PNA has been positive since about mid month (start of the much above normal anomalies) and through early Feb looks like it will remain so. Aided by the +EPO has been a torch with DFW nearly +5F to date mostly from this mid month period. As long as the PNA remains positive Florida and the east coast is more likely to be the focus for cold air, Texas being the back edge (or warm if the ridge nudges east from the west). I was not expecting the PNA to remain positive for this long being the Nina background state, that's really been a problem since mid Jan.
Looking at this chart the PNA has been a signal for warm periods this winter. November, late December, and middle to late January were much above normal. The two cold periods, early to mid December and early January coincided with the -PNA

AO remains positive, leaning positive but guidance has been volatile in it's forecast shown by the big spread
