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And we begin.....


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I know I've seen some talk wondering if Nuri screwed with things some last year. Well, there's a chance we may have a similar situation fairly soon with recurving Typhoon Champi. Pretty much all models are taking the former typhoon below 950 mb, and there are a few that take it below 920 mb. This is still 5-6 days out or so, so it could be something to keep an eye on.

 

I don't think a similar thing occurring on say 10/28 would have the same effect as one occurring on 11/10-11/15 as that did.  In the period from 10/30-12/15 5-10 days is exponential as far as seasonal impact or effect.  The atmosphere is much closer to being locked in or semi getting ready to be locked into a winter pattern on 11/15 than it even is on 11/1.  I still think that the reason last winter largely sucked in the first half was either a La Nina lag in the atmosphere or the active sun during the fall.

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  as of  week 42  OCT 13-19   RUTGERS has snow  for NORTHERN HEMISPHERE =  21.04 milion square KM  and   SIBERIA/  Eurasia at 12.25 million square  KM   ...   similar  to  week 42  in 2012   and  week 42 in  2004

 

 their data goes  back to 1966 =  49 years

  of those   49 years   as of week 42   only  8  years  had  MORE snow in  Both of these areas 

 

 another  9   years at week 42  had   SIMILAR  snowfall amounts  in  the Northern  Hemisphere and  Eurasia 

 

 so in other words as of week 42   in OCT 2015 the snow cover places   18th best out of  49

 


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as of week 42 OCT 13-19 RUTGERS has snow for NORTHERN HEMISPHERE = 21.04 milion square KM and SIBERIA/ Eurasia at 12.25 million square KM ... similar to week 42 in 2012 and week 42 in 2004

their data goes back to 1966 = 49 years

of those 49 years as of week 42 only 8 years had MORE snow in Both of these areas

another 9 years at week 42 had SIMILAR snowfall amounts in the Northern Hemisphere and Eurasia

so in other words as of week 42 in OCT 2015 the snow cover places 18th best out of 49

http://climate.rutgers.edu/snowcover/chart_vis.php?ui_year=2015&ui_week=42&ui_set=0

All of the years that had "similar" snow [cover extent] in [North America] and Siberia/Eurasia actually had more than this year, putting this year at 18th place? Or would this year would be in an approximate 10-way tie for 9th?

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All of the years that had "similar" snow [cover extent] in [North America] and Siberia/Eurasia actually had more than this year, putting this year at 18th place? Or would this year would be in an approximate 10-way tie for 9th?

Sizable uptic in Eurasian snow cover below 60 yesterday would imply were good shape thus far.
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 yes  the   GFS / EURO  do shwo this big  ridge  over  central  SIBERIA in the last few  days of the month   as you can see...

 

 

post-9415-0-21266600-1445891884_thumb.pn

 

 but the MIN MAX TEMPS  do  go above  32 at all  and the snow cover  is  NOT   impacted 

 

 

 

 

post-9415-0-04105600-1445923509_thumb.jp

 

 

 

post-9415-0-28678200-1445923514_thumb.jp

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Update today from AER, fwiw...

 

 

Summary
  • The AO is currently negative and is predicted to trend strongly positive the rest of the week and into early next week and remain positive through mid-November.
  • The strong turn to positive AO conditions is reflective of the model forecast of low pressure/geopotential heights consolidating over the Arctic while high pressure/geopotential heights dominate the mid-latitudes.
  • With strong positive AO conditions and low/geopotential heights entrenched across the Arctic, the weather pattern should be relatively mild across the Northern Hemisphere continents including Northern Europe, the Eastern United States and East Asia.  Below normal temperatures are likely in regions that experience cool temperatures during positive AO regimes, western North America and southwest Asia.
  • Longer term we continue to favor a negative bias to the AO.  Though not as rapid as the past two Octobers, Siberian snow cover has advanced this month at an above normal rate. Arctic sea ice extent remains below normal especially int eh Barents-Kara seas. We continue to anticipate atmospheric blocking, which favors troposphere-stratosphere coupling due to increased energy transfer from the troposphere to the stratosphere (though the current pattern is admittedly not favorable).  All three factors favor a negative winter AO.

https://www.aer.com/science-research/climate-weather/arctic-oscillation

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LOOK AGAIN

 

The high temperature forecast you showed is for November 11th. And the snowcover you're showing is for November 6th.

 

The high temperature forecast you showed is for November 11th. And the snowcover you're showing is for November 6th.

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 according to this  week 43   came in at 14.10 million sq  KM     which is 16th   best  out last  49 years
 ( that  is as far back as the data  goes)  


Right now there is  HUGE  Low over eastern  Siberia   so   OCT 2015  may finish strong unlike last   year when OCT 2014   fell off at the end somewhat 

 

 

 other years  with simialr Numbers at  week 43   are    oct 2010   2006    1995    1970  

 

 

post-9415-0-87135500-1445953638_thumb.pn

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