The images show the upper air at 10 mb pressure level. The red arrow is the boundary between the North and South hemispheres. The green arrow in the south is the direction of the circulation. The upper right is South pole where there is very light winds. The lower left is the north pole where the circulation has changed very little during the month of February. The large CCW center is at 81.2 N / 7.3 W and the small CW circulation on the west coast of NA  is now at 56.4 N / 134.3 W . The pattern has resulted in continuous record breaking cold in the east and above normal temperature in the west. The Caribbean in now getting warmer and continues to be very dry. The trade winds are beginning the get stronger.