Blocking patterns are actually one of the easiest to forecast for models because they're so stable.
Once models lock on they don't waver much
Storms become easy to pin down as well shortly after. That's how you get weeks of snowy weather and strong consensus
Impressive that the ensembles nailed the blocking though.
However it takes time for the right pieces to fall into place. Too many try to rush the pattern change.
This is the best December pattern I've seen in years. Things will get fun starting 2nd week of December when climo gets really good for everyone.
Don't obsess about every run though. Enjoy the current pleasant weather instead
It took until the end of 2010 before we reaped the benefits of the pattern and then it was smooth sailing for the next month or so.
That's a sick -NAO block. One of these days the record warm waters will line up with a major block and produce a 3'+ snowstorm in the northeast.
Except there's a fairly noticeable SE ridge. Even the strong -NAO can't hold it down completely.
This is a great December pattern if it verifies like that but I'm weary this far out. A lot can go wrong
Nice recent ensemble runs. They're really hitting the Arctic blocking strong. Looks like this week's cutter may initiate a wave break that forces a -NAO/AO.
Still a little too east-based for my liking but not bad. Looks good for SNE & north though.
It's a pattern that could break in any direction. Amount of SE ridging will be key here.
We need to root for 2010 style blocking to overcome the ridging which is a tall order.
This -PNA/NAO/AO pattern would work better in January with colder climo
Yeah the ops are
Euro too. Do yourselves a favor and avoid looking at them for a while.
Though on second glance you can see where the Euro is headed days 9-10
Nice teleconnections today. Falling AO/NAO and even a PNA trying to rise to neutral?
MJO also briefly curling into phase 8 as well.
Looks like after Dec 5 is when things could get interesting.
It comes down to whether we can avoid the extreme RNA pattern of last year + whether the strength of Atlantic blocking could suppress SE ridge enough to allow for snow events.
GEFS going back and forth on strength of blocking. New runs look better
I'm used to a crappy decade of December snows so expectations are extremely low every year. The 2000s are a long memory now.
But it's good to see areas to my north cash in early, build up some snow cover, get that colder air in. It doesn't hurt.