During 2012, the persistence of mean ridging over our part of the world has been quite remarkable. The images below show a series of 90-day 500-mb height anomalies (i.e., departures from climatology) going back to the beginning of the year. The warm colors indicate positive height anomalies and are indicative of ridging. Although the pattern has shifted around somewhat, Utah has been under the influence of what meteorologists call a "time-mean ridge" for the entire year.
Note: This is not a forecast of a bad ski season, but merely discussion of the fact that we have had a ridge-dominated pattern for some time and we need that to change.