Very weak tropospheric polar vortex brings up cyclonic heat

~Smaller, weaker elongated Arctic Polar Vortex
~Coldest Vortices weakest compared to last 4 years

Based on CMC January 25 0000 UTC 700 mb data measurements,  because it is closest to 600 mb,  the actual average temperature of the entire troposphere,  along with below 500 mb height,   implicating lower atmospheric circulations.     We see two important Cyclones typically going Northeastwards,  the furtherest North one is following a " northern warming" path,  heavily influencing the temperature of the Arctic Ocean.  The elongated aspect of the North American vortex is a sign of winter weakness, readily identified by its temperatures, once called  by weather TV presenters the "Polar  Vortex"

was really a vortice(s) within the Polar Vortex having temperatures well below -30 C forming at a Southward location.  As we can see here ,  none to be found in North America but for a faint one North of Alaska,  which has finally got a bit colder.

   The current North Pacific situation is very interesting,  absent a Greenlandic barrier,  a significant Cyclone crashes Westwards right into the coldest vortice,  yesterday North Japan had 700 mb temperatures -33 C,   these numbers warm substantially at present as the Siberian coldest atmosphere will relinquish this ranking to Northern Canada's CAA very soon (**Mongolia and North central China was equally very cold,  but outside the range of multi year study with same map grid).    This has been mid-winter  2017-18 outlook,  an oscillation between coldest atmospheres between NE Siberia and Canadian Central Arctic Archipelago , one cools while the other warms.  Looking back to 2014,  there has not been a warmer atmosphere than now.  A key describer is the lack of -30 C vortices within the Arctic Polar Vortex.  This will likely continue and result in again record warm temperatures for the Arctic,  despite strong El-Nino just past. 

**Mongolia and high elevated regions ( about 1 kilometers or more ASL)  have incomparable pressure temperatures,   while I aim to read at 600 mb level,  but only do 700 because there is not many 600 mb charts produced,  the Equivalent Mongolian pressure level to 600 mb is 450 mb,  because at that pressure height lies close to  the average temperature of this thinner troposphere.  It is best to stick to charts from Polar stations lower than about 600 meters altitude.  Jan 30 **

WD January 25-26 (second map changed on 26) 2018