Kylo
Member
I picked it first lol.lmao I was going to create a November thread with the exact same title !
Yeah for the fact that you want continued wave-1 forcing to disturb the polar vortex early on, it's usually good to keep the Aleutian Low strong, granted there are other ways to do this but at least we have a Scandinavian ridge for the foreseeable future ensuring that the PV doesn't become exceptionally strong even if the Aleutian Low falters for a while.
Something to look/hope for as we get deeper into November is to monitor the amplitude of the Scandinavian ridge. If the Scandinavian high were to amplify, it would eventually begin to retrograde westward and become a negative NAO late in November. Large, retrogressive Scandinavian ridges are actually the main pathway thru which we get long-lasting & strong negative NAOs, anticyclones "breaking" poleward from the south into Greenland & Iceland rarely work out in our favor in the long run.
I'm going to piggy back off of this post in the 2018-19 winter thread. Not surprisingly, we're starting to see some ECMWF forecasts w/ a -NAO as we encroach on mid-November. In light of the aforementioned post and the fact we have a belt of anomalous easterly momentum (in green) near 45-50N, this favors high-latitude blocking in general and only lends more legitimacy to the idea that we might finally get a decent -NAO sometime in/around the 2nd-3rd week of November, knocking on the door of our winter wx climo in the Carolinas.
We've seen snow in the 2nd week of November as recently as 2013 in central NC.
Yes that is no coincidence, that pattern configuration late in the fall if it persists, increases wave driving on the polar vortex leading to disruption and weakening later on that’s manifest as blocking over Greenland where the primary pole of the AO is locatedI suppose it's not a coincidence to see that back in the 60's when -NAO was more prevalent it was preceded in October/November by a Scandinavian ridge and NP low?
View attachment 7109
View attachment 7111
That 2000 event was a nice over performer/surprise. If I remember correctly forecast was for mainly rain or snow to rain and it snowed most of the day with a good period of heavy marshmallows. Was almost all melted by the next morning as temps hung around 33-34Here are the 3 biggest winter storms in mid-November east of the mountains that I've come across in the historical record. I'd gladly take any of these...
View attachment 7106
View attachment 7107
View attachment 7108
That 2000 event was a nice over performer/surprise. If I remember correctly forecast was for mainly rain or snow to rain and it snowed most of the day with a good period of heavy marshmallows. Was almost all melted by the next morning as temps hung around 33-34
Sent from my SM-G955U using Tapatalk
I was in my work truck right smack dab in the middle of it! I thought I was a goner. I had no idea the size or intensity of it at the time. Very scary feelingView attachment 7114 View attachment 7115 Jimmy, remember this?? It was truly a November nuisance!
Here is a snippet from this mornings update from B'ham.I am hearing talk of a possible severe weather event next week. Not sure of its impacts on the south.
Starting to see some nice cold shots on the long range guidance. Noise for now , but it just proves we are close to the best time of year
Sent from my iPhone using Tapatalk