AfewUniversesBelowNormal Posted October 2, 2017 Share Posted October 2, 2017 pretty cool. I've rarely seen this pattern modeled before (warm-cold color variation, intensity, location) since watching models 2002. Link to comment Share on other sites More sharing options...
nzucker Posted October 2, 2017 Share Posted October 2, 2017 Typical double block pattern with a large vortex over the Baffin Island area...I think we've seen a few examples of this pattern, though the vortex wasn't that tight. Jan-Mar 2014 had a pretty active PV over North America...93-94 had a large Hudson Bay vortex with ridging over the Pacific. A similar double block pattern was also modeled during January of last year, and led to the brief burst of cold coinciding with the early February storm. I think the low heights tend to press farther south in winter, so the anomalies aren't quite as intense or close together. I'd think this pattern could suit us well in winter if the PV was located in Hudson Bay instead of Baffin Is. Still looks like the main cold is remaining in Siberia. That's my worry. We've seen the PV just sit over Eurasia so much the last couple winters. Link to comment Share on other sites More sharing options...
AfewUniversesBelowNormal Posted October 2, 2017 Author Share Posted October 2, 2017 More likely to happen in the Autumn. I think it signs an early crisp, clear, cold late Fall pattern. The area is a strong hold at this time of the year, meaning, it's unlikely to quickly switch back and forth between + and -. Link to comment Share on other sites More sharing options...
AfewUniversesBelowNormal Posted October 3, 2017 Author Share Posted October 3, 2017 This is what happens in the Fall These are good signs for a cold Winter, I think Link to comment Share on other sites More sharing options...
AfewUniversesBelowNormal Posted October 4, 2017 Author Share Posted October 4, 2017 Nice event happening now. a 100dm difference at 500mb in 3000 miles, (20% of 0-high 2 weeks from Summer) Link to comment Share on other sites More sharing options...
AfewUniversesBelowNormal Posted October 4, 2017 Author Share Posted October 4, 2017 The persistence I mentioned at this time of year. Link to comment Share on other sites More sharing options...
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