Models have now generally caught on to what some would describe as a large amplitude reverse/negative phase of the PNA teleconnection by week-2. I think it is probable this situation may persist the rest of this month per above. As discussed in past postings, particularly weeks 2-4 there should be episodes of significant precipitation along the USA west coast associated with “cold” digging troughs, leading to an active southwest flow storm track across the Plains. Weather ramifications, including high impact blizzard conditions and intense thundersnow in the cold sectors and severe local storms in the warm sectors of synoptic lows, should be understood.
Saturday, December 6, 2008
Let it snow