Friday, December 30, 2016
Blocking Pattern Brings Back the Chill
Highs Wednesday and beyond will remain in the upper teens and low 20's with overnight lows falling into the single digits at times. So what's with the sudden change? It's a blocking pattern over Greenland - known as the Greenland Block. High pressure develops over Greenland forcing the jet stream northward. That northward shift dislodges cold air from the Arctic causing it to spill south over the lower 48. And this will be quite a southward extent of the cold air as it moves all way into north Texas and Gulf states.
Highs next week will run 10 to 15 degrees below average and actually look to remain below average through the first half of January. For all you snow lovers out there wondering if the cold will bring the snow with it - doesn't look too likely. We may have a few smaller systems roll through, but no major snow makers on the horizon just yet.