I really like this guy and his discussions... He's been pretty spot on this far...
NEWA Discussion – Stratospheric Zonal Wind Reversal Possible Before Thanksgiving
According to the latest ECMWF ensemble 0z mean, the stratosphere may be gearing up for a zonal wind reversal just before Thanksgiving — something that hasn’t occurred this early in the season since the late 1960s.
A stratospheric zonal wind reversal happens when the polar stratospheric winds — which typically blow west to east (westerly) during winter — suddenly shift to an easterly flow. This shift is often the direct result of a Sudden Stratospheric Warming (SSW) event and can have major downstream effects on our weather across North America and the North Atlantic for a long period of time.
Once the stratosphere and troposphere couple, the result can be a disrupted polar vortex, opening the door to prolonged cold spells across the U.S. and Europe, or in some cases, unusual warmth in select regions depending on how the pattern sets up.
If this potential reversal verifies, it would mark the first November event of its kind in over half a century — and could have major implications for early winter pattern development across the Northeast and Mid-Atlantic.
Stay tuned to the Dashboard as I will be tracking the stratospheric trends closely as we head into the Thanksgiving period, and keep you updated..this is going to be fun I promise.