We all laugh at Dr Cohen @CAPE , but I will say this, last year looked better at this point. We had record NA snow cover and a cold period in December. ( even though we experienced the same typical warmth period after Dec. 15 ) I think there is something to be made of a healthy cryosphere and extensive snow cover. So far the AO forecast have been getting uglier and uglier.
It appears that the early seasonal forecast from the euro and even the UK met portraying a weakening of the vortex at the end of November and in early December is not going to pan out.
The vortex remains firmly planted over the North Pole and doesn't even offer any displacement towards North America. It would appear that those calling for a front loaded winter may not get it. It would be ironic if the heart of Winter produces which is not typical of a la Nina.
I have not seen the Control for the GFS or the Euro score a win in many years during the late Fall or Winter when it comes to predicting potential snowfall. Meanwhile, I would be concerned regarding a poor NAM state, and the lack of any posts from HM about the upcoming winter.
Even later December not looking good for winter weather lovers.
The PV is consolidated near the North Pole and there is no sign of a displaced or stretched out PV into North America.
Meanwhile the AO looks to stay positive and there are no solid precurrsors to any significant strat warming.
Things can change but at the moment very boring weather.
Also of note, the potential of a favorable MJO passage later in December, however, the amplitude remains uncertain. Still, something to keep track of in the days ahead.
Seems the last few years the best patterns for us never coincides with our best climo.
Last year when we thought we were going to get nailed by extreme cold and snow ( during the strong blocking episode ) the entire threat area shifted way SW leading to the crippling Texas snow/ice and severe cold outbreak. I believe the block shifted West and we were left with scraps.
Significant changes in concensus moving forward with the AO. Most members take it negative. A great sign moving forward. Also, no sign at the moment that the SPV and the TPV are going to couple.
Also of interest is the robust signal for a very negative NAO moving forward. Could be an active and cold weather period for the East later in the month and in early December.
This might help the back end of winter I believe since there is a delay from ocean to atmosphere. Do you know how long it actually takes to occur, if indeed it focuses more East by early to mid December?
Interesting potential on a - NAO signal out in time. If it happens then the question is, does it retrograde further WSW in a ideal Davis Straight block.
Snow showers in the forecast here for this coming Friday, I had to look twice, thought I was in the wrong zone.
Friday
A chance of snow showers. Sunny, with a high near 49. Chance of precipitation is 30%.
That event produced here and was actually under-forecasted. Given it was mid-November it made the event more remarkable.
I still remember the long traffic delays.