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Portastorm wrote:This year at Thanksgiving, I am thankful for the 18z GFS ...![]()
U think this is going to happen?northjaxpro wrote::uarrow: Yeah, I saw this huge Arctic High dome dropping down in the long long range in analyzing the Deep South Winter Weather Thread.
We will have to see if the teleconnection indicators will align correctly to allow for such an arctic outbreak to intrude into the CONUS, especially down into the nation's heartland south deep into Texas. This is way, way out in fantasy land right now, but we are that time where we sit and wait to see if Old Man Winter will finally come to flex his muscle. We will find out in time I guess.
starsfan65 wrote:U think this is going to happen?northjaxpro wrote::uarrow: Yeah, I saw this huge Arctic High dome dropping down in the long long range in analyzing the Deep South Winter Weather Thread.
We will have to see if the teleconnection indicators will align correctly to allow for such an arctic outbreak to intrude into the CONUS, especially down into the nation's heartland south deep into Texas. This is way, way out in fantasy land right now, but we are that time where we sit and wait to see if Old Man Winter will finally come to flex his muscle. We will find out in time I guess.
i rather have snow than ice.northjaxpro wrote:I want to see what the teleconnections will indicate by this time next week before I can put a best guess percentage to see if an arctic intrusion will occur 14 days out. Too far out for any reasonable forecast on something like this.
But, I would be inclined to think we will see some pattern change to bring a significant cold spell sometime during the first half of December into the CONUS. That is as far as I will say for now.
i feel the ghosts of the 1983 cold snap in me.Ntxw wrote:Ensembles (closer range than weeklies) along with CFSv2 now support a possible fairly significant ridge in the EPO region. Odds continue to increase we will see a massive dome of high pressure emerge from the Aleutians and could make itself known into the Alaskan region. Definitely keep your eyes on it. The ensembles did very well foreseeing the current -AO/-NAO in advance.
The ghosts of the 1983 analog
Is that the maps of December 3rd and 4th I see?starsfan65 wrote:i feel the ghosts of the 1983 cold snap in me.Ntxw wrote:Ensembles (closer range than weeklies) along with CFSv2 now support a possible fairly significant ridge in the EPO region. Odds continue to increase we will see a massive dome of high pressure emerge from the Aleutians and could make itself known into the Alaskan region. Definitely keep your eyes on it. The ensembles did very well foreseeing the current -AO/-NAO in advance.
The ghosts of the 1983 analog
We have 8 days left before December to enjoy this mild weather.starsfan65 wrote:Is that the maps of December 3rd and 4th I see?starsfan65 wrote:i feel the ghosts of the 1983 cold snap in me.Ntxw wrote:Ensembles (closer range than weeklies) along with CFSv2 now support a possible fairly significant ridge in the EPO region. Odds continue to increase we will see a massive dome of high pressure emerge from the Aleutians and could make itself known into the Alaskan region. Definitely keep your eyes on it. The ensembles did very well foreseeing the current -AO/-NAO in advance.
The ghosts of the 1983 analog
starsfan65 wrote:Is that the maps of December 3rd and 4th I see?starsfan65 wrote:i feel the ghosts of the 1983 cold snap in me.Ntxw wrote:Ensembles (closer range than weeklies) along with CFSv2 now support a possible fairly significant ridge in the EPO region. Odds continue to increase we will see a massive dome of high pressure emerge from the Aleutians and could make itself known into the Alaskan region. Definitely keep your eyes on it. The ensembles did very well foreseeing the current -AO/-NAO in advance.
The ghosts of the 1983 analog
Ntxw wrote:starsfan65 wrote:Is that the maps of December 3rd and 4th I see?starsfan65 wrote:i feel the ghosts of the 1983 cold snap in me.
It is, but it is not the period in which any Siberian air mass, if there is, could be unleashed. I was merely pointing out that the Pacific was at that period beginning to cluster from the ensembles of the NPAC being unfavorable to really favorable for delivering outbreaks.
Ntxw wrote:starsfan65 wrote:Is that the maps of December 3rd and 4th I see?starsfan65 wrote:i feel the ghosts of the 1983 cold snap in me.
It is, but it is not the period in which any Siberian air mass, if there is, could be unleashed. I was merely pointing out that the Pacific was at that period beginning to cluster from the ensembles of the NPAC being unfavorable to really favorable for delivering outbreaks.
Golf7070 wrote:Ntxw wrote:starsfan65 wrote:Is that the maps of December 3rd and 4th I see?
It is, but it is not the period in which any Siberian air mass, if there is, could be unleashed. I was merely pointing out that the Pacific was at that period beginning to cluster from the ensembles of the NPAC being unfavorable to really favorable for delivering outbreaks.
Ntwx, Allan huffman mentioned that euro ensembles are showing cross polar flow day 13+ but it way out there. He thinks true Siberian air possible. Do you agree or is the warm pool not strong enough to allow that to happen or what do u think will happen?
We are waiting to see how Pacific will respond.Ntxw wrote:Golf7070 wrote:Ntxw wrote:
It is, but it is not the period in which any Siberian air mass, if there is, could be unleashed. I was merely pointing out that the Pacific was at that period beginning to cluster from the ensembles of the NPAC being unfavorable to really favorable for delivering outbreaks.
Ntwx, Allan huffman mentioned that euro ensembles are showing cross polar flow day 13+ but it way out there. He thinks true Siberian air possible. Do you agree or is the warm pool not strong enough to allow that to happen or what do u think will happen?
The Aleutian ridge is a sure bet. The atmosphere is finally responding to the very weak NIna. Western Canada is going to get cold along with Alaska as the flow gets cut off from the Pacific by the Aleutian ridge. Flow then is directed from Siberia. Remember the past 24 months the Aleutian low has dominated and cut North America off. The big question is will the ridge continue to progress and direct the cold air down to the US, that's more difficult to say. With the Northeast Canadian(hudson bay) block well in place, if we can get the Pacific to help us, we can get it cold and keep it cold.
starsfan65 wrote:We are waiting to see how Pacific will respond.
what is the EPO stands now?Ntxw wrote:starsfan65 wrote:We are waiting to see how Pacific will respond.
Yeah, as always the EPO (Pacific) is the cold loading pattern for North America. Without it, there is just no true cold air no matter how good the AO, NAO, or PNA is.
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