polar Vortex is dropping into southeast Canada, and with the MJO heading towards phases 7-8-1 we are seeing redevelopment of a ridge in the east Pacific and west coast , with a trough developing downstream in the east helping to bring down ample cold air from the North and west
One change from the original pattern to this one, at least for this week is that it will be mostly dry as the Polar and Subtropical jets stay separate due to suppression from the Polar Vortex coming too far south, there’s a light snow event possible Wednesday morning but will overall be dry though the weekend.
Tuesday will feature highs in the lower 20s interior to low 30s along the coast, some scattered light snow showers will be possible especially south but a mostly dry day is expected with lows tomorrow night in the 10s to low 20s
Late Tuesday night into Wednesday morning as a weak clipper passes south light snow/snow showers are likely with generally a coating -2 inches expected, as of now the heaviest snow is more likely along the coast as the clipper try’s to develop more off shore.
We will clear out Wednesday afternoon and the true arctic air will move in Wednesday through Saturday with highs in the upper 10s to mid 20s and lows in the 0s to low 10s, coldest readings over NE PA/ NW NJ.
As we head into the weekend the storm chances will likely start to arise again as the MJO goes deep into phase 8 with a active sub tropical jet stream , first of which storm could bring modest snow Saturday night into Sunday then better potential for significant storm systems heading into next week as the Polar vortex retreats just enough to allow for more interaction of the Polar and Sub tropical jet streams yet stays far enough south to continue to inject very cold air into the region, there is a lot of potential setting up from Sunday through next week for snow lovers but as time goes on we will track these potentials to see just how the disturbances interact etc. More details as the week wares on