Saturday, December 1, 2012

*Revised* Onto December..Up & Down, whats ahead ?...

As we close the door on a very dry , below normal temperature wise November,  ( November SNE data ) we now have opened the door to a somewhat wintery start to Meteorological Winter and December. Many locations across Southern New England this morning were greeted to light snowfall and widespread coatings across the region along with unseasonably cold temperatures. Almost like a script right ? Well it certainly will not last long as winds will shift overnight and into Sunday from the south and slightly southwest with high pressure settling further to the south and push a warm front north into and through the region and bring us well above normal for this time of the year in the 50°’s !  That should last until early Wednesday before a strong cold front will bring couple downpours or even a rumble of thunder with a uick switch to snow on backside central and western SNE Wednesday afternoon and much cooler weather back where we should be this time of year to follow.

  Signs are "back" (a bit delayed) that upstream blocking near Greenland  could again try to re-establish itself along with a disintegrating massive low over the Gulf of Alaska finally leaving that area and a Polar Vortex over central Canada that has been stubborn to budge, finally start to make the track South/Southeastward towards the lower 48. All this potentially indicates a cooler and stormier pattern setting up in the mid-term and especially after December 9th time frame . One of our reliable models indicates a Nor’easter around that time with interior snow, a coastal mix and strong winds. This is something we will watch over the coming days and bring further updates as needed. A combination of that model and another long range model indicate the storminess may not stop there as blocking tries establishes often in the upper 500mb pattern and a recent dominating Northern Branch Jet Stream begins to shift southwards and allows for phasing with the Southern Jet Stream which has lacked so far with cooler air in place though has occurred back in late Oct and Nov with Sandy and the Nor'easter respectively. This increases large storm potential greatly for  The Mid-Atlantic and Northeast. Its still has to come together though as it has potential to do so with key factors en route perhaps, but certainly not a given. It will be something to monitor and can be nothing but better news ahead for Winter lovers.

 So Enjoy the mild air and break next few days and for the  winter /snow lovers, time to get down and dirty.  Thanks for reading.     ~Anthony

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