orangeblood wrote:Wow!! the Northern latitudes of the Northern Hemisphere are cooling off quite dramatically by Week 2. The Expansion of the Stratosphere and subsequent compression of the Tropo caused by the SSW event is really cooling the surface above 45-50 N. Now we sit back and wait for the teleconnections to align to deliver the goods....AO is tanking, still waiting on EPO tank
https://www.tropicaltidbits.com/analysis/models/gfs-ens/2019010506/gfs-ens_T2maMean_nhem_12.png
00z Euro EPS has basically no cold air in NAM at that time frame with the coldest air confined to the Arctic Circle and other side. However, there are signs that the NPAC is starting to retrograde and that higher heights are building into the NAO region. That is getting into the last 1/3 of January. So maybe we should be looking towards the end of Jan or beginning of Feb? It is a bit concerning how stubborn the Pacific jet is, even the control looks like the EPS in the long range. We need that to retract/relax to allow for amplification of the ridge into the EPO region.
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